2023 LTZ LZ0 86,000+ mi, I regen every 200-300 miles. Drive long trips 2-5 hours long every day. 5-6 short trips during sales calls. I get longer distance between regents when I use BP diesel. I also use Hotshots Extreme every fill up.
2023 AT4 with just under 8000 miles, all stock. I run hot shots edt. I have monitored regens with an idash and they have always been between 120 - 190 miles.
My 23 At4 just had its 7500 service. Regens have been very frequent (121-143 miles) recently. My dealer sells ALOT of 3.0’s. The diesel service manager said they should get 400-500 per regen. Since I was only scheduled for the 7500 service I would need to schedule for the regen issue. The manager suspected it is caused by a particulate filter sensor or faulty fuel injector. We were in the area for a trip (7hrs from home) that’s why we had Laura GMC do the service. I have a appt with my local dealer on the 20th to look into the issue.
Picked up the truck from the dealer. They had no clue, contacted GM and their techs are working on it. They said they will contact me next week with an update from GM. It can’t be that hard to figure out. If the LM2’s are not having the issues only the LZO, look at the changes and reverse engineer it.
If you have a tuner turned up to a higher level like the banks tuner and you dog on it, your regents will be way more frequent. Turn the tuner to STOCK and I’d bet your problem goes away. This also includes the pedal monster being turned up as well.
2024 Sierra 1500 LZ0, 2750 on the ODO. Banks I dash (beta), Smart Stop/Start, stock otherwise. Changed oil and filter @2200 miles, now running the PPE filter and amsoil 0W20, will probably go back to Mob 1 next oil change. Running on road fuel from a 500 gallon tank, 2 oz of hot shots EDT every fill up (usually less than a 1/4 tank on fill up). Sitting at 49% on DEF per I Dash(truck was full of DEF when it left the lot with 4 miles on the clock). Been running the I Dash since ~450 miles, Longest between regens has been 246 and shortest 184, Typically completes a regen within 12 miles. I have noticed here lately that it will go all the way down to zero on soot load, however, it will pop back up pretty quickly and before you know it will be at 50%. Regen typically shuts off ~30% SL. So I'd say I'm running ~200 miles average on Regen
ugh, I don't like that 200 mile average either. Thanks for sharing ! I want my 400+ back :-) My regen does typically go back to 0-5% after regen as well.
2023 LZ0. Factory air box, PPE elbow, S&B intake pipe. Hot shots EDT every tank. Regens about every 150-200 miles. Complete in about 15 miles. Mainly driving short trips less than 30 miles. Many trips just a handful of miles.
I have a 24 Silverado since end of September, I have 11200 moles on it. I get 150-250 miles on mixed use, 300-400 highway use and 500-600 towing since new. I use amsoil all in one during the winter and injector clean and cetane boost during the summer. It seams to be determined by how hot the egt/2 numbers are, if they are around 500-600* during in town and 600-700 on highway and 800-900 towing. My numbers have been consistent.
Just noticed that mine regens more often as well, typically 150-200 miles. Before I was averaging 350-450 miles. Happened about 3-4 weeks ago. Same MPGs though. 2021 AT4
2023 Trail boss, LZ0. 19k miles on my truck. Zero modifications, bone stock just an I dash gauge. Just started noticing the same exact thing on my truck. Just as recently as couple weeks ago used to get 300-350 miles before a regen. Now my soot level on idash loads up super fast, regens every 100-150 miles now. However like you said, the regens are fast (10-15 mins). Weird. Wonder if GM did an update or this is just normal cycle for the Lz0. I miss my LM2 used to get 6000 miles out of a def tank!
I've been around 150 to 250, The 250 was from a long road trip and the 150 is usually around town. I'm running the PPE Charger, intake pipe and drop in AEF Dry filter. Also running the VSE Fuel filter and waiting on the catch can.
I'd like add a comment regarding buying a gas V8 vs the LZ0 diesel. . . I currently own 2023 Silverado 1500 with the 3.0l LZ0 diesel with about 7,500 miles. My previous truck was a 2016 RAM 1500 with the 5.7L gas V8, (owed new, driven to 62,000 miles). Driving routes & habits are essential the some on both trucks (i.e. same routes & loads). The 2023 LZ0 diesel averaged 22-25 city and 24-32 hwy. The 2016 RAM V8 gas averaged 14-17 city and 18- 23 hwy. Both trucks was (and is) had minor software updates and was relatively trouble free. I've used 1.3 tanks of DEF in 7,500 miles and have not paid much attention to DPF regen., (Chevy engineers made this a none factor for me). Changed engine oil at 730mi, 4,025mi & 7,054mi (due to new engine). Never more then half-quart low at oil change. I'm completely stock on both trucks and carry loads occasionally, i prefer the LZ0 diesel.
2023 LT stock, 19000 miles, I have noticed more regens than before as well, I think I had 3 regens in one tank full as well, I don't have a banks, but I can tell from the smell and higher idle.
2024 LZ0 stock. average 180-200 mostly mixed driving 20 miles or less. last regen was about 150 miles. usually lasts about 8 miles on city streets off highway. MPG is about 25 every fill-up. def usage is about a gallon per thousand miles without towing. i use costco top-tier diesel everytime. i am gonna used hotshot's edt for the next few tanks. My first 2 tanks of fuel, regens were about 75 - 90 miles between. my longest time was about 350 miles in the winter using ac delco cold fuel addititve.
I have a 2024 Sierra AT4 LZO with 2,500 miles and my regens have been happening every 100 to 150 miles since I bought it new in February of this year. I usually have 3 regens per tank as well. I started using Archoil fuel additive recently and have noticed my regens finish in 10 minutes or less now. I’m not sure if it’s the Archoil additive making the regens quicker or something else. Thanks for all the great info you provide!
I noticed My 21 3500 doing a weird thing where before completing a long highway drive and getting home I would do a mobile regen, then park the truck. I know the last time this happened I parked the truck at 8% soot level in the dpf. The next morning I remote started my bone stock truck and when I came out to leave in 10 minutes of warmup time the dpf shot up to 45% from 8. I’d drive the truck a bit and it would drop a bit and level out around say 30% for the day. I had noticed this occurring at random over the past 5 or 6 months but figured it was due to the extreme cold temps but now it’s doing it when it’s warm out. Well after my 3rd DEF tank melt down in as many years almost leaving me stranded on the highway I made the decision to go ahead with the delete (It’s legal in my province). Shortly after I noticed at startup the truck would randomly smoke blue rather excessively. I doubt it’s related to the turbo rings or valves since it is random and stops immediately when I start driving. This leads me to believe it could be having injector issues. Possibly sticking open and leaking slightly. The dealership said all the injectors are operating within spec. The balance rates are all near 0.0 with the highest being 4 and 6 which hovers around 0.4-0.9. Their spec is +/- 4.0. So I checked my TMAP and it was a solid chunk of carbon soot. I replaced that and just ran a bottle of power service diesel injector cleaner through the truck. So far the rough idle is gone, balance rates seem marginally better than they were before, but that startup smoke is too random so I’ll have to give it some time to see if that resolves. I should add that the startup smoking thing happens at random whether the truck is cold or warm. Basically if you start the truck and idle it for a few minutes it may or may not blow blue smoke. More often not. I have also never used additives before, I have about 70k miles on the truck now. So with all that in mind, unless a guy had something that can monitor the soot levels they would never know this was occurring, and leading the truck to do far more regens than normal. The TMAP can potentially cause the engine to smoke depending on what the ecu decides to do when the sensor readings are erratic, on an emissions compliant truck this could easily lead to more regen cycles. I’ve also been monitoring the vgt vane position and it isn’t jumping around, lift pump rates are normal, FRP is good, oil pressure and temp is all good. So I’ll see what happens over the next couple weeks.
I have a 2024 Sierra 1500 AT4 with 8000 miles. My truck is stock other than the Banks iDash and the VSE catch. I run AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive with each tank. My regens have been dropping just like yours. I was around 380 miles per regen and now I’m down to a regen every 160 miles.
I’m wondering if it’s the additive? I feel like ever since I started running hotshot, my regens are more frequent.. I could be way out but it seems like that’s a common…
We appreciate all the data, time, and videos you put out. At the end of the day, vehicles will always be more reliable, and preform better when left stock. Way more engineers involved in the total development of that engine than the snake oil aftermarket companies that are just spitting out parts from their shiny CNC machine they invested in.
I agree the stock form will be best for most. I can't agree with the snake oil though... many products, yes, but not all. I show this on my channel with all of the installs I do.
Like others have already said, the airbox would be my first thought. You brought up a good point about winterized fuel, though. Starting in October when the stations in my area (southeast, I prefer Love's because of the Open Roads fleet discount) switch over to their winter blend, my truck started having a faint knock during low-speed acceleration. No CEL, no codes on a scanner, and only a faint drop in power on acceleration. Both the noise and power drop went away after about 4th or 5th gear and 45 mph. All problems stopped about two weeks ago at my last fill up. Coincidence or not, but that lines up perfectly with the time frame Love's has on their website discussing their pre-additized winter fuel program. I believe Exxon and Shell add cold flow agents into theirs as well. 2021 Sierra 1500, 46k miles, Hot Shots EDT in every tank, 350 city miles per regen, 600+ highway
@@cje26 I think my numbers speak for themselves above. I just run the diesel additive too. I oil additive is suppose to help even more but I'm not doing it til I'm out of warranty. Archoil is more popular with the Powerstroke trucks & it works wonders on them. Even that 6.0 Powerstroke that was the problem child. I figured I'd give it a try & I've seen nothing but slow & steady improvements as the Hotshot burns out the system & what Hotshot left behind.
