UPDATE - Too Frequent Regens - Intake / OTA Update / Fuel ?
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- เผยแพร่เมื่อ 13 พ.ค. 2024
- Update video for those that asked about my 3.0 Duramax with too frequent of regens. We thought it was caused by the S&B intake, but that doesn't appear to be the cause. I looked into an update to the ecm via an over the air update, not the case. lastly, maybe a switch from winterized fuel to #2 diesel? I went ahead and did a small quantity fuel adjustment reset.
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The problem with seeing all that data is kinda like seeing how the sausage is made....sometimes it's just TMI. I've got just over 82k on my 2020 Mini Max and it's 100% OEM still running just fine and never seen the inside of a dealership garage.
I appreciate your continued viewership and comments !
Thanks for the update demon! I know myself and a ton of others have been watching this closely since you first brought it to our attention.
At least my Big Brother paranoia about OTA updates was shutdown. Always nice to be humbled by OBJECTIVE evidence instead of the forum of popularity. Thank you Demonworks.
So this just started on my 24 LZ0… it actually went into limp mode (it never alerted me to “keep driving”). After a trip to the dealership to do a forced regen, I decided to get the Banks idash. 75 miles later, and it’s doing another regen! It’s doing them about every 100 miles or so now. I have 3500 miles on the engine. Stock.
I think you have an actual issue and I am assuming your dpf will clog up again and need some diagnosis to find the cause of that. If it gets so bad that it kicks you into limp mode, there is a greater issue.
Thank you my guy appreciate your knowledge
Appreciate your data!
Bought a new 2024 Sierra 1500 AT4. I've had the truck for 2 weeks, 750 miles. Completely stock with an Idash Super Gauge, and Hot Shots EDT. Averaging 127 miles between regens.
As per my last post to your previous post. I'm basically sitting where I was as far as regens, 2 since my last post 192 miles and 196 miles respectively, so I'm still sitting in the 190-200 mile avg range since new. I watch the regen as its happening on every one, last regen was different than previous ones in that normally regen shuts off at ~28% SL, last regen lasted longer and didn't shut off until 7% SL. As far as after, it started going up just as quick as the others kind of hung in the 50% range for longer than usual. I don't expect to see any diff however. As far as fuel, typically winterized fuel would have a lower BTU/#/gallon rating than straight #2 diesel, however the cetane level would be higher in winterized fuel ( Typical cetane ratings for No. 2 diesel would be 46 - 48. No. 1 diesel is usually about 51 - 53) Which would equate to the #1 fuel being faster and cleaner burning, however less MPG due to the lower BTU rating. So you theory about fuel does hold some value. A test may be add 5 gallon of kerosene per tank (if you can find some locally) and do that for a couple of tanks and see what happens to your regen mileage. I do find it conceivable that the differences could be attributed to all the sensors information is derived from, the validity of said data and how the software interprets that data. Just my $.02 worth......In the end I'm so far still pleased with my baby Duramax, I've had 2 of the big brother an LMM (wish I would have kept that one) and an LML (only issue with it was 3 DEF tank heater failures).
Thank you for your videos, i have a 2023 gmc elevation with the 3.0. I got it mostly for towing, however my towing is short distance, 2 to 7 miles, 15 times a day. Pulling approximately 4k. When the truck was new, i didn't tow for about 800 miles to break it in, i only had 2 regens, i have a Banks data monster also.
Now my regens are occurring every 2 days, between 60 and 90 miles.
I don't like to keep shutting off the truck during regen so i put it in low and don't go any higher than 4th, keeping the rpms around 2500. I can do a complete regen in 4 to 5 miles at 25 to 30 mph. However, after regen, the soot load rises to 40% very quickly either towing or even on the highway empty.
I'm very happy with this truck , my mpg short distance towing is fantastic at 18 to 21 mpg and I'm still getting 35+ on the highway!
I have 3500 miles on the truck.
