In case you hadn’t noticed, GM is making a big to-do over the launch of its updated trucks. Back in August, GMC invited select members of the media to take a look at its new range-topping models—the 2027 GMC Sierra 1500 AT4X and Denali Ultimate—to give us a better idea of what the company has in store for its premium half-tons. Our walkthrough was light on details, but we’ve since learned quite a bit about GM’s plans for its new half-tons. The highlights include an all-new family of small-block V8s, the return of the light-duty Duramax diesel, and the availability of a 34-gallon fuel tank that gives the latter more…
2027 GMC Sierra Denali Ultimate vs AT4X: GM’s Highest-Level Luxury Trucks Got Even Nicer
