Because the Sierra is just a Silverado underneath, the powertrain options look the same, and each engine now sends its power to the wheels through a 10-speed automatic. However, if you’re curious about horsepower, torque, fuel economy, acceleration, or any other gory details, you’ll have to wait. According to GMC, “Additional information about each engine offering, including detailed technical specifications, will be announced at a later date.”
So, what if GMC isn’t focused on the Sierra’s exterior design, the next-generation small-block V8s under the hood, or any other powertrain specs for its initial reveal? does Focus on GMC? The new interior of the Sierra. There’s still a Silverado underneath it all, but if you have the money, this new generation can be quite attractive, and the interior design is distinct from the Chevy. No matter which trim you’re interested in, GMC says the Sierra offers “best-in-class standard crew cab front head and leg room.” Additionally, there’s an optional center console that offers a variety of configurations and the ability to fold the center armrest forward to create a larger work surface that still promises easy access to those coveted USB ports.
Ultimately, the 2027 GMC Sierra 1500 lineup will expand to include Pro, Elevation, AT4 and Denali trim levels. However, for now, GMC is only talking about the two hottest versions at the top of the Sierra range – the AT4X and Denali Ultimate. Pricing is still a mystery, but the AT4X is set to be the ultimate off-road Sierra, while the Denali Ultimate promises even more luxury than the regular Denali already offered.