I have owned diesels before, a Datsun 2.0 and a Dodge 5.9 Cummins.
Thanks for this update. I am picking up my 3.0 this Friday! Had to get the max tow package with mine, to bad the zr2 didn't come with 3.73 gears or I would of gotten that one.
My 2024 3.0 has 1800 miles on it and it just dropped the def bar from 1 bar to 2 bars used , I live in Florida and I think all our diesel is number 2 I’ve filled up around 3 1/2 times my best has been 40 mpg at around 55 mph but I was trying to see how high I could get it ,and have been averaging a little under 30 mpg I have no aftermarket parts a 2WD lt with 18” rims driving on all flat ground only hauling about 600 pounds haven’t towed anything yet so maybe that’s why my mpg is so good at this rate I will be filling the def well after a 5000 mile oil change I also use the ac delco diesel additive every other fill up love the videos I’m gonna get the I dash and see how much it’s regen love the videos thx for sharing your knowledge I appreciate it
Appreciate the videos and the effort to isolate the source of frequent regens. Im averaging 160 miles between regens in a 24 AT4 3.0L. Im at 4000 miles, and the 160 miles between regens has been consistent.
Do you think that the type of driving can effect regen frequency. My daily drive commute is only 6 miles each way. Ill tack on some additional milage during the week running errands but they are all short trips. I've got an iDash, and though i know its not necessary, if i hit a regen on one of these shorter runs i continue to drive until the regen compltetes. On weekends I go out for 30 - 60 mile drives. No towing.
My engine is stock. I do add 1oz of Hotshots EDT every fillup. Where i live in NC rarely ever hits single digit temps so no idea if we get winterized diesel.
Would using the iDash (or more advanced scantools) to check injector balance rates be of any use to see if the small quantity is out of spec? What are the normal balance rates for the LM2 and LZ0?
I have completely stock 2023 LZ0 with currently 15k miles. According to my diagnostic computer, I have had 34 regens during the life of the truck so for which is around 400-440 miles per regen, but after I saw the video I did a couple checks and now it looks to be running around 200 miles per regen but it's still keeping average regen time around 10 minutes to complete. I run this truck 100 miles a day 5 days a week and still stay around an average of 27.5 mpg. I will keep monitoring to see if stays consistent or continues to fall. Not sure if this will help but at least it's more information for everything to chew on.
i don't have the Banks, but typically can tell when a regen is in progress from the smell and or the rpm being at 900 at idle and I am also doing very frequent regens, last time it was 60-70 miles and prior to that it was less than 100 miles, basically it did a regen every couple of days.
I think I'll keep my 2021 GMC AT4. 61,xxx and no complaints. 22 mpg for the total miles! Pulling, City, interstate, and 2 track USFS roads! Stock.
My comment as per winter vs summer diesel goes back years ago so no doubt slightly different fuel components and the engines had a much lower injection pressure. It was said that diesels that did a lot of idling and short spurts of work and then sat there idling again day in and day out ran better on winter fuel all year around because the fuel burned more efficiently/completely at the low EGT no load type use where as they would smoke and slobber more with summer fuel. Of course there was no DPF back then but do have to wonder if even these engines of today have a slightly different burn characteristic and create more or less soot depending on the type of fuel being burned.
Weird just got my 2024 GMC 1500 SLT lzo, 800 miles no Regen, even my Regen gauge hasn't moved.
At the end of your video you mentioned catch. Can I have a 2024 GMC LZO? What would you recommend if I may ask??
I have a 2024 trail boss with the 3.0. I have about 8000 km on it and I have burned about 3 gallons of def. Not sure why some trucks burn so much. Btw it just did 6.6L/100km on a short trip of 360km. Incredible fuel efficiency with cruise set at 100kph. I live in Northwestern Ontario so our speed limits are lower
Just made a trip from KC to Dallas 530 miles and had 3 regens. Running 2024 1500 AT4 stock. Hope you find the issue.
