The 2022 GMC Sierra 1500 Limited will come standard with the GM 3.0L LM2 inline-six turbo-diesel engine when ordered in the AT4 trim level, GM Authority can confirm.
For the 2021MY, the GMC Sierra 1500 AT4 comes standard with the 5.3L L84 V8 engine, with the 6.2L L87 V8 and 3.0L LM2 inline-six offered as optional equipment. However, this will change with the introduction of the carryover 2022 GMC Sierra 1500 Limited model, with the off-road-focused AT4 trim set to come standard with the 3.0L diesel motor. Customers will also be able to order the AT4 trim level with the 6.2L L87 V8 engine for a small price premium.
The mid-cycle-update version of the GMC Sierra 1500 was originally set to arrive for the 2022MY, however various setbacks forced GM to delay the revised model’s arrival. GM will sell a GMC Sierra 1500 Limited model in its place, which will carry over almost every aspect of the 2021 model, including trims and most available options and features. With the GMC Sierra 1500 Limited set to serve as a stop-gap to the updated model, the actual refreshed GMC Sierra 1500 will be sold as a late 2022 model-year product.
While there are limited changes in store for the 2022 GMC Sierra 1500, the model will introduce a more off-road-focused version of the AT4 trim called the AT4-X. The new 2022 GMC Sierra AT4-X will slot in above the standard AT4 trim level and will feature additional off-road equipment for added capability.
The 2022 GMC Sierra 1500 Limited in both the Regular Cab and Crew Cab body configuration will enter production at the GM Silao Plant in Mexico on September 20th, 2021. Production of the Regular Cab model at the GM Fort Wayne Assembly plant in Indiana will begin just one week later on September 27th, 2021.
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Comments
Looks like they want more people to buy the diesel. Honestly the biggest problem that the LM2 has is that it’s competing with the 5.3 and 6.2. Both absolutely fantastic engines 🙃 the 5.3 does need the 10 speed though. Is responsiveness with the 6 is a bit sluggish and with the 8, quick but not as refined and has a bad stigma. I hope all the GM engines get an upgrade.
2.7-update output to CY4
5.3-add VVT from 2.7
LM2-remapping for more output, please add cylinder deactivation as well for less regen
6.2-add VVT from 2.7 for 470HP and 510
It may seem counterintuitive, cylinder deactivation on the diesel may present an emissions issue if it can’t maintain high exhaust temps
No different from gas engines with a cat. In fact it’s worse on gas because three-way catalysts stop working when the exhaust is excessively lean.
That’s why CDT in both gas and diesel engines always utilize a system to deactivate the valves to stop air from being pumped. The lifter mechanism is what’s been causing reliability issues in recent GM engines.
Cylinder deactivation in diesels is to increase exhaust temperature, less airflow and doubling the fuel heat content in that air. Object is to be able to burn off the particluant filter continuously without needing to run a regen. key here is no need for regen and it would sip DEF. Diesels unlike gas engines don’t have huge pumping losses that benefit from deactivation.
CDT on a diesel is to save fuel. Current diesels already accomplish what you’re talking about with the throttle plate, closing it to increase EGT during operation to passively regen. It’s far simpler than the complex lifter setup you need for CDT.
DEF consumption is generally unrelated to regens. DEF consumption increases when you run the engine lean at higher powers. The increased oxygen in the charge forms more NOx. This is why GHG17 engines have higher DEF consumption, they generate more NOx and then eliminate it in order to save fuel.
Putting the 3.0 in as standard is the best idea GM has come up with in decades… I bought a Tahoe 3.0, 3 months ago and couldn’t be happier. First tank was a ride back home from Kellogg, 515 miles at 30.9 mpg, at 73 mph… very nice.
I have over 500,000 miles on 2 large Duramax’s, I know a bit about these fine engines.
Build them all in the US or don’t build them at all. Put your global nonsense where the sun doesn’t shine. Americans died so GM could thrive in the USA not in China or elsewhere. If you want to sell them elsewhere do it but build them here so Americans can work instead of collecting welfare checks because you prefer slave labor.
Wise move. Diesels are 10X’s better than gasoline engines. Just ask any German.
For someone like me what would (if any) be the advantage of putting diesel in my next truck? I rarely tow anything, I do pull a trailer now and then and once in a blue moon I pull a boat but overall not really needed. I do like the idea of the small diesel (longevity, gas mileage) and I want the ability to tow available at anytime but I would also assume the 5.3 would work fine for me. Guess I’d love to have a diesel but cant convince myself it’s worth the time or extra money. Thoughts?
Honestly the all around driveability of this motor the way it’s setup in the half ton trucks is really good, I’d say better than the 5.3 truck I had before my diesel. There’s still a negative stigma about diesels that some people can’t let go but if they’d drive one they’d see the difference. Someone stated in another article that diesels don’t always make sense but in this application (half tons and fullsize SUV) it does make sense. Now would this have been the case 10 years ago or even 5 years ago probably not. I’ve made the jump to diesel and I haven’t been disappointed yet, in either of my vehicles.
Thanks J.S. Your comments make a valid point. Not sure how my question rated a thumbs down from someone though……haha
Was hoping GM would improve power in the newest 3.0 Duramax. Bump HP to over 300 and torque to 550-600 ft. Lbs. So far, it’s been a good engine.