Brrr! Cold Start w/2023 Chevy Silverado 3.0L LZO Duramax Diesel
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- เผยแพร่เมื่อ 18 ธ.ค. 2022
- How long does it take for the 2023 Chevy Silverado 3.0L LZO Duramax diesel to start in below freezing temps? We put the truck to the test to see just how hard it is to start as well as how long it takes to warm up.
#duramaxdiesel #chevysilverado
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My 22' AT4 Duramax 3.0L starts up just like that at -30C. (-22F) without issue. I considered the Tundra as I was coming from a Tacoma but very happy with my AT4.
Good to read. What city and state are you in, and have you ever plugged it in?
My experiences
Ecm controls idle at 1000rpm until reaches 80°
Kicks to 900-950rpm until 95-100°.
Auto climate control starts to flow warm coolant to cabin heater core at around 80°
700-750RPM at 120-165° coolant valve directs more warm coolant inside, noticeably warmer
180-220° peak ideal operating temp engine really smooths out and full range of hot/cool interior temps.
2022.5 and newer there is no longer an option in the menus to increase idle. It’s all ECM.
(Banks Data monster reading coolant sensors)
Always amazed me how that tech improved from diesels of old where you needed to wait upwards of 30 seconds sometimes for the glow plugs to heat up before you could effectively start it.
We had -21C yesterday & -25C today. On my Sierra Elevation 3.0 it started right up & I gave it 10minutes before heading out this morning and it was ready to go, after I brushed 2” of snow off. 5000 kilometres and so far it’s amazing! The seat & steering wheel heaters are hot & very welcome!
Its a nice truck but as far as being a reliable as the 5.7 iforce ...I wouldn't count on it but it may be as reliable as the new Tundra with 3.5 Twin turbos. I've talked to a military girl who had one with this engine with over 20K miles at the time and she said so far so good with it and that she loves the fuel mileage she gets with it.
@@dalephillips8250 who mentioned the iforce? And why try to claim anything about the reliability of a brand new motor that burns a different fuel? Are you a Toyota plant?
@@gill998 I believe he mentioned it in the video
@@dalephillips8250 Toyota always had solid motors, but honestly even if this one only lasts 3/4 what the 5.7 does, the amount you’d save on fuel would more than makeup for the life difference. The 5.7 is reliable, but man does it burn some gas
I have a 2022 with a 3.0 lm2. I live in central Alberta Canada and it gets cold. I'm just discovering how these diesels handle these temperatures. The last couple days have been -25 C or -13 F and this morning started up with no issues. Tonight as I speak it is -32 c and yes tonight I plugged it in for the first time. I have no doubts it will start up fine. Also I find within the remote start 10 minute run is plenty to defrost the windows and get on the way.
I remember my dad firing up his late 90’s 7.3 power stroke at a hotel without being plugged in at -30 and had to wait a long time for the glow light and she did pop off and boy oh boy the sounds it was making ha
My 21 Ecodiesel starts at temperatures it has no business doing so. And it's quiet. No weird mechanical noises or performance issues. Modern diesels are really something.
Thursdays gonna be brutal for most of the country 🥶 It’ll be a good test for the kibitz at the farm 🤙🏽
Thanks Tim! Started up quite nicely.... I alway's let my 2018 GMC 2500HD Denali 6.6 Duramax warm up five to ten minutes which is typical during the winter months.... Good practice. Thanks again. 👍
I always take living in Central CA for granted until I watch a video like this. We think 30 degrees is the end of the world, fortunately only drops that low a couple times a year.
agreed. Considering both so comparisons would be awesome
I want to buy one one day so these videos help on how to operate
I have owned Ram (Cummins) for several years. While I don’t live in an area where the block heater is normally “required”, I still use it at home on a timer. I have it set to come on for 2-3 hours before I leave for work every day when overnight temps are in the 20’s.