I have been saying the same thing for 4 months when it comes to “Regen premature issues”.. My “23 Chevy Silverado 1500 having the 3.0L - LZ0, is doing this same similar regen “mode” every 120-140 miles as far as I have seen, since I have got the truck most likely too, back in Dec of last year, and therefore noticed it in particular just after I installed the iDash, while being able to see it when it starts the regen mode of course. Although my truck’s regen does not last more than 11 miles to 14 miles as far as I have seen too, but the repetition of these cycles is what concerned me in the beginning, since I thought that is not normal at all, but now since I have over 12000 miles on board, then I am not that concerned with this idea anymore.. It seems to work just fine each and every time.. Not sure why, but it appears like numerous other people complained the same thing too, while having to many regens at a very low miles in between them, at or around 100+ miles.. I also still have all stock “applications“ on my truck, and without any modifications so far, and therefore nothing truly changed to my engine so far, in order to have more doubts when it comes to this regen issues.. However, I use the Lucas additive for diesel engines most of the time when I fill up my truck, and since this is a little improvement to the diesel fuel into my tank, lubrication, as well as mileage per gallon, while I add just a little bit each and every time, then all I can tell is that the engine sound pretty nice all the time while running.. I would assume that the Lucas Additive would have nothing to do with the regen mode most likely, but that is just my opinion.. I actually use Lucas Additive for many many years and never ever got any issues so far, with any of my previous 3 Rams 2500’s while having 6.7L Cummins, including this Chevy Silverado 1500 pickup truck while I bought it brand new.. Cheers!!
Dang 700miles before draining the VSE catch can. I only get 500 miles out of mine before it is full. It holds about 250ml when it starts showing on the sight glass. Which is on par with my oil consumption rate of 1qt per 2000 miles.
Thanks for content. Any updates?
I'm close to providing an update!
I have 23 Chevy TrailBoss with 25,000 miles, Since leaving the Dealer he always makes his regens between 180 to 200 miles between each one, and I have never had problems with it except for the reverse camera that does not show the lines, and an hourglass appears as if the system were thinking
What scan tool you use? Is there other options on scanners to use.
I would like to know as well please. Especially if a reset/relearn fixes things. I hate that I used to get 30mpg when the truck was breaking on the highway. Which was supposed to be getting worse fuel mileage until broken in and now I'm at 27k miles getting 21-23 mpg on the highway. So it definitely went the other way. I'm on a 23 at4. And I haven't gotten a ota since July maybe August of 23. And history was showing before then I was getting one every 2 maybe 3 months. It's almost like the 24th came out so they stopped updating the 23s..
And don't the updates only patch software for the infotainment unit and things like autopilot cruise control ECT. Things like engine flashing have to be done by the dealer?
I will answer the scantool question in a little bit, this one is for the OTA updates. It is my understanding the OTA updates are only for infotainment related updates but since a few people had also asked about the possibility of an OTA update coming through, I wanted to make certain it didn't happen, GM is capable of anything at this point... especially with so many people reporting the same thing as I am all at the same time.
Recently I’ve been seeing a thing around the internet where people are saying to go into manual and run the truck in 7th gear at highway speeds during regen. Supposedly the higher exhaust flow cleans out the filter better and results in a longer cycle, and also eliminates that mysterious jump from low percentage back up to ~50%.
Thoughts on this procedure? Have you tried this? I typically hit back roads and go 45 during regen to save my fuel mileage, but I’m seeing about 200 miles per regen also now.
I am not onboard with that idea, I understand the thought process but typically more RPM will actually help decrease egt versus lugging. I think no matter what, the system will get the temps it wants. As for the quick to 50%, mine varies on that.
If you want to get a diesel hot you lug the motor. More rpm puts more air through the engine which can lower egt. I don’t think your idea would work unless you were under load.