Stock 24 GMC 1500 AT4 with just under 3500 miles. Short commute, 6 miles each way during the week, but longer 50 - 100 mile trecks on the weekend. No towing. Banks iDash is consistently reporting 160 miles between regens. DEF tank got down to 50% the other day. Refilling with 2.5 gallons got me upto 90%. I did change the oil and filter at 1300 miles, other than that I haven't done anything to the engine. I do add 1oz of Hotshots EDT at each fill up, usually around 15 - 18 gallons of diesel.
Just had the same issues with my 24 Lzo with 24k miles on it. It use to regen twice per tank, but now it's close to 4 times. I rerouted the pcv hose to vent under the truck instead of being sucked by the turbo.Will see if i can strech the regen
This was a few years ago so I can’t say if it is still happening today but the Ram guys who would run the S&B on their Cummins would also get more frequent regens. Often every 80-100 miles. I believe the cause was that it would create turbulence for the air meter and the truck had no idea how much air was coming through.
2024 Trail Boss LZ0 Bone Stock other than Smart stop/start. As I type this I'm sitting at 3616 miles and from day, 1 I have averaged around 180ish miles between Regens according to the Banks I Dash. I am starting to look at where I am getting Diesel from (brand type) to see if that is playing a roll in the length of time between Regens. I too have noticed after a Regen cycle, the DPF-SL seems to climb quickly to the 30-40ish range then from there creep up much slower to 100. This is 85% city driving with a 10 mile Interstate drive on my way home from work.
I have a stock 2023 with idash, with a 4 mile commute, all city. I use renewable diesel every fill up (not the bio 20). Average regen distance is 220 miles per idash. Last 2 regens was 240 miles and 215 miles.
Renewable diesel is most fuel stations here in Northern California. Most likley up and down California. The process is different than biodiesel. The cetane is super high, 70+ cetane. Pumps stickers has 80%-95% renewable and the rest % is bio or regular mix. Smellslike diesel, but not the strong odor. I’ve been using it on my ‘22 Ram Cummins since new. My truck as design by Ram have active regen every 24hrs engine hours. In which is 880 miles between active regens. Mileage no different than regular diesel of the past.
I have a 23 LZ0 in FL with stock air box and air raid dry filter with the PPE zilla intake. My average active regen is about every 125-150miles. I use 4oz AMSOIL fuel treatment every tank. Also tow heavy at times 7,000lb camper. So the idash will state 200+ miles average between regen however I know that’s just because when towing it’s not actively logging a regen and just spraying def to get the SL% down. I wouldn’t sweat those numbers.
22.5 LM2 with just under 36k. Completely stock short of iDash. Normal around town to work and stuff about 50/50 highway. Amsoil 0w-20. Also use Amsoil diesel all in one when i remember to put a bottle in my truck before fill up. 2-300miles give or take between regens. When running road trip distance on the interstate i will hit the max mileage before automatically being forced to do a burn which is about 650 miles i believe. Just last week had about 200ish miles on a current cycle then drove from Vegas to Flagstaff and back in one day. Soot load Percent did not increase while rolling 80-85. That's when i hit the max distance before forcing the regen at less tan 50%
2023 GMC SIERRA with the LZ0 and bone stock. Lowest REGEN 286 miles and highest REGEN 630 miles. Using Power Service diesel additive and have about 13,300 total miles. Idle hours 12% of total engine hours.
I bought my '23 LZ0 brand new last august and noticed when it was hot and humid out, the truck would only get around 110-180 miles per regen. Once the cold dry winter air got here, I got 500-600+ between regens all winter long. Now that its springtime and warming back up, my truck currently has 290 miles on this cycle and is at 90% dpf soot load. For some reason these 3.0's hate the hot humid air of summer time and so therefore have a really short distance between regens in the heat and humidity. And my truck is all stock currently with 4800 miles on it. Also, I have used Hot Shots fuel additives since i first got it home from the dealer and I get my fuel from a local co-op that sells a premium diesel fuel that's comparable to top tier diesel fuel.
Alright here’s some data. I designed my own custom intake. It flows 494cfm while the stock box with a k/n filter flows 450cfm as tested. The increase in CFM with the high flow intake changes the AF mixture a LOT. Enough to reduce power. In fact the ECM is overly richening the mixture and reducing boost via closing the vane position. These ECMs punish us for mods. Anyways, with my custom intake I’m regening every 65 miles. Going to go back to stock and test again and will get more data. -LZ0 with 5000 miles
My truck regens pretty frequently, I’d say probably about the same. 2-3 regens per tank. I do a lot of highway driving maybe about 8,000 miles a month and lots of idling. I notice it goes into regen for about 10 minutes and then stops if I’m just idling. I think these trucks don’t actually regen unless it’s driving so it just attempts to regen and I assume once I get back on the highway it starts to regen properly. I almost always get a check engine light for the nox sensor when I’m only doing city driving but once I get out on the highway the light goes away. The truck has been like that since new. I did recently install s&b airbox and ppe resonator delete but it’s been doing that long before I installed them.
90 to 130 miles between regen’s. 2024 stock I do use hot shots everyday additive. The regen’s only last 18 to 20 miles at highway speed. I have 1100 miles since new and use banks gauges
2023 AT4. 12000 miles. My truck is regens about 3 times per fuel tank. Truck is stock. 25 min highway drive to and from work. Short trips around town...
I have not put any DEF in my truck since September of last year. It is getting low now. Ruff guess 7K miles. I drive mine easy getting 30+ mpg. But I will run it from 2-4 very hard every few weeks. I read somewhere. The LM2 needed drove hard sometimes to clean out the emissions/EGR. Seems to be the same on the LZ0. I maybe crazy but after 2000ish miles the truck just ever so slightly acts different. After running it hard for just a short bit. It is fine. During the summer when I’m pulling my 9k lbs enclosed trailer. The truck gets run hard enough. It does good all the time. But drinks the DEF if I am pulling much over 70mph.
I have a 2023 Chevy RST with the LZ0 and zero mods, not even the iDash. I have just been keen on paying attention to the idle from driving 2500HDs in the past. For the first 10k+ it seemed to rarely regen more than once per tank, maybe 2 every few tanks, of fuel. Had a warranty issue with the NOx sensors and had that repaired. A little before that and ever since it seems like it's doing a regen all the time. I have just under 15k on the truck and have had Chevy tell me there's nothing they can do.
Yup. Back to stock now and regens are back to normal. GM does not offer stock mapping to compensate for high flow intakes. Shame on you GM. Custom tune or leave it all stock.
2023 LZ0 - About 175 miles between regens, drive about 90 highway miles 5 days a week. Probably coincidence and unrelated but seems like the duration went down after I had the exhaust replaced for the buzzing noise in the exhaust valve. Prior to the exhaust work it was around 235 miles between regens. No mods.
My 2022 lm2 had the same had more regen normal. After the station, stop selling winter blended fuel. After ran hotshots Diesel extreme went long drive on intestate. It went back regen every 250 miles
I must have missed a vid or two cause I had just commented a couple vids back I was going to order the K&N with the PPE (I think is the name) pipe to run at the back cause the K&N one was a bad fit......now there is a complete different cold air intake system on all together....
I am often changing and testing. I still believe the Stock airbox and PPE Zilla pipe is the way to go. The K&N intake if you want the added sound. Here is the newest intake video: th-cam.com/video/d8T0w3dt63Y/w-d-xo.html
My 21 is bone stock besides wheels and tires that i added in the last 3K but I cant remember making it past 100 miles before a regen. I usually have them around 80 miles. my truck does fall into the camshaft cover TSB so maybe thats it.
I feel it is better than the 22 LM2, I have a video on the changes to the engine. I also have a video on the regen. It would be a huge message to type up to answer, so hopefully these videos help. th-cam.com/video/dxPkKIX-4aM/w-d-xo.html th-cam.com/video/DVIgc_7e6BM/w-d-xo.html
2023 Sierra 1500 LZ0 completely stock except Banks iDash. I too noticed a recent drop in miles between regens from upper 200s down to 150-180. Given the range of modifications across everyone experiencing the issue, it seems like an update from GM or winter fuel to be the cause of the drop. I'm curious to see what you find out.
Is there such a thing as diesel supply switching from winter blend to summer blend being the culprit? I don't know. 23 with about 24,000 miles. Only had the banks idash for a few weeks averaging about 175 per regen. Unfortunately i dont have previous data to compare
Yes, I am unsure when that actually takes place but that is one thing to consider. In your case, your regens may have always been 175ish, that seems to be a possibility when comparing to others. In my case, I have always had 400ish regen intervals so this was out of the ordinary for me. Keep me informed if you see a change in your regen frequency.
Mine’s fully modified minus the S&B. (Stillen, K&N filter, carbonzilla, ppe charge air cooler) I’ve been averaging about 330 miles per regen but it recently dropped to 240. I’m not sure if the non winterized fuel is having that effect. I think that overall I’ve seen shorter regen cycle based on how I drive. I’m very light on the accelerator and I coast a lot. I feel like this lighter style of driving, which keeps my egt lower, is a big cause of my short cycle. I’m hoping the catch can will help alleviate that a bit, but I’m still waiting on mine.