As far as this truck not having fuel gelling issues as you mentioned, that would be more a function of the fuel suppliers vs the truck features or capabilities.
Fuel heaters maybe? It's surprisingly difficult to find info on if the trucks have them, but they would be an example of a truck specific system that would reduce gelling.
I only use the block heater on my 6.6l duramax below -20c, but it has started fine at -25c without it and I've never used a fuel additive. The block heater on the truck supposedly will only run if the temp is under -18c.
@@gill998 Ram has used heaters in the filter housing mount on their 6.7 trucks. Those are only going to be operating when the truck is running, though. I still maintain that properly treated fuel is the only way to protect against gelling.
Love that truck
Love your new truck Tim, I would love to have one. But I’m 67,000 short😀😂
LOL. Yeah, they aren't cheap.
Beautiful truck
Tim, great video! Really surprised so far on this diesels characteristics. Thanks to you and your subject content your changing this old guys opinion on diesels. Still saying the hell with electric (battery) vehicles. Looking forward to your towing test and summer mpg. Would love to see a hydrogen burning IC engine but we do need some infrastructure first. Especially out in those boonies where you live.
I lol'd at Gun
-18f this morning then -10f for a high today and my diesel colorado started right up after sitting for three day. Doesn’t need to be plugged in but it does help the engine.
Nice info. Yah, modern diesel should be performing as you demonstrated. Only real concern is the diesel gelling. So, add the additive and good for the winter. Merci
I got mine back in July so I have the older generation but mines been starting with blended fuel. I also drove it the other day on icy roads and for about 40 miles. I was getting 44 miles to the gallon which was unbelievable. I doubt I’ll ever see that again, great truck. I’m happy with it. I live in South Dakota. We’re going to have 50 below windchill’s here we will see how it works.
Yeah, that forecast is nuts. I'm not leaving the house!
I was told to only start the truck, let it run for a minute or two, and then just drive it. That the EGR will kick in and help get the engine up to temp faster and that there was no need to sit there idling. So far that seems to work. And you are right the Ram has something come on the screen saying there is a cab preheat that kicks in to get the cab warmed up faster.
What about the trans? I would always let run for at least a few mins
Its starts just as good as my 5.3 did. My lm2 fires right up
Was it you or Jill that put the disclaimer in about the thermal? Either way, smart move for the analytics.
It's great to see how much diesel technology has advanced. It's something not really thought about. Thanks for showing this.
Keep a lookout for the dead battery dilemma. When the truck has an update and cannot continue, it will drain the battery and not let you know. In the dealership now to get it fixed.
One thing I just learned, would have been good to add for states that can....with GM vehicles with remote start...after starting your GM vehicle, after 30 seconds, Press the lock button twice and hold down the remote start button until the lights flash...this will extend your warm up time to 30 minutes. I have an 09 Silverado and it works.
I have an 05 pathfinder se off road that in the winter is like a frigging diesel! Wants warmed up in the winter at least 5 min.
Nice cold start
Thanks for being such a loyal fan.
All those bells and whistles God forbid the BCM goes crazy
Great video
Glad you enjoyed it
Started my 3.0 Dmax in 9 degrees and it started like a gas engine. Didn’t plug it in because owners manual says the block heater thermostat doesn’t come on until -10 or colder! Most important thing is to add Power Service so you don’t gel up your diesel fuel. I have done that before and that’ll leave you stranded.
At what temp do you add Power Service?
@@bhouse4322 any temps below 20F.
@@hahaadventures4838 Thanks for the info. I’m new to diesel but live in SoCal. I guess I won’t need any of that.
@@bhouse4322 if you’re not below freezing temps I wouldn’t event think about it, except for pump lubrication. Find a good additive for cetane boost and pump lubricant and definitely run that every tank!
