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LM2 DURAMAX DIESEL ENGINE FOR GM SUV LINEUP LAUNCHES IN Q4 2020

The 2021 Tahoe, Suburban, Yukon And Escalade Will All Offer The 3.0L Duramax

2021 Chevrolet Tahoe

After perusing through GM’s dealer order guides, the 3.0L Duramax diesel engine is notably absent from the 2021 Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon and Cadillac Escalade guides. It’s therefore become understood that the 3.0L Duramax diesel engine that will come in as an option would not be available at the launch of GM’s all-new T1 platform sport utility vehicles. And GM spokespeople have confirmed to MC&T this will be the case, with availability happening “later” in the 2021 model year. These new full-size GM utility vehicles are expected to begin production as early as next month, June, but we have exclusively learned that the rollout of the 3.0L LM2 Duramax for the GM T1 SUVs will not start until at least November.

This straight-six diesel engine is currently offered on the 2020 Chevrolet Silverado 1500 and 2020 GMC Sierra 1500 pickup trucks. While they will be offered on each new GM full-size SUV, they will not be offered on the Tahoe Z71 or Suburban Z71, nor the Yukon AT4 off-road packages.

LM2 Duramax Diesel
3.0L LM2 Duramax I6 Diesel Engine. Photo via GM.

General Motors has been busy refining and honing the LM2 Duramax, and evaluating how to improve certain aspects of it, such as how much it can tow. This would, in turn, require improvements in cooling systems at the very least. With this happening behind the scenes, don’t be surprised if the LM2 emerges better than it was before in a few months’ time.

At launch, the 2021 Chevrolet Tahoe and Suburban, 2021 GMC Yukon, and 2021 Cadillac Escalade will offer their V8 gas engines only. For Chevrolet and GMC, that means the 5.3L L84 V8 and the 6.2L L87 V8. For Cadillac, that means only the L87 V8. EPA fuel economy numbers, as well as towing numbers, have been published online. Despite these vehicles growing significantly in size – especially the short wheelbase Tahoe, Escalade and Yukon – it’s neat to see that these fuel economy numbers haven’t really dipped from the previous generation K2XX SUV models.

The General Motors Arlington Assembly plant in Texas is preparing to build its first T1 SUVs fit for sale next week.

2021 Chevrolet Tahoe and Suburban
2021 Chevrolet Tahoe ZR2 and 2021 Chevrolet Suburban High Country. Photo via GM.

Written by Manoli Katakis

Muscle Cars & Trucks was founded by Manoli Katakis - an automotive media veteran that has been covering the latest car news since 2009. His journalism has uncovered dozens of major product changes, updates, plans, and cancellations long before automakers were ready to make things official.

Some highlights over the years of his reporting include the uncovering of the Zora trademark before anybody else reported on the coming of a mid-engine Corvette, as well as the dead-accurate reporting of the coming of the Chevrolet Colorado ZR2, two years before it hit the market, and even before the debut of the concept vehicle. This type of reporting has immediately continued here, with reports of the original seventh-generation Camaro plans being shelved, as well as what's in store for the Chevrolet Silverado.

Some of his work can be found on massive automotive media outlets, such as Motor1. He also has been a guest on the 910AM Radio Station with Detroit News auto critic Henry Payne, as well as the enthusiast-oriented Camaro Show podcast.

Over the years, Manoli has interviewed various automotive industry titans, leaders, and people that make things happen otherwise. These include figureheads such as GM CEO Mary Barra, GM President Mark Reuss, automotive aftermarket icon Ken Lingenfelter, Dodge firebrand Tim Kuniskis, along with various chief engineers of vehicles such as the Ford F-150 & Mustang, Chevrolet Camaro & Corvette, and many more.

At MC&T, Manoli is taking his journalism expertise, deeply planted sources, driving abilities, and automotive industry knowledge to new levels, covering more vehicles and brands than ever before. This is the place where you will continue to read groundbreaking stories about American performance vehicles, pickup trucks, and sport utility vehicles. Here is where you’ll also read insights and quotes from various automotive subject matter experts on the latest relevant products, as well as some of the latest official news from their manufacturers.

Fun facts: he also once beat Corvette Racing driver Tommy Milner in an autocross with a Chevrolet Bolt EV. The biggest vehicle he’s ever driven is a John Deere mining truck. Besides a go-kart, the smallest vehicle he’s driven has been a Hyundai i10. He’s also spent time in the cockpit of various American performance vehicle icons, including the fifth-generation Chevrolet Camaro Z/28, Dodge Challenger Demon, and Ford Mustang GT350R. He has reviewed dozens of trucks, SUVs, and performance vehicles over the years.

One of his favorite new vehicles on the market today happens to be the Chevrolet Colorado ZR2 Bison. He is also a card carrying member of the Sports Car Club of America, and regularly participates in Detroit Region autocross events.

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