The 2021 GMC Sierra 1500 is available with five different ... If you want a combination of big torque and big MPGs, the 3.0-liter Duramax turbocharged diesel inline-six with 277 horsepower and ...

The Silverado Duramax could be had on LT, RST, LTZ, and High Country models. GMC made it optional for the CarbonPro Edition, Denali, AT4 ... the 2021 Chevy Silverado 1500 and GMC Sierra 1500 ...

Changes are afoot for the 2024 GMC ... 2024 Sierra arrives, the SLT, AT4, Denali, Denali Ultimate, and AT4X will have access to the active exhaust option. GM Authority says the Duramax is ...

Since its introduction in 2022, the off-road-focused GMC Sierra 1500 AT4X has exclusively employed GM’s familiar 6.2-liter gasoline V-8. The AT4X model is now getting a welcomed powertrain ...

The 2024 GMC Sierra 1500 AT4X now comes standard with GM's Duramax diesel 3.0-liter inline-six. While it has less horsepower, the diesel's 495 pound-feet of torque is 35 more than the optional 6.2 ...

GM’s heavy-duty trucks, the Chevrolet Silverado HD and GMC Sierra HD, are not the only ones getting updates for the 2024 model year. The light-duty Silverado 1500 and Sierra 1500 receive a few ...

The 2024 GMC Sierra AT4X is getting an upgraded powerplant for the new model year. Where it once solely featured GM’s 6.2-liter V8 truck engine, it’s now set to offer Duramax diesel power as ...

a 2021 GMC Sierra HD Denali 2500, plopped itself into my driveway like the Pillsbury Dough Boy trying to fit into a Little Ducky innertube. Powered by a 6.6L V-8 Duramax turbodiesel bolted to an ...

In the case of the GMC ... from the 2021 version — has become the reality for the short-term. I recently drove the 2022 GMC Sierra 1500 Limited, specifically one equipped with the AT4 off ...

While a very thoroughly improved GMC ... Sierra Limited trim requires you to pay more for a diesel engine, on the AT4, the oil-burning powerplant is actually the cheaper way to go. This 3.0-liter ...

It may not be GMC’s ultimate off-roader — you’ll want the Yukon AT4 or the upcoming Hummer ... one sub-zero morning to find my Sierra HD test truck utterly immobile. GMC, of course, knows this, which ...