Although I am a big Toyota fan and I own a 21 Tundra, I regard the Chevy/GMC 1500 trucks with the 3.0L Diesel to be the best overall half ton pickup trucks. The one thing I do not like about GM trucks is the pricing of the additional features you have to pay for. I think Tim mentioned that he does not have an adaptive cruise control and he has the highest trim - that does not make sense to me - it should come with the adaptive cruise.
I am a big Toyota fan as well ( the family and I bought 6 Toyota's since 2017) I traded in a 2017 Tundra for a 23 AT4 with the LZ0, this is my first GM and first vehicle that isn't a Toyota. I did look at the new Tundra but I always wanted to try out a diesel and LOVE the MPG I get on the 3L and this was my opportunity to get one and so far so good. I just HOPE this is as reliable as the Tundra, fingers crossed! :)
Tim's truck doesn't have Heads Up Display either.
I’d prefer not to have adaptive cruise control. It’s available if you’d like to purchase it. If it was standard, the vehicle price would be higher.
The adaptive cruise control probably was a part that was in shortage. The medium and high trims all are included with adaptive cruise control mostly when parts are available.
They do come with adaptive cruise with a high trim because I have a Denali. He must not know what he is talking about
On the previous model, they said no need to plug it in unless it was below zero, some people who did plug it in when it was warmer ran into the problem that the truck would come on and kick on the fans full blast and occasionally throw a code. Not sure if it’s something they fixed with the new engine
I have a 21 with 3.0 and it has a option for rapid heat-elevated idle but to my knowledge it doesn’t actually do anything it was never programmed to function.
On my 2021 LM2, It talks about plugging them in inside your 3.0L Duramax Diesel Engine Supplement manual just for the engine. It says to plug it in when its at or below 0 F. High Idle setting would be under comfort and convenience on the 2021, and it doesn't change idle at all.
Be sure to use a quality anti-gel treatment. Hard to pump through a gelled line or injector. The HPFP’s stay fully lubed (by fuel!) when flow into that HP pump is normal (not partial due to part gelation of a line/inline filter).
I'm interested in diesels but have never had one myself yet. What does the GM manual for this truck say about using anti-gel additives in this truck?
You're probably wrong, on the main menu there was a scroll indicator on the left that shows you should have a number of other settings at the bottom but you didn't scroll it down. My 21 RST has the setting but it doesn't seem to do anything, or it hasn't gotten cold enough here in MD to activate it, referring to high idle.
6 degree that is -14 degree Celsius. we get -40 here in winter in Canada and to my knowledge it should start without the block heater.
Tim my Colorado diesel has an electric grid heater built into the heating system that turns on when you set the heat to max. I set it to max when I get home and auto start the truck in the morning. The electric heater clears the windshield as it’s warming up. Then as I drive to work the diesel starts to warm up and I turn the heat down and the electric heat turns off and the engine provides heat like a gas vehicle. Yours probably has it to. GM builds this electric grid into the heater system so you don’t have to wait to get heat from the engine. That’s why you felt warm air on the windshield before there was any real heat in the engine.
You also have a valve that directs all engine coolant from the engine head to the heater core not the rad until the engine gets warm.
Again put some puertorican 151 rum and it will go wild on the cold or summer... btw that dashboard is very nice looking...graphics a beauty..enjoy!!
I remember back in the 80's that I had to wait for a good while for the glow plugs to heat up in my girlfriend's VW car before I could even start it. Not sure what changed, but I guess that waiting for glow plugs to heat up isn't an issue anymore? I hated that car and got a new girlfriend that wouldn't nag me for not waiting to make her glow plugs heat up.
1. Your engine was already high idling at 1k rpm where normal idle is just 600-700rpm because diesels don’t normal idle high on start up like a gas engine does, they just start and idle at the lowest rpm possible.
2. You still had more setting if you scrolled down
If it's like my 2006 vw Jetta diesel that I own. There was a heater element in the dash to help warm the vehicle.
Some of the semi's I've driven you could use the cruise control to idle up the engine.