@@DemonWorks I forgot to mention that I’m using diesel Kleen every fill up. I recently switched from the white winter bottle to the silver summer bottle now that we aren’t doing below freezing anymore. ‘24 AT4 LZ0 with 3,112 miles, with 49% def remaining. My history doesn’t show any software updates installed, so unless they stealth dropped something I don’t think that’s it.
23 LZO AT4. Are you running B20 or regular diesel #2? My truck regens too much on bio diesel so I stick to my local chevron station that has regular #2 diesel and fuel filter stays clean. Regens about once per tank and lasts about 15 miles. Regen stops at 30% always then goes down to 1% and slowly climb if I keep driving. It will climb fast for me after starting it cold and ive gone up 25-30% on a 30 minute hwy drive before, but sometimes it will only go up a couple percents on the same drive from cold. Recently I took a 4 hour trip to sand mountain and the truck seemed to love hill climbs. I left home at 60% dpf and at the top of the tahoe mountains it had gotten really hot during the climb and burned itself down to 55% 2 hours into the drive. Barely used any def on that trip. Regened on the way home and climbed up fast to 50%. It's very random.
@@DemonWorks The one nice thing about diesel in CA is a state requirement of a minimum cetane rating of 53. About the only thing nice i can think of right now:)
I switched from Hotshots to Archoil & I've seen 1+ more MPG gain. Bone stock 23 LZ0 & I'd guess I probably get a regen every 400 miles give or take slightly. Mostly highway miles in a 4x4 crew cab X31 getting around 700 miles to a tank so no complaints.
I've used the archoil diesel fuel and oil additive since the second tank of fuel and the second oil change. Oil changes at 5k miles. Pricey ehh, maybe upfront but not really, when you break down the dosing and cost per dose. I'm going to keep running it. 2022 Crew cab LTZ Z71 6.6 bed. Hwy mpg at 60/65 is mid 30s, last road trip to Phoenix from Southern California I drove 85mph and averaged 31mpg that trip. Regen happens once a tank typically, 350 400 miles. 15k on the truck now.
@@DemonWorks Gotta pay for stuff that works or you could toss $ out the window on Hotshots. Pay a little more for results sounds like a better option to me hints why I made the switch.
@@BakoRick I only use the Archoil fuel additive so far. I was hesitant on the oil additive but wanted to use it. The 3.0 oil weight is picky & even has to be a specific type just for the LZ0 3.0 motor. I'd like to hear from others using it & if using it would void factory warranty.
I was a bit hesitant also, but I found no information that would suggest it could harm anything. It just adds a lot more lubricity and it doesn't change the viscosity, I know there is a potential risk with it but I have an extra extended warranty, I do with I had a data recorder installed from the very beginning so I could have seen if there was any change in DPF soot build up and regen frequency. @vanlifebiker
I am fully stock, run hot shots secret since new, 3 months and my I-dash shows I am averaging 223 mile per regen. Current tank is going to regen in less than 160 miles. Going to stop the hot shots to see if it makes a difference.
178 miles into this tank with no Hotshots EDT and my Idash says I am at 91% so it will probably start a regen in the next 20 miles. Will be putting about 2000 miles on my truck the next three days, I will keep track of the regens
Busy weekend put 1600 miles on the truck witout and additives and I have gone through 5 regens and I am currently at 80% on the last regen. The first regen that was with half treated and half untreated fuel my truck regened at 209 miles and the last full regen I had was 341 miles according to the Idash. I averaged about 73 mph for that 1600 miles and normally I average 40-45 mpg per tank so I will have to see if my mileage stays up. 341 is longest regen since new and I just rolled over 7k miles
First Tow report: Mostly Stock 24 AT4 with: Stillen intake, 275/65/20 Load Range E K03's (put on just before this trip) Banks gauge Pulled 6500 pounds of cargo and car on a hauler about 1000 miles (Civic on 2300# 16ft with dovetail) random crap in bed of truck At start 1 bar on DEF Gauge empty 400 miles in, 2 bars down on DEF Gauge, warned about 1000 mile range 625 miles in, 2 bars down on DEF Gauge, warned about 380 miles of range (225 miles driven since warning about 1000 miles of range) 750 miles in, red DEF Gauge warning about 50 miles to reduced range (125 miles driven since last update) a regen was also taking place Added 2.5 gallons of DEF, went to 2 bars empty on DEF Gauge, updated range to 380 miles of range 885 miles in, 3 bar empty DEF Gauge, received warning about 250 miles of range remaining (135 miles driven since last update), topped off DEF, took less than 2 gallons. Range updated to 380 miles of range. DPF % never went above 1 the entire leg of this part of the trip. DPF % was always going down slowly from about 85% at the start to around 10% before a regen and warning about reduced speed happened at the same time. Fuel economy was around 12-14 MPG (East Texas to Central NM) Never lacked power. Trans temps were high for long climbs or traffic (210F was highest) EGT 1 - 1150F on long uphill sections, normally at 900-ish on level ground EGT 2 - 1150F on long uphill sections, normally at 900-ish on level ground EGT 1 - 1000F on long uphill sections, normally at 800-ish on level ground She seems to run hot! I wonder if the truck uses DEF during non-regens while in tow mode. Odd that the DPF was working downward as we pulled. Overall, like the truck. It has a bunch of annoyances though. I am thinking they could reset the stored settings and let it "relearn". MPG, DEF, so much all over the place. Add the random, "clean parking sensor" warning for a rear sensor, front camera warning about cleaning that abruptly turned off cruise control and then all of a sudden came back to working normally on to two TPMS sensors that would just randomly "disappear" while driving. Also, the "Gain settings were not recovered due to an error" at start up that happened most of the time. GM needs to get rid of all of this software crap.
Im a huge fan of your channel and I will be very curious to see what you conclude in the next few months - but I got to ask, are all these issues such as a higher initial investment, oil consumption that forces folks to spend $$ on larger oil pans or add oil in between changes, higher oil change costs, higher maintenance costs, insane DEF consumption and associated cost (especially while towing) etc. really worth the hassle vs. just pumping gas and go? Are you loving the LZ0 because you just want to love a diesel or is it really worth it when you look at the big picture? It would be great to see a vlog on your views “is it worth it” after your investments and having owned this truck for some months…… kind of “looking back, would I do it again” episode. Im still on the fence on engine option for the 2025 model year I hope to order.
I have been taking notes on a video similar to what you are asking about. Just you asking, shows that I need to put something out. Just so you know, this is my 5th 3.0 Duramax, I do love them but they come with some trade offs. I will do a video laying out everything I can on that.
Thanks - that would be great. Ive been waiting for the 2025 Tahoe Z71 or RST with 3.0L vs 6.2L. As far as I know the issues with the failing lifters and push rods are not as prevalent with 2024 gas engines (unless im wrong). Now Im not sure if the wait was worth it given that I do less than 10K miles per year so the higher price of gas and lower mpg is offset by these issues and higher cost.
@@kaivonmortazavi8656 DFM lifter failures are down from a couple of years ago, but it seems main bearing failures are up more recently. I am on the Tahoe/Yukon forum and there's been a handful of 6.2L owners reporting low mileage engines with spun main bearings. Interestingly no 5.3L owners spinning bearings so it seems to be isolated to the 6.2L.
Agree, I am in the same boat, asking myself “is it worth it.” I Like the looks of the GMC AT4 and I tow a boat quite a bit so would appreciate the torque of the diesel. As I read through the comments people are using additives and changing oil much more than I do in my gas vehicle.
One thing I notice on my lzo trail boss, if it loads up quickly, I have hooked up my 5k pound trailer and do a hard pull up the mtn it will drop back down to 10-20% without a regen, I also let it idle for 1-3 minutes when done driving and it usually drops 3-4%. I can smash the gas from a stop light and it will gain 3% but if I have a slow takeoff it it doesn’t gain much. Steady throttle changes seem to keep the regents longer.
I couldn't say what the supplier is using. Possibility of change, but many people on here have been experiencing these same numbers, hopefully mine goes back to the way it was.
i got 488 miles on my last regen. But about half of those miles where pulling trailers. GM needs to come up with a better system that feeds the DEF Fluid. I've had my engine light come on about 3 or 4 times. But after a Regen it would go off by itself. Also at idol you can't stand at the back of the truck without tearing up with the pungent smell of Amonia gag you. My thought is the when i used to start my truck in the morning to warm up for about 5 minutes that the def system is like a 2 stroke motor, and loads up the engine with unnecessary Fluid when at idol. I think the system isn't calibrated with engine load if that makes any sense. What are your thoughts?
Hey guys, my Bank’s I dash numbers are Dpf% is either 0 or 328. It goes back and forth from time to time but I have never seen a gradual build up of the numbers on the dpf%. Is this normal? Is it supposed to build as you go?
Banks has a "Beta" firmware update for the iDash that corrects this. Call Bank's tech support number and they'll email you with a link to download the firmware.
Almost 13k miles, Regen averages 180 miles. I fill it up with Hot shots EDT. Might try arch oil next. I do a lot of short tripping around town though, so I'm sure that hurts my average.