I’ve played around with this: i’ve found keeping rpm around or above 2k rpm quickens the regen from 12-14min to 8-10min
@@RobVarley not my idea, just what I’ve seen some people swear by online. I don’t agree with it myself, I was just asking opinion of others.
@@DemonWorks I’ve seen that the system def gets the temp that it wants no matter what, based on different driving conditions. But so far I’ve stuck with my normal routine when possible. If I’m in the middle of a trip I just let it regen, but if it hits near home like it often does then I take a big loop around the country block at 45 and let it do its thing that way. Mine doesn’t always jump right back up, but it seems that regardless of what it’s at after finishing a trip with a regen, the next trip it will quickly jump up to 45-55% after it’s warms up.
So I am looking at buying a Chevy Trail Boss or RST etc with 3.0 in it. Do I need to buy one of these trucks or do I buy a 3/4 6.6 gas burner?
What is your intended use? 2 very different trucks.
Is the over the air update pushed and installed automatically? Can you do an update on the regen GREAT videos!
OTA updates will come from gm to your vehicle automatically. They are typically infotainment related only and I do not believe they will do ecm updates, but since I am not 100% certain, I wanted to check mine and answer that question for the others that asked about it being a possibility.
You should do a banks gauge set TH-cam I’m looking to get 2 of them and it would be nice to know
What to have each on set on. Thanks
I second that. The dam short abbreviations make it hard to know exactly what they are, let alone which ones we should be actually worried about (monitoring). I’ve guessed on my one gage set up but would love to hear others and what they monitor and why. I bought mine mainly for when I’m towing. Also the old software had a forced regen option, that’s gone now. Would love that back so I can trip it when I’m driving. Seems my Regens come when I’m on my way home. lol
@@hammer-r when I bought my truck I noticed it regenerated way to much my f250 power stroke didn’t regen like these do so I did little research and through some hotshot extreme in it and it stopped it completely and I’ve been using hotshot EDT treatment every fillup
@@user-ju7hy4df1q Tks for that, yea I’ve been using hot shots most of the time and my Regens on highway driving are about 300-400 miles apart. When doing mainly local driving, then it’s around 150-200 miles. But I blame the short trips. Tks.
Hmmmmmm
Sounds like the intake was causing one of two things due to the MAF location and changes in flow
a “rich” situation resulting in more soot in the DPF
A lean situation would cause high EGT’s and those high EGT’s being recognized as a regen (maybe?)
Recommend monitoring AF ratios and AF learning (if possible), maybe put it on a dyno and replicate normal driving with and without the intake and take note of the AF and EGT changes
Rule of thumb for all my forced induction vehicles is to not mess with intakes and downpipes without a proper tune. But I also have the tendency to go all out with speed density tuning and deleting all emissions equipment on my projects 😂
Are you using oil . If you are valve cover is cracked and oil is being burnt so more reg..
Is it possible the dpf isn’t getting cleaned completely and you’ve got a faulty system?
I'm pretty confident my dpf is completing the regen completely, I can watch the soot mass with the idash. i think there is just something else causing the quicker regens at the moment.
Man i just put the thing in drive and change the oil every 5k
Nothing wrong with that, but if I did the same, you wouldn’t have anything to watch and comment on.
@@DemonWorks That’s so true. Keep it up my man.
The conspiracy theorist in me says it's the fuel. Things happening outside of our borders, US production is at a peak, domestic demand is high, global crude price is relatively low.. are the refineries and brands making #2 as cheaply as possible to stretch the supply?
There is no meaningful advantage to a modern diesel in a 1500. Imo
It's a high demand engine option, lucky for you, there are others available for you.
Of course there’s an advantage.
30 mpg in a 4x4 Crew Cab isn't an advantage? 😂 Not to mention diesel is cheaper than gas again. 🤣 Keep driving a gas truck. Nothing to see here...
@@vanlifebiker plus it tows better. Lol.
@@BC_Hunter Better than the 6.2 even. 👍