Was just looking at the 2023 manual to find the Engine Heater. It states If equipped, the engine heater can provide easier starting and better fuel economy during engine warm-up in cold weather conditions at or below -18 degree C (0 degree F) . Vehicles with an engine heater should be plugged in at least four hours before starting. An internal thermostat in the plug-end of the cord may exist, which will prevent engine heater operation at temperatures above -18 degree C (0 degree F).
This 👍🏼. People don’t read the users manual or assume because “mine” does it “yours” must. The refreshed trucks changed a lot of things besides the interior. Heck the moving the Def tank to under the frame and fill neck with the fuel neck was a no brainer
I read that as well. I'll see if I can do a video on that later this week when the daytime high is -5 degrees.
The RAM ED has a supplemental electric heat system (as you mentioned). I notice when I remote start and get into the cab, I can feel warm air even though the engine isn't that warm. I'd be surprised if GM didn't include the same or some work-a-like.
To my knowledge, I could easily be wrong, but at least the 2500s don't have an electric heat system, but there is a smaller secondary coolant loop that warms up quicker than the main, that the truck pulls its heat from. A secondary electric heat system only makes sense tho and I've often thought they should exist.
The GM 1500 diesel does have an electric heater in the HVAC system.
No gelling issues but i have had the key fob disconnect. I put it beside the key button and it reset with the infared.
There is a high idle on my 20 3.0. and it's access thru the settings menu on infotainment
I don’t plug in my LM2 unless it goes below -4F
I never use anti-gel
I only use the remote start if there’s snow on the truck
And start driving within 2-3 minutes
I have full heat within 5 minutes after leaving the driveway
That’s exactly what I wanted to know. How fast gets heat driving. Thanks!
Yes, some, once engine heater is plug in the fan on some will peak out once it’s started. If this happen turnoff immediately and restart after a good bit. 2023 3.0L duramax diesel engine supplement, saying 0° to plug in.
I believe the “elevated idle” is automatic now. Because when you first started the truck it was around 1,100rpm, on a 2500 it does have the switch to turn it on and off and when it’s on its elevated to 1,100 just like the 3L
Most diesels aren't fond of starting below 0 Fahrenheit. My 09 duramax starts right up with 1 cycle of glow plugs, not plugged in and 1 minute at idle to let the oil circulate, them baby it until it warms up
That's funny.. we're sitting at -39° c. My Dodge caravan starts.. just , but start's
And don't forget Winter Diesel is thinner and you will get lower fuel economy....also i would keep a bottle of emergency anti-gel if you live in cold cold climate. You could get your self into trouble if you fill up in Florida and drive up to North Dakota and don't fuel up with the winter diesel. The high idle is a good thing to have up here in Canada! plugging in i found only gets heat into the cab quicker any diesel will start in cold climate because of glow plugs.
I never plugged mine in unless the temp dropped below 0.
LOL
-7 IS NOT COLD
It was -47 last night here in Saskatoon,Saskatchewan and you should be doing this kind of test in ACTUAL cold weather and not when it is just mild fridge temperature at -7
Go to settings/Vehicle/Climate and air quality and at the bottom you will see rapid heat elevated idle. This is on my 2020 High Country Duramax.
Nope. Not there anymore.
It’s been low 30s here in So cal. And we complain 😂
Under climate in settings you can turn on elevated idle
Nope. I’m looking at it right now and there’s nothing about idle under climate,
I also wonder about the corrosion status on the undercarriage.
Hi Tim, I have a 2020 GMC w/ the 3 liter diesel. Under the climate and air quality setting I have a “rapid heat-elevated idle “ setting. I have it turned on but have never seen or heard the engine idle higher then normal. I live in the N east and have had single digit days and truck always starts. Looking forward to more reviews on the truck.
Nope. Doesn’t exist anymore.