You essentially bypassed the pcv system and now venting it to the atmosphere and under your hood. I would assume there will be an oil residue mess to follow. With the pcv system now unable to operate as designed, you won’t be pulling the oil and water vapors through the system and will now allow the vapors to just accumulate within the engine. It will be beneficial at very high rpms and crankcase pressures, but everywhere else, likely hurting the engine.
I just buy a used LZ0 2023 with 40k miles, what I notice when I got home is that when I get the oil cap off with the engine running, there is white smoke coming out of the engine, is that normal? I don’t know if it’s serious as it just have 40k miles but nobody knows if the first owner took care of the truck or not
You will see that by design, all modern diesel engines will show that, this one is no exception. if you had excessive crankcase pressure, you would get a check engine light since there is a pressure sensor in the camshaft cover.
150-160 mile regen cycle!regardless of highway or city driving. 23 LZO stock. No winter fuel this far south. Tried Hot Shots extreme - no changes. Started running Hot Shots daily - no changes.
I seen no change on my 23 LZ0 using Hotshot either. Switch to Achoil & I've seen about 1 more MPG. I also use Amsoil oil too which I didn't see much change but everyone brags on it.
@@vanlifebiker I switched to amsoil as well, thinking I will go back to mob 1 next oil change. Only thing I noticed on the switch from factory fill was my oil temps dropped ~15 degrees!!
i own a 2023 silverado 1500 with 3.0 Duramax LZ0 with 8,500 miles and i have never notice a regen but is stock with no banks but people said they can tell by the smell when they have a regen not me no smell not notice any more diesel consumption I don't know .
Possible! But i am leaning towards intake related since I was solid on my regens then this sudden change. Could have been a programming change as well though.
That’s crazy if it stays like that, I know it kills economy. Hopefully it changes soon 🙏🏽does cold weather affect it as well? Curious what the comments will have
@@DemonWorks I've brought it in twice. They say nothing is wrong and to monitor. 30 dollars every 2 tanks is insane. Eating up the fuel savings of running a diesel.
Regen yesterday at 174 miles. It lasted 13.5 miles at highway speeds. The root cause may very well be the dealer has new software that has to be flashed to the ECM. It addresses random CEL issues. I had mine flashed a month ago and the regens all been in between 160-180 miles. I am taking a 600+ mile round trip on Friday. I will report back what the regen was like on the trip. It will be 95% highway.
Hey ! No notifications on the dash unless there is an issue. The idle RPM will go up but if you are driving on the freeway, you will likely only notice if you are watching the mpg on the cluster, like TakeDeadAim said.
100% up to date and my prior 4 3.0's didn't have this frequent regens and I only ran amsoil once. I don't see the amsoil making any difference, but I appreciate the ideas !
@DemonWorks my lzo before updates with amsoil was 600+ miles between regens, now with updates same oil about 300 regens. With oem oil it was as frequent as 100-200 miles
Every two tanks of diesel, I need to put a jug of DEF in - that and the crank cover seal failure and dropping all my oil out of it - those are the only things odd about the truck lol
@@DemonWorks Ya i saw that - I will try to find your email and send you the pic - you can post it if you choose. They said it was the front of the crank cover seal. I dunno lol
The engineer said it regens more times in the first 19000 miles the n it will between 19000 and the rest of the life of the truck the more miles you drive the less amount of regens happen I guess
I've had my '24 AT4 since the first of February and bought an iDash shortly after. I have logged my regen's since plugging in the iDash: Regen start 625 miles (2/24/24) Regen start 785 miles (2/29/24) (160) Regen start 935 miles (3/4/24) (150) Regen start 1117 miles (3/12/24) (182) Regen start 1240 miles (3/13/24) (123) Regen start 1476 miles (3/19/24) (236) Regen start 1634 miles (4/2/24) (158) Regen start 1803 miles (4/5/24) (169) Regen start 1967 miles (4/8/24) (164) Regen start 2198 miles (4/12/24) (231) Regen start 2332 miles (4/17/24) (134) Regen start 2576 miles (4/29/24) (244) The number on the right is the miles between regen. Averaging about 177 miles. Duration takes approx. 10min from activation to completion (about 13 highway miles). Fuel economy is averaging right at 27mpg with mixed driving (low as 25mpg & high as 31mpg). Even during regen's, fuel economy is still 22-24mpg, but I am light on the pedal. I'm trusting that this is all normal GM programming... If you learn anything about the programming parameters or updates, please let us know.
@@chadclark5204 My understanding is that DEF usage is largely based off of fuel usage as a ratio. That ration may not be linear, but that's my best way to describe it. My experience so far with regen's has proven that the fuel penalty during a regen is very minor. The regen process is short (10 minutes) and my mpg's only drop 2-3 for that very short duration. With that, the DEF consumption due to a more frequent regen cycle is not even practically measurable. I have 2700 miles on my truck so far and have only used about a 1/4 tank of DEF. I've been light on the pedal and have not towed anything while I get some mileage on the new engine. Changed the oil at 800 miles and added the iDash. I run a maintenance amount of Power Services Diesel Kleen fuel additive to simply keep things clean and lubricated and it gives my OCD brain some peace. So far, I am very pleased with this 3.0 and 10spd drivetrain.
@@DemonWorks only one time did it show the regen keep driving and the only problem if had with the truck was the def temperature Sencer I figured I’d reach out to my findings because my truck probably has more miles the most lm2 duramaxs on the road
@@Farmerboy4630that just means it was having a hard time completing. The regen process is meant to take place and not tell you every time. Unless you have aftermarket gauges to tell you.
many have reported the same regen amounts, I just started. I agree that would be the assumption and the catch can I installed will help see what I am consuming as far as oil goes. I am leaning towards it being related to the intake.
Easy fix, delete emissions. I know I know, it voids the warranty… but seriously, I just a 22’ trail boss with the 3.0L and I’m definitely deleting it the second it hits 100k miles.
I just installed mine yesterday, i’ll report back in two to three days and see if it affects regen, it should be extended because the engine will no longer burn oil.
2023 LTZ LZ0 86,000+ mi, I regen every 200-300 miles. Drive long trips 2-5 hours long every day. 5-6 short trips during sales calls. I get longer distance between regents when I use BP diesel. I also use Hotshots Extreme every fill up.
2023 AT4 with just under 8000 miles, all stock. I run hot shots edt. I have monitored regens with an idash and they have always been between 120 - 190 miles.
My 23 At4 just had its 7500 service. Regens have been very frequent (121-143 miles) recently. My dealer sells ALOT of 3.0’s. The diesel service manager said they should get 400-500 per regen. Since I was only scheduled for the 7500 service I would need to schedule for the regen issue. The manager suspected it is caused by a particulate filter sensor or faulty fuel injector. We were in the area for a trip (7hrs from home) that’s why we had Laura GMC do the service. I have a appt with my local dealer on the 20th to look into the issue.
Picked up the truck from the dealer. They had no clue, contacted GM and their techs are working on it. They said they will contact me next week with an update from GM. It can’t be that hard to figure out. If the LM2’s are not having the issues only the LZO, look at the changes and reverse engineer it.
If you have a tuner turned up to a higher level like the banks tuner and you dog on it, your regents will be way more frequent. Turn the tuner to STOCK and I’d bet your problem goes away. This also includes the pedal monster being turned up as well.
2024 Sierra 1500 LZ0, 2750 on the ODO. Banks I dash (beta), Smart Stop/Start, stock otherwise. Changed oil and filter @2200 miles, now running the PPE filter and amsoil 0W20, will probably go back to Mob 1 next oil change. Running on road fuel from a 500 gallon tank, 2 oz of hot shots EDT every fill up (usually less than a 1/4 tank on fill up). Sitting at 49% on DEF per I Dash(truck was full of DEF when it left the lot with 4 miles on the clock). Been running the I Dash since ~450 miles, Longest between regens has been 246 and shortest 184, Typically completes a regen within 12 miles. I have noticed here lately that it will go all the way down to zero on soot load, however, it will pop back up pretty quickly and before you know it will be at 50%. Regen typically shuts off ~30% SL. So I'd say I'm running ~200 miles average on Regen
ugh, I don't like that 200 mile average either. Thanks for sharing ! I want my 400+ back :-) My regen does typically go back to 0-5% after regen as well.
2022 gmc 1500 3.0 lm2
Makes me think about what’s in the diesel now that maybe wasn’t or less of before.
2023 LZ0. Factory air box, PPE elbow, S&B intake pipe. Hot shots EDT every tank. Regens about every 150-200 miles. Complete in about 15 miles. Mainly driving short trips less than 30 miles. Many trips just a handful of miles.
I have a 24 Silverado since end of September, I have 11200 moles on it. I get 150-250 miles on mixed use, 300-400 highway use and 500-600 towing since new. I use amsoil all in one during the winter and injector clean and cetane boost during the summer. It seams to be determined by how hot the egt/2 numbers are, if they are around 500-600* during in town and 600-700 on highway and 800-900 towing. My numbers have been consistent.
Just noticed that mine regens more often as well, typically 150-200 miles. Before I was averaging 350-450 miles. Happened about 3-4 weeks ago. Same MPGs though. 2021 AT4
2023 Trail boss, LZ0. 19k miles on my truck. Zero modifications, bone stock just an I dash gauge. Just started noticing the same exact thing on my truck. Just as recently as couple weeks ago used to get 300-350 miles before a regen. Now my soot level on idash loads up super fast, regens every 100-150 miles now. However like you said, the regens are fast (10-15 mins). Weird. Wonder if GM did an update or this is just normal cycle for the Lz0. I miss my LM2 used to get 6000 miles out of a def tank!
Sure seems like something changed !
I've been around 150 to 250, The 250 was from a long road trip and the 150 is usually around town. I'm running the PPE Charger, intake pipe and drop in AEF Dry filter. Also running the VSE Fuel filter and waiting on the catch can.
I'd like add a comment regarding buying a gas V8 vs the LZ0 diesel. . . I currently own 2023 Silverado 1500 with the 3.0l LZ0 diesel with about 7,500 miles. My previous truck was a 2016 RAM 1500 with the 5.7L gas V8, (owed new, driven to 62,000 miles). Driving routes & habits are essential the some on both trucks (i.e. same routes & loads). The 2023 LZ0 diesel averaged 22-25 city and 24-32 hwy. The 2016 RAM V8 gas averaged 14-17 city and 18- 23 hwy. Both trucks was (and is) had minor software updates and was relatively trouble free. I've used 1.3 tanks of DEF in 7,500 miles and have not paid much attention to DPF regen., (Chevy engineers made this a none factor for me). Changed engine oil at 730mi, 4,025mi & 7,054mi (due to new engine). Never more then half-quart low at oil change. I'm completely stock on both trucks and carry loads occasionally, i prefer the LZ0 diesel.
2023 LT stock, 19000 miles, I have noticed more regens than before as well, I think I had 3 regens in one tank full as well, I don't have a banks, but I can tell from the smell and higher idle.
Do you think the 3 regens was abnormal for you this time?
2024 LZ0 stock. average 180-200 mostly mixed driving 20 miles or less. last regen was about 150 miles. usually lasts about 8 miles on city streets off highway. MPG is about 25 every fill-up. def usage is about a gallon per thousand miles without towing. i use costco top-tier diesel everytime. i am gonna used hotshot's edt for the next few tanks. My first 2 tanks of fuel, regens were about 75 - 90 miles between. my longest time was about 350 miles in the winter using ac delco cold fuel addititve.
I have a 2024 Sierra AT4 LZO with 2,500 miles and my regens have been happening every 100 to 150 miles since I bought it new in February of this year. I usually have 3 regens per tank as well. I started using Archoil fuel additive recently and have noticed my regens finish in 10 minutes or less now. I’m not sure if it’s the Archoil additive making the regens quicker or something else. Thanks for all the great info you provide!
I got an idea. Let's' do a full delete and see what happens. For entertainment and research purposes only.
I noticed My 21 3500 doing a weird thing where before completing a long highway drive and getting home I would do a mobile regen, then park the truck. I know the last time this happened I parked the truck at 8% soot level in the dpf. The next morning I remote started my bone stock truck and when I came out to leave in 10 minutes of warmup time the dpf shot up to 45% from 8. I’d drive the truck a bit and it would drop a bit and level out around say 30% for the day. I had noticed this occurring at random over the past 5 or 6 months but figured it was due to the extreme cold temps but now it’s doing it when it’s warm out.
Well after my 3rd DEF tank melt down in as many years almost leaving me stranded on the highway I made the decision to go ahead with the delete (It’s legal in my province).
Shortly after I noticed at startup the truck would randomly smoke blue rather excessively.
I doubt it’s related to the turbo rings or valves since it is random and stops immediately when I start driving.
This leads me to believe it could be having injector issues. Possibly sticking open and leaking slightly. The dealership said all the injectors are operating within spec. The balance rates are all near 0.0 with the highest being 4 and 6 which hovers around 0.4-0.9. Their spec is +/- 4.0. So I checked my TMAP and it was a solid chunk of carbon soot. I replaced that and just ran a bottle of power service diesel injector cleaner through the truck. So far the rough idle is gone, balance rates seem marginally better than they were before, but that startup smoke is too random so I’ll have to give it some time to see if that resolves.
I should add that the startup smoking thing happens at random whether the truck is cold or warm. Basically if you start the truck and idle it for a few minutes it may or may not blow blue smoke. More often not. I have also never used additives before, I have about 70k miles on the truck now.
So with all that in mind, unless a guy had something that can monitor the soot levels they would never know this was occurring, and leading the truck to do far more regens than normal. The TMAP can potentially cause the engine to smoke depending on what the ecu decides to do when the sensor readings are erratic, on an emissions compliant truck this could easily lead to more regen cycles.
I’ve also been monitoring the vgt vane position and it isn’t jumping around, lift pump rates are normal, FRP is good, oil pressure and temp is all good. So I’ll see what happens over the next couple weeks.
I have a 2024 Sierra 1500 AT4 with 8000 miles. My truck is stock other than the Banks iDash and the VSE catch. I run AMSOIL Diesel Injector Clean + Cetane Boost Fuel Additive with each tank. My regens have been dropping just like yours. I was around 380 miles per regen and now I’m down to a regen every 160 miles.
oooh, that is odd. I wonder what could have changed.
I’m wondering if it’s the additive? I feel like ever since I started running hotshot, my regens are more frequent.. I could be way out but it seems like that’s a common…
We appreciate all the data, time, and videos you put out.
At the end of the day, vehicles will always be more reliable, and preform better when left stock.
Way more engineers involved in the total development of that engine than the snake oil aftermarket companies that are just spitting out parts from their shiny CNC machine they invested in.
I agree the stock form will be best for most. I can't agree with the snake oil though... many products, yes, but not all. I show this on my channel with all of the installs I do.
@@DemonWorks banks has destroyed most if not all aftermarket diesel parts and programmers. But I do enjoy your content.
Like others have already said, the airbox would be my first thought.
You brought up a good point about winterized fuel, though. Starting in October when the stations in my area (southeast, I prefer Love's because of the Open Roads fleet discount) switch over to their winter blend, my truck started having a faint knock during low-speed acceleration. No CEL, no codes on a scanner, and only a faint drop in power on acceleration. Both the noise and power drop went away after about 4th or 5th gear and 45 mph.
All problems stopped about two weeks ago at my last fill up. Coincidence or not, but that lines up perfectly with the time frame Love's has on their website discussing their pre-additized winter fuel program. I believe Exxon and Shell add cold flow agents into theirs as well.
2021 Sierra 1500, 46k miles, Hot Shots EDT in every tank, 350 city miles per regen, 600+ highway
those are good numbers !
I get 600+ in the Winter using Archoil & I've seen 700+ to a tank in the Summer. 23 LZ0 4x4 Crew Cab X31. Love my GMC LZ0
@@vanlifebiker How are you liking the Archoil? I haven't heard a ton of people using it
@@cje26 I think my numbers speak for themselves above. I just run the diesel additive too. I oil additive is suppose to help even more but I'm not doing it til I'm out of warranty. Archoil is more popular with the Powerstroke trucks & it works wonders on them. Even that 6.0 Powerstroke that was the problem child. I figured I'd give it a try & I've seen nothing but slow & steady improvements as the Hotshot burns out the system & what Hotshot left behind.
Stock 24 GMC 1500 AT4 with just under 3500 miles. Short commute, 6 miles each way during the week, but longer 50 - 100 mile trecks on the weekend. No towing.
Banks iDash is consistently reporting 160 miles between regens. DEF tank got down to 50% the other day. Refilling with 2.5 gallons got me upto 90%.
I did change the oil and filter at 1300 miles, other than that I haven't done anything to the engine. I do add 1oz of Hotshots EDT at each fill up, usually around 15 - 18 gallons of diesel.
2024 trailboss 8000 miles on it. Bone stock 3-4 regens per tank. Getting roughly 450 to 500 mil3s per tank. Zero fuel additives used.
Just had the same issues with my 24 Lzo with 24k miles on it. It use to regen twice per tank, but now it's close to 4 times. I rerouted the pcv hose to vent under the truck instead of being sucked by the turbo.Will see if i can strech the regen
This was a few years ago so I can’t say if it is still happening today but the Ram guys who would run the S&B on their Cummins would also get more frequent regens. Often every 80-100 miles. I believe the cause was that it would create turbulence for the air meter and the truck had no idea how much air was coming through.
I believe it! The MAF sensor is right at a bend ....
2024 Trail Boss LZ0 Bone Stock other than Smart stop/start. As I type this I'm sitting at 3616 miles and from day, 1 I have averaged around 180ish miles between Regens according to the Banks I Dash. I am starting to look at where I am getting Diesel from (brand type) to see if that is playing a roll in the length of time between Regens. I too have noticed after a Regen cycle, the DPF-SL seems to climb quickly to the 30-40ish range then from there creep up much slower to 100. This is 85% city driving with a 10 mile Interstate drive on my way home from work.
Same here with the rapid initial climb then slow. Only now, it's been rapid with no slow :-(
I have a stock 2023 with idash, with a 4 mile commute, all city. I use renewable diesel every fill up (not the bio 20). Average regen distance is 220 miles per idash. Last 2 regens was 240 miles and 215 miles.
Can you give me more info on the fuel used and where are you?
Renewable diesel is most fuel stations here in Northern California. Most likley up and down California. The process is different than biodiesel. The cetane is super high, 70+ cetane. Pumps stickers has 80%-95% renewable and the rest % is bio or regular mix. Smellslike diesel, but not the strong odor. I’ve been using it on my ‘22 Ram Cummins since new. My truck as design by Ram have active regen every 24hrs engine hours. In which is 880 miles between active regens. Mileage no different than regular diesel of the past.