I wonder if GM is removing the rapid heat-elevated idle through OTA updates. I, too, had this option on my 2021 3.0 Duramax under climate and air quality settings, but I looked today and it's gone. I recently had an OTA update, so thinking they might have removed the setting.
you should start the Tundra and Silverado and use the temp gun on air coming from the vent's. Time difference on warm up from gas -Diesel? Very important for us guys that live in real winter temp's.
That's an interesting idea.
Coming from a Ford 5.4 I can’t say I notice a big difference. It is nice the new truck has the seat & steering wheel heaters! They’re wicked hot!
Trick for windows is hit unlock button twice and hold down a few seconds all windows should drop. 👍
Your dash unit should have a ‘searchable’ owners manual as one of the first level options
It is not a first level option, but it is there. Nothing about high idle.
7yrs in North Pole Alaska....-60F plugged in or not truck didn't like me or the cold very much...lol
LOL at you Tim who thinks that +7*F is cold! -40 is cold….
My 23 3.0 RST has had the fan running on high as you said when the block heater is used with the remote stop. It’s really annoying. People I work with can hear me coming and ask what the hell is wrong with my truck.
So 6.6 diesel has more oil, block etc to get warm, so 2x as large I would not be surprised, plus tuning of the engine I am sure at sart up the egr is dumping exhaust back into the intake to help warm the engine quicker
The block heater in new gmc trucks (my 21 3500 specifically) doesn’t kick in until -15c. Plugged in -40c the truck has no issues starting, but it also has 2 battery warmers. The truck will high idle on its own but I can manually set the high idle by engaging the park brake then hit the cruise control toggle on the wheel and it will kick into high idle manually.
I've plugged my 2500 in at 15f (-9c) and it definitely worked. It didn't need it or anything but I was curious so tried it.
It’s not the best video but here’s a cold start video of my truck in -35 after sitting for a week.
th-cam.com/video/Q4cxuZ4IIfU/w-d-xo.html
@@R3lyc cool, thanks... Quick question: does the grill cover actually help? I understand that in years past they are absolutely necessary but current gen has active grill shutters and should be programmed to accomplish the exact same thing. I just assumed the cover was included to keep old school diesel owners happy.
@@samgford my opinion is it absolutely helps. In -35 city driving the truck has a hard time keeping the engine warm without it, the active shutters do block a lot of airflow but not as good as with the cover. The GMC manual recommends using it after -5c. I believe. The grill cover also protects the active grill from the elements such as excessive snow or ice that could potentially freeze and/or obstruct the proper function of that grill shutter system.
My 2021 has a setting for a high idle for faster warm up.
If there was any extended warranty that would cover the exhaust system, then I would be first in line. The cost of those potential problems is scary. Due to cost of diesel vs gas in the south, it only saves a couple hundred dollars a year in fuel costs.
I’d always plug in. I prefer plugging in gasoline engines when it drops below 30 degrees.
Now if the manufacturer would design seat heaters to run full time… then use the plug in block heater to also provide electricity to the heated seats, steering wheel etc. This would prewarm the cab without the need to run the engine.
It’s going to be a lot easier on the engine if you plug it in at anything under25 …I would think. Might as well use the befits it comes with.
Per users manual on these trucks the block heaters thermostat will not activate unless the ambient temperature is zero
You can plug the block heater into the wall but nothing will happen until the outside temperature is zero
I have been plugging mine in whenever it is 5 degrees or less. I usually plug it in when I wake up. Then I wake my son up and do my morning routine about 40 - 45 minutes. This is what I have always done with my diesel trucks and have never had any problems starting my truck in the morning. Then I unplug it and remote start it and leave it idle for about 6 -8 minutes.
He'll sell this truck in 12 months and buy something different to examine!
My manual says needs to be colder than 0°F to plug in the block heater (2023 GMC Sierra)
Tim, I have a new 2023 Silverado with the 3.0 Duramax, as you indicated , if it’s plugged in and you remote start it the cooling fan runs on High, the only way it turns off is if the truck sits 24hrs! Not sure of the fix at this point, the dealer was clueless!
You can also disconnect the battery and that will reset the fan.
The manual says it doesn’t need to be plugged in until below 0 it was 1 degree and I plugged mine in all night and the fan came on. The next day I plugged it in for one hour and the fan never came on, the next day I did 3 hours and the fan came on.
It has the block heater you might as well plug it in .it helps and you live in an area that can get pretty cold.
Heater won’t turn on untill outside temp reaches zero Fahrenheit
@@4961Studebaker True Story -17.7 C for us Canucks.
I’m not so sure about the block heater not going on till it’s zero F, maybe zero C. Anyway my 2022 refreshed LM2 was drawing about 450watts at 15F. So really any good grounded extension cord can handle that.
@@larrycernilli6474 not that I ever hope it gets that cold again. I’ll have to plug my Kill A Watt meter in-line of my extension cord next time and see the wattage draw.
@@4961Studebaker yes that’s what I used as well. I’m also going to check it at warmer temps, maybe I don’t have a temperature switch on mine or maybe it doesn’t work.
My 2021 1500 RST Diesel had the High Idle option in the menu setting but after they did the Recall for the long crank issue....that option disappeared from my menu .....and also....my Start/Stop function was disabled...
I think the High Idle disappearing from the menu was ment to be.....but the Start/Stop function now being active anymore is just like a glitch....that I really don't mind...
High idle setting exists on 2020 high country.
Diggin the new interior. I can't get over the new DRLs tho...they just look cheap.
They deleted the high idle in the 21s with an update. My 21 Denali 3.0 had the option in the radio but it didn’t do anything.
Tim, after you get a few thousand miles on your truck. Would you check any engine oil use over 5,000 mile. Thanks for your consideration. JR
These trucks have an exhaust brake, my 6.7 Cummins warms up fast with the exhaust brake on at startup.
it was all nice and good, technology made it so much better, and driveability is much improved but I like to know the cost of ownership compared to a gasoline truck, maintenance, and fuel cost including all the filters because usually, diesel has a water separator filter and those are not cheap, the life expectancy of the injection pump because the 6.6 Duramax and the ram Cummins as some issues, the cost of removing the transmission to inspect the oil pump belt, while you have the transmission out you might as well change that belt instead of paying twice, can you change this belt without lifting up the engine? I drive a 2009 tundra with 350000 miles so I that point if it was a chevy diesel I would have to remove the transmission 3 times? does that make any sense to you? I never had to open my transmission the only thing I did so far is a fluid change every 60000 miles, my conclusion is if you keep it less than 4 years maybe but if you are a regular joe like me with a family who needs to keep his truck and make it last, it is a different story.
Yea i think its stupid that they dont at least let you switch on a high idle the way you can in the 6.6 diesel with the cruise switch. We have a trailboss 3.0 and it takes forever to heat up. To make matters worse the heated seats and steering wheel dont work due to chip shortages.
Had you plugged in the block heater the engine would be warm at start, not hot but warm allowing you to get warm air at start.
And… that would defeat the purpose of the video.
At what temperature does the DEF freeze. Mine froze on me. And I get my DEP at Sapp Bros. Truck Stop.
I got put in limp mode like right now about 3 miles from home. So I limped it back home. Also waited 3 months waiting for the engine ECM from GM. GM wanted me to trade. I didn't feel like starting over making payments. Missed camping for the most part. Next time I'm taking it to diesel shop won't go to a dealership to have it worked on. Some old thing the dealership was dishonest. Found out the hard way by taking it to a diesel specialty shop.
☹️
7,500 dollars later.
Tim great video as always. I have a 2022 refresh and just turned 1500 miles. On your trip did you ever do a regen. Mine has not done one yet that i no of. How do you tell, there is no light that tells you, or how can i tell when it is in regen. I read it usually does one every tank full. Any help would be great.