I have a 23 LZ0 in FL with stock air box and air raid dry filter with the PPE zilla intake. My average active regen is about every 125-150miles. I use 4oz AMSOIL fuel treatment every tank. Also tow heavy at times 7,000lb camper. So the idash will state 200+ miles average between regen however I know that’s just because when towing it’s not actively logging a regen and just spraying def to get the SL% down. I wouldn’t sweat those numbers.
My red flags went up because none of my trucks had regens like this, including this one. It just suddenly started. I'm determined to find the issue.
22.5 LM2 with just under 36k. Completely stock short of iDash. Normal around town to work and stuff about 50/50 highway. Amsoil 0w-20. Also use Amsoil diesel all in one when i remember to put a bottle in my truck before fill up. 2-300miles give or take between regens. When running road trip distance on the interstate i will hit the max mileage before automatically being forced to do a burn which is about 650 miles i believe. Just last week had about 200ish miles on a current cycle then drove from Vegas to Flagstaff and back in one day. Soot load Percent did not increase while rolling 80-85. That's when i hit the max distance before forcing the regen at less tan 50%
2023 GMC SIERRA with the LZ0 and bone stock. Lowest REGEN 286 miles and highest REGEN 630 miles. Using Power Service diesel additive and have about 13,300 total miles. Idle hours 12% of total engine hours.
Great numbers !
I bought my '23 LZ0 brand new last august and noticed when it was hot and humid out, the truck would only get around 110-180 miles per regen. Once the cold dry winter air got here, I got 500-600+ between regens all winter long. Now that its springtime and warming back up, my truck currently has 290 miles on this cycle and is at 90% dpf soot load. For some reason these 3.0's hate the hot humid air of summer time and so therefore have a really short distance between regens in the heat and humidity. And my truck is all stock currently with 4800 miles on it. Also, I have used Hot Shots fuel additives since i first got it home from the dealer and I get my fuel from a local co-op that sells a premium diesel fuel that's comparable to top tier diesel fuel.
Just bought mine this summer. Regens about every 180 miles. I'll keep an eye on it in fall. Thanks for the heads up
Alright here’s some data. I designed my own custom intake. It flows 494cfm while the stock box with a k/n filter flows 450cfm as tested. The increase in CFM with the high flow intake changes the AF mixture a LOT. Enough to reduce power. In fact the ECM is overly richening the mixture and reducing boost via closing the vane position. These ECMs punish us for mods. Anyways, with my custom intake I’m regening every 65 miles. Going to go back to stock and test again and will get more data. -LZ0 with 5000 miles
whoa ! that's crazy. I too, believe this is from an inaccurate maf reading.
My truck regens pretty frequently, I’d say probably about the same. 2-3 regens per tank. I do a lot of highway driving maybe about 8,000 miles a month and lots of idling. I notice it goes into regen for about 10 minutes and then stops if I’m just idling. I think these trucks don’t actually regen unless it’s driving so it just attempts to regen and I assume once I get back on the highway it starts to regen properly. I almost always get a check engine light for the nox sensor when I’m only doing city driving but once I get out on the highway the light goes away. The truck has been like that since new. I did recently install s&b airbox and ppe resonator delete but it’s been doing that long before I installed them.
90 to 130 miles between regen’s. 2024 stock I do use hot shots everyday additive. The regen’s only last 18 to 20 miles at highway speed. I have 1100 miles since new and use banks gauges
Think I will stay put with my LM2.
2023 AT4. 12000 miles. My truck is regens about 3 times per fuel tank. Truck is stock. 25 min highway drive to and from work. Short trips around town...
sounds like our driving is the same, I used to get 400ish+ per regen.
I have not put any DEF in my truck since September of last year. It is getting low now. Ruff guess 7K miles. I drive mine easy getting 30+ mpg. But I will run it from 2-4 very hard every few weeks. I read somewhere. The LM2 needed drove hard sometimes to clean out the emissions/EGR. Seems to be the same on the LZ0. I maybe crazy but after 2000ish miles the truck just ever so slightly acts different. After running it hard for just a short bit. It is fine. During the summer when I’m pulling my 9k lbs enclosed trailer. The truck gets run hard enough. It does good all the time. But drinks the DEF if I am pulling much over 70mph.
I agree, all diesels need to be driven hard every once in a while as the high temps help clean things up.
I have a 2023 Chevy RST with the LZ0 and zero mods, not even the iDash. I have just been keen on paying attention to the idle from driving 2500HDs in the past. For the first 10k+ it seemed to rarely regen more than once per tank, maybe 2 every few tanks, of fuel. Had a warranty issue with the NOx sensors and had that repaired. A little before that and ever since it seems like it's doing a regen all the time. I have just under 15k on the truck and have had Chevy tell me there's nothing they can do.
Yup. Back to stock now and regens are back to normal. GM does not offer stock mapping to compensate for high flow intakes. Shame on you GM. Custom tune or leave it all stock.
Just got my truck all the way back to stock. Gonna run a tank over weekend and see if the intake is in Fact the culprit
I’m going to put my stock intake box back on tomorrow, fresh tank to follow.
2023 LZ0 - About 175 miles between regens, drive about 90 highway miles 5 days a week. Probably coincidence and unrelated but seems like the duration went down after I had the exhaust replaced for the buzzing noise in the exhaust valve. Prior to the exhaust work it was around 235 miles between regens. No mods.
Very interesting!
My 2022 lm2 had the same had more regen normal. After the station, stop selling winter blended fuel. After ran hotshots Diesel extreme went long drive on intestate. It went back regen every 250 miles
I'm tempted to try something on this truck. i have a big road trip coming up next month.
I must have missed a vid or two cause I had just commented a couple vids back I was going to order the K&N with the PPE (I think is the name) pipe to run at the back cause the K&N one was a bad fit......now there is a complete different cold air intake system on all together....
I am often changing and testing. I still believe the Stock airbox and PPE Zilla pipe is the way to go. The K&N intake if you want the added sound. Here is the newest intake video: th-cam.com/video/d8T0w3dt63Y/w-d-xo.html
My 21 is bone stock besides wheels and tires that i added in the last 3K but I cant remember making it past 100 miles before a regen. I usually have them around 80 miles. my truck does fall into the camshaft cover TSB so maybe thats it.
Oh wow, so that's like 5-6 regens per tank ?!
do you feel like the new 3 liTer is better,equal or is better than the one in my 22' 1500? also how does the truck communicate when it is regen'en?
I feel it is better than the 22 LM2, I have a video on the changes to the engine. I also have a video on the regen. It would be a huge message to type up to answer, so hopefully these videos help. th-cam.com/video/dxPkKIX-4aM/w-d-xo.html th-cam.com/video/DVIgc_7e6BM/w-d-xo.html
Liqui Moly Diesel Particulate Filter Protector reduced my regens by quite a bit
What was your before and after?
2023 Sierra 1500 LZ0 completely stock except Banks iDash. I too noticed a recent drop in miles between regens from upper 200s down to 150-180. Given the range of modifications across everyone experiencing the issue, it seems like an update from GM or winter fuel to be the cause of the drop. I'm curious to see what you find out.
I regen about 3 times per tank. I drive a lot of in city miles. I get about 525-575 miles per tank.
How quickly are these regens completing? Those are some great fuel economy numbers for that many regens.
Is there such a thing as diesel supply switching from winter blend to summer blend being the culprit? I don't know. 23 with about 24,000 miles. Only had the banks idash for a few weeks averaging about 175 per regen. Unfortunately i dont have previous data to compare
Yes, I am unsure when that actually takes place but that is one thing to consider. In your case, your regens may have always been 175ish, that seems to be a possibility when comparing to others. In my case, I have always had 400ish regen intervals so this was out of the ordinary for me. Keep me informed if you see a change in your regen frequency.
Mine’s fully modified minus the S&B. (Stillen, K&N filter, carbonzilla, ppe charge air cooler) I’ve been averaging about 330 miles per regen but it recently dropped to 240. I’m not sure if the non winterized fuel is having that effect. I think that overall I’ve seen shorter regen cycle based on how I drive. I’m very light on the accelerator and I coast a lot. I feel like this lighter style of driving, which keeps my egt lower, is a big cause of my short cycle. I’m hoping the catch can will help alleviate that a bit, but I’m still waiting on mine.
I'm typically light on the accelerator as well, I have always had good range on my regens, 5 trucks now. So this one is odd.
@@DemonWorks I forgot to mention that I’m using diesel Kleen every fill up. I recently switched from the white winter bottle to the silver summer bottle now that we aren’t doing below freezing anymore. ‘24 AT4 LZ0 with 3,112 miles, with 49% def remaining. My history doesn’t show any software updates installed, so unless they stealth dropped something I don’t think that’s it.
23 LZO AT4. Are you running B20 or regular diesel #2? My truck regens too much on bio diesel so I stick to my local chevron station that has regular #2 diesel and fuel filter stays clean. Regens about once per tank and lasts about 15 miles. Regen stops at 30% always then goes down to 1% and slowly climb if I keep driving. It will climb fast for me after starting it cold and ive gone up 25-30% on a 30 minute hwy drive before, but sometimes it will only go up a couple percents on the same drive from cold. Recently I took a 4 hour trip to sand mountain and the truck seemed to love hill climbs. I left home at 60% dpf and at the top of the tahoe mountains it had gotten really hot during the climb and burned itself down to 55% 2 hours into the drive. Barely used any def on that trip. Regened on the way home and climbed up fast to 50%. It's very random.
#2 for me. Only the different diesel when I go on Road trips to cali, which hasn't happened in this truck yet.
@@DemonWorks The one nice thing about diesel in CA is a state requirement of a minimum cetane rating of 53. About the only thing nice i can think of right now:)
I switched from Hotshots to Archoil & I've seen 1+ more MPG gain. Bone stock 23 LZ0 & I'd guess I probably get a regen every 400 miles give or take slightly. Mostly highway miles in a 4x4 crew cab X31 getting around 700 miles to a tank so no complaints.
I see ads all over for the archoil in the past few months. That stuff is pricey !
I've used the archoil diesel fuel and oil additive since the second tank of fuel and the second oil change. Oil changes at 5k miles. Pricey ehh, maybe upfront but not really, when you break down the dosing and cost per dose. I'm going to keep running it. 2022 Crew cab LTZ Z71 6.6 bed. Hwy mpg at 60/65 is mid 30s, last road trip to Phoenix from Southern California I drove 85mph and averaged 31mpg that trip. Regen happens once a tank typically, 350 400 miles. 15k on the truck now.
@@DemonWorks Gotta pay for stuff that works or you could toss $ out the window on Hotshots. Pay a little more for results sounds like a better option to me hints why I made the switch.
@@BakoRick I only use the Archoil fuel additive so far. I was hesitant on the oil additive but wanted to use it. The 3.0 oil weight is picky & even has to be a specific type just for the LZ0 3.0 motor. I'd like to hear from others using it & if using it would void factory warranty.
I was a bit hesitant also, but I found no information that would suggest it could harm anything. It just adds a lot more lubricity and it doesn't change the viscosity, I know there is a potential risk with it but I have an extra extended warranty, I do with I had a data recorder installed from the very beginning so I could have seen if there was any change in DPF soot build up and regen frequency. @vanlifebiker
I am averaging about 180 to 200 miles for a regen. 2023 at4 stock. Sometimes it is a little higher if I tow.
Mine is much higher when I tow, those higher temps really help cook off the soot.
@DemonWorks I would like to add that I drive 2 miles to work everyday.( 4 miles round trip) and I have about 8700 miles on it so far.
I am fully stock, run hot shots secret since new, 3 months and my I-dash shows I am averaging 223 mile per regen. Current tank is going to regen in less than 160 miles. Going to stop the hot shots to see if it makes a difference.
Please keep me informed!
178 miles into this tank with no Hotshots EDT and my Idash says I am at 91% so it will probably start a regen in the next 20 miles. Will be putting about 2000 miles on my truck the next three days, I will keep track of the regens
Busy weekend put 1600 miles on the truck witout and additives and I have gone through 5 regens and I am currently at 80% on the last regen. The first regen that was with half treated and half untreated fuel my truck regened at 209 miles and the last full regen I had was 341 miles according to the Idash. I averaged about 73 mph for that 1600 miles and normally I average 40-45 mpg per tank so I will have to see if my mileage stays up. 341 is longest regen since new and I just rolled over 7k miles
First Tow report:
Mostly Stock 24 AT4 with: Stillen intake, 275/65/20 Load Range E K03's (put on just before this trip) Banks gauge
Pulled 6500 pounds of cargo and car on a hauler about 1000 miles (Civic on 2300# 16ft with dovetail) random crap in bed of truck
At start 1 bar on DEF Gauge empty
400 miles in, 2 bars down on DEF Gauge, warned about 1000 mile range
625 miles in, 2 bars down on DEF Gauge, warned about 380 miles of range (225 miles driven since warning about 1000 miles of range)
750 miles in, red DEF Gauge warning about 50 miles to reduced range (125 miles driven since last update) a regen was also taking place
Added 2.5 gallons of DEF, went to 2 bars empty on DEF Gauge, updated range to 380 miles of range
885 miles in, 3 bar empty DEF Gauge, received warning about 250 miles of range remaining (135 miles driven since last update), topped off DEF, took less than 2 gallons.
Range updated to 380 miles of range. DPF % never went above 1 the entire leg of this part of the trip. DPF % was always going down slowly from about 85% at the start to around 10% before a regen and warning about reduced speed happened at the same time.
Fuel economy was around 12-14 MPG (East Texas to Central NM) Never lacked power. Trans temps were high for long climbs or traffic (210F was highest)
EGT 1 - 1150F on long uphill sections, normally at 900-ish on level ground
EGT 2 - 1150F on long uphill sections, normally at 900-ish on level ground
EGT 1 - 1000F on long uphill sections, normally at 800-ish on level ground
She seems to run hot!
I wonder if the truck uses DEF during non-regens while in tow mode. Odd that the DPF was working downward as we pulled. Overall, like the truck. It has a bunch of annoyances though. I am thinking they could reset the stored settings and let it "relearn". MPG, DEF, so much all over the place. Add the random, "clean parking sensor" warning for a rear sensor, front camera warning about cleaning that abruptly turned off cruise control and then all of a sudden came back to working normally on to two TPMS sensors that would just randomly "disappear" while driving. Also, the "Gain settings were not recovered due to an error" at start up that happened most of the time.
GM needs to get rid of all of this software crap.
What computer software are you using in this video?
GM GDS2 Software with the MDI2, I'm a dealer tech.
Im a huge fan of your channel and I will be very curious to see what you conclude in the next few months - but I got to ask, are all these issues such as a higher initial investment, oil consumption that forces folks to spend $$ on larger oil pans or add oil in between changes, higher oil change costs, higher maintenance costs, insane DEF consumption and associated cost (especially while towing) etc. really worth the hassle vs. just pumping gas and go? Are you loving the LZ0 because you just want to love a diesel or is it really worth it when you look at the big picture? It would be great to see a vlog on your views “is it worth it” after your investments and having owned this truck for some months…… kind of “looking back, would I do it again” episode. Im still on the fence on engine option for the 2025 model year I hope to order.
I have been taking notes on a video similar to what you are asking about. Just you asking, shows that I need to put something out. Just so you know, this is my 5th 3.0 Duramax, I do love them but they come with some trade offs. I will do a video laying out everything I can on that.
Thanks - that would be great. Ive been waiting for the 2025 Tahoe Z71 or RST with 3.0L vs 6.2L. As far as I know the issues with the failing lifters and push rods are not as prevalent with 2024 gas engines (unless im wrong). Now Im not sure if the wait was worth it given that I do less than 10K miles per year so the higher price of gas and lower mpg is offset by these issues and higher cost.
@@kaivonmortazavi8656 DFM lifter failures are down from a couple of years ago, but it seems main bearing failures are up more recently. I am on the Tahoe/Yukon forum and there's been a handful of 6.2L owners reporting low mileage engines with spun main bearings. Interestingly no 5.3L owners spinning bearings so it seems to be isolated to the 6.2L.
Agree, I am in the same boat, asking myself “is it worth it.” I Like the looks of the GMC AT4 and I tow a boat quite a bit so would appreciate the torque of the diesel. As I read through the comments people are using additives and changing oil much more than I do in my gas vehicle.
One thing I notice on my lzo trail boss, if it loads up quickly, I have hooked up my 5k pound trailer and do a hard pull up the mtn it will drop back down to 10-20% without a regen, I also let it idle for 1-3 minutes when done driving and it usually drops 3-4%. I can smash the gas from a stop light and it will gain 3% but if I have a slow takeoff it it doesn’t gain much. Steady throttle changes seem to keep the regents longer.
I love the towing temps and seeing what it does to the soot ! I'm real steady on the throttle, so this sudden change is interesting.
@@DemonWorks good luck🍀!, hopefully you figure it out soon, nobody likes excessive regens!
Did your supplier recently change to Canadian Tar Sands source or maybe a different refiner ?
I couldn't say what the supplier is using. Possibility of change, but many people on here have been experiencing these same numbers, hopefully mine goes back to the way it was.
i got 488 miles on my last regen. But about half of those miles where pulling trailers. GM needs to come up with a better system that feeds the DEF Fluid. I've had my engine light come on about 3 or 4 times. But after a Regen it would go off by itself. Also at idol you can't stand at the back of the truck without tearing up with the pungent smell of Amonia gag you. My thought is the when i used to start my truck in the morning to warm up for about 5 minutes that the def system is like a 2 stroke motor, and loads up the engine with unnecessary Fluid when at idol. I think the system isn't calibrated with engine load if that makes any sense. What are your thoughts?
my better numbers were actually during the time when I was warming the truck up.
Hey guys, my Bank’s I dash numbers are Dpf% is either 0 or 328. It goes back and forth from time to time but I have never seen a gradual build up of the numbers on the dpf%. Is this normal? Is it supposed to build as you go?
Hey ! Definitely sounds incorrect. Lets verify a few things first. What year is your truck? What did you select for the vehicle in the banks idash?
Banks has a "Beta" firmware update for the iDash that corrects this. Call Bank's tech support number and they'll email you with a link to download the firmware.
My LZO does about 200 miles per regen. City vs. in town does not seem to make a difference. 100% stock truck, no additives, 9000 miles so far.
Almost 13k miles, Regen averages 180 miles. I fill it up with Hot shots EDT. Might try arch oil next. I do a lot of short tripping around town though, so I'm sure that hurts my average.
I installed a CFM Performance Baffled Billet Valve Cover Breather, what do you think about it?
You essentially bypassed the pcv system and now venting it to the atmosphere and under your hood. I would assume there will be an oil residue mess to follow. With the pcv system now unable to operate as designed, you won’t be pulling the oil and water vapors through the system and will now allow the vapors to just accumulate within the engine. It will be beneficial at very high rpms and crankcase pressures, but everywhere else, likely hurting the engine.
Do you use any fuel additives like hot shots edt
None currently, but also this is my 5th 3.0 Duramax and only one I ran some additives in for a short period.
I just buy a used LZ0 2023 with 40k miles, what I notice when I got home is that when I get the oil cap off with the engine running, there is white smoke coming out of the engine, is that normal? I don’t know if it’s serious as it just have 40k miles but nobody knows if the first owner took care of the truck or not
You will see that by design, all modern diesel engines will show that, this one is no exception. if you had excessive crankcase pressure, you would get a check engine light since there is a pressure sensor in the camshaft cover.
@@DemonWorks ohh great thanks so much man you’re a life savior, I think my engine was ruined 😅
150-160 mile regen cycle!regardless of highway or city driving.
23 LZO stock. No winter fuel this far south. Tried Hot Shots extreme - no changes. Started running Hot Shots daily - no changes.
I seen no change on my 23 LZ0 using Hotshot either. Switch to Achoil & I've seen about 1 more MPG. I also use Amsoil oil too which I didn't see much change but everyone brags on it.
Thanks for sharing the added info !
@@vanlifebiker I switched to amsoil as well, thinking I will go back to mob 1 next oil change. Only thing I noticed on the switch from factory fill was my oil temps dropped ~15 degrees!!
i own a 2023 silverado 1500 with 3.0 Duramax LZ0 with 8,500 miles and i have never notice a regen but is stock with no banks but people said they can tell by the smell when they have a regen not me no smell not notice any more diesel consumption I don't know .
check out this video where I talk about some things that will indicate the driver the truck is in regen. th-cam.com/video/DVIgc_7e6BM/w-d-xo.html
Could they have done an OTA update for emissions?
Possible! But i am leaning towards intake related since I was solid on my regens then this sudden change. Could have been a programming change as well though.
That’s crazy if it stays like that, I know it kills economy. Hopefully it changes soon 🙏🏽does cold weather affect it as well? Curious what the comments will have
Yeah, it came on quick. Hopefully it goes away!
my truck is an lz0 and I'm getting 3-4 regens per tank and its all stock
How quickly are these regens finishing up ?
Any updates or leads as to why these things are regenning so frequently all of a sudden? Seems like it happened to them all overnight...🧐
update going up tomorrow morning. (Wednesday 5/14) I have a lot to add.
Mine is the same. First 5000 miles was a full tank of def now a tank of def every 2 tanks of fuel, truck is stock
I just got past that 5000 mile mark ... ugh.
@@DemonWorks I've brought it in twice. They say nothing is wrong and to monitor. 30 dollars every 2 tanks is insane. Eating up the fuel savings of running a diesel.
2023 LZ0 11.5K bone stock. I average 160-180 miles between regens.
ugh ! I must have just been lucky in the beginning.
I will update my regen intervals once my runvse catch can arrives and is installed.
@@DemonWorksmy regens were in the 300 range when new. After 10k miles it dropped to 150-180
Regen yesterday at 174 miles. It lasted 13.5 miles at highway speeds. The root cause may very well be the dealer has new software that has to be flashed to the ECM. It addresses random CEL issues. I had mine flashed a month ago and the regens all been in between 160-180 miles. I am taking a 600+ mile round trip on Friday. I will report back what the regen was like on the trip. It will be 95% highway.
My truck doesnt notify me during a regen. Is that normal in the LM2’s?
Yes....The only way I know is by watching the MPG go down and the coolant temp go up.
Hey ! No notifications on the dash unless there is an issue. The idle RPM will go up but if you are driving on the freeway, you will likely only notice if you are watching the mpg on the cluster, like TakeDeadAim said.
Get the updates done and use amsoil oil and your regens will be much better
100% up to date and my prior 4 3.0's didn't have this frequent regens and I only ran amsoil once. I don't see the amsoil making any difference, but I appreciate the ideas !
@DemonWorks my lzo before updates with amsoil was 600+ miles between regens, now with updates same oil about 300 regens. With oem oil it was as frequent as 100-200 miles
What updates? How do you know if you need one?
@@robbynelson3you don’t know, it’s just if the tech checks for updates at the dealership.
@robbynelson3 if you have a code coming on, I forgot which one it is there's a software update for it.
Every two tanks of diesel, I need to put a jug of DEF in - that and the crank cover seal failure and dropping all my oil out of it - those are the only things odd about the truck lol
That sucks on the leak ! Have you seen my video on leaks? i bet it's more coming from the plug in the front : th-cam.com/video/HLhqwX_3ByI/w-d-xo.html
@@DemonWorks Ya i saw that - I will try to find your email and send you the pic - you can post it if you choose. They said it was the front of the crank cover seal. I dunno lol
No worries, As long as it’s fixed !
I took my CAI off and my regens went back up to 400 mile range
ugh, that's my fear as well.
@@DemonWorksmaybe other engines are the same. But these 3.0 have a mind of there own. From the fuel mileage to how some react to different parts.
B20 fuel recently? 🧐
Has to be a firmware update… my 2024 L5P has been doing the same
Thing. Bone stock. Just 2idash’s and petal monster. I run hot shots EDT every tank.
The engineer said it regens more times in the first 19000 miles the n it will between 19000 and the rest of the life of the truck the more miles you drive the less amount of regens happen I guess
I've had my '24 AT4 since the first of February and bought an iDash shortly after. I have logged my regen's since plugging in the iDash:
Regen start 625 miles (2/24/24)
Regen start 785 miles (2/29/24) (160)
Regen start 935 miles (3/4/24) (150)
Regen start 1117 miles (3/12/24) (182)
Regen start 1240 miles (3/13/24) (123)
Regen start 1476 miles (3/19/24) (236)
Regen start 1634 miles (4/2/24) (158)
Regen start 1803 miles (4/5/24) (169)
Regen start 1967 miles (4/8/24) (164)
Regen start 2198 miles (4/12/24) (231)
Regen start 2332 miles (4/17/24) (134)
Regen start 2576 miles (4/29/24) (244)
The number on the right is the miles between regen. Averaging about 177 miles. Duration takes approx. 10min from activation to completion (about 13 highway miles). Fuel economy is averaging right at 27mpg with mixed driving (low as 25mpg & high as 31mpg). Even during regen's, fuel economy is still 22-24mpg, but I am light on the pedal. I'm trusting that this is all normal GM programming... If you learn anything about the programming parameters or updates, please let us know.
I’m right about the same. 24 AT4 mostly highway. Way more regens than I expected. Also completely stock plus IDash.
Thanks for sharing data. Does all of the regens use more DEF?
@@chadclark5204 My understanding is that DEF usage is largely based off of fuel usage as a ratio. That ration may not be linear, but that's my best way to describe it. My experience so far with regen's has proven that the fuel penalty during a regen is very minor. The regen process is short (10 minutes) and my mpg's only drop 2-3 for that very short duration. With that, the DEF consumption due to a more frequent regen cycle is not even practically measurable. I have 2700 miles on my truck so far and have only used about a 1/4 tank of DEF. I've been light on the pedal and have not towed anything while I get some mileage on the new engine. Changed the oil at 800 miles and added the iDash. I run a maintenance amount of Power Services Diesel Kleen fuel additive to simply keep things clean and lubricated and it gives my OCD brain some peace. So far, I am very pleased with this 3.0 and 10spd drivetrain.
@@nathanstamper3348 thank you sir, that is good insight.
I have a 2021 gmc lm2 it’s regend once I’m the 102000 miles I’ve owned it I do tow a lot and it’s bone stock
A regen will for sure happen at least once per fillup, it sounds like yours are so smooth they aren't noticed and that's great !
@@DemonWorks only one time did it show the regen keep driving and the only problem if had with the truck was the def temperature Sencer I figured I’d reach out to my findings because my truck probably has more miles the most lm2 duramaxs on the road
@@Farmerboy4630that just means it was having a hard time completing. The regen process is meant to take place and not tell you every time. Unless you have aftermarket gauges to tell you.
To regen that much! You are burning oil or antifreeze
many have reported the same regen amounts, I just started. I agree that would be the assumption and the catch can I installed will help see what I am consuming as far as oil goes. I am leaning towards it being related to the intake.
Easy fix, delete emissions. I know I know, it voids the warranty… but seriously, I just a 22’ trail boss with the 3.0L and I’m definitely deleting it the second it hits 100k miles.
Your fancy catch can is affecting the basic diesel engineering operating conditions. TAKE THAT THING OFF!
Please elaborate on said "basic diesel engineering operating conditions" ...
I just installed mine yesterday, i’ll report back in two to three days and see if it affects regen, it should be extended because the engine will no longer burn oil.
You guys messing with factory are fools! Waste of time watching this bs
Thanks for watching !