Honestly, I've been wondering the same. There should be a burnt smell and that's how you can tell. I think I smelled that once or twice on the trip.
I just bought 22 GMC Denali LM2. My truck has shutter close when cold. So it warm faster run 15minute on remote start. It comfortable get in truck in morning. Your truck probably has same setup.
Yup. That’s actually for aerodynamics on highway.
Very good content Tim! You answered a lot of my questions. Once you’re driving does it’s heater seem to warm up from a cold start on a cold day as fast as a gas powered pickup?
Very warm. Got to turn it down before roasting out of the cabin.
Hi Tim,
To turn on High Idle for the Duramax diesel , put the parking brake on, press the cruise control resume button and that will turn up the idle by around 400 RPM’s. To stop/ cancel, hit the cancel switch on your cruise control.
I do like the OS and was hoping that “ Vehicle “ would have had the logical entry for cold starting high idle needs.
Nope. That doesn’t work on this Duramax.
That's only for the 6.6
I have the 6.6 duramax in a 2012 and during the idle up warm up times it’s around 1,000 rpm’s and regular idle is around 640-650 rpm’s. After this is good and warmed up what does it idle at?
Just bought one… hitting -40c soon and I’m so worried (northern Canada)
In the owners manual for '22 limited it says the block heater doesn't kick in till -18°c.
Strange timing. I just read the digital owner's manual in the truck and it states it there. It does not state a temperature on the printed supplemental manual.
GM should show the actual temperature of the coolant in the gauge cluster like Ram does.
There is a setting for it.
Thanks for going through some of the available settings. Nice options like being able to set the automatic cold weather settings like the seat, steering wheel etc. How warm is the heated steering wheel? I know for the Tundra you indicated that it wasn't very warm. How is overall comfort compared to the Tundra?
Much warmer and overall comfort is better.
GM’s use to use the cruise control as the high idle I also believe that it is limited to 1200 rpms. In our fleet a few trucks came with that function enabled but if not the dealer has to enable that option. For the run times my 2021 Sierra 1500 has a 15 minute remote start run time. When I use the app thats what its maximum run time per start
@@kennordsfan1494 I just learned about the run time today thanks to the app as well.
Most Japanese vehicles don't have sufficient heating in the seats or wheel even in 2022. So I still call them all "tin cans" compared to my nice and warm Volvo.
Any diesel engine will be hard to start in minus degree weather your cranking a motor that has heavy oil in the crankcase and on top of that you have build up enough heat in the cylinder bores to ignite the diesel fuel... grid heaters do help with that process but combustion in a diesel engine doesn't happen as quick as a gasoline engine would... considering you have 9.5 to 10 to 1 compression in a gasoline engine vs 21 or 22 to 1 compression in a diesel engine plugging the diesel in to the block heater does help but you may not always have that option depending on your location
Helps that diesel fuel doesn’t gel anymore. Maybe in extreme cold.
This little 3.0 seems to have done away with most of the negatives associated with diesels while keeping the many benefits.
It’s good that GM has chosen to continue to refine the light diesel. They’ve won me over.
It’s an oil pump belt pumping 0w20, you act like the belt is running an alternator or ac and water pump.
Try turning on cruise and bump the accel. This is how semi tractors work. Usually you can bump the accell a few times and see the ram go up
It doesn’t work with this 3.0L diesel.
@@Pickuptrucktalk On my 2023 HD. Vehicle in park. Parking brake must be on. Now turn on cruise control. Idle should bump up. Turns off when you put foot on brake pedal and release parking brake.
@@charleseustacefarley1414 right. HD operates completely differently than a LD diesel.
In the LM2, people have had issues when using the engine block heater above 0. The computer does not like it and there have been instances of the fans running nonstop after start and having to take to the truck to the dealer. Do not know if that's still an issue. Also, in the LM2, there was a high idle option in the settings, but it did not work, and my understanding was that they would be removing it from future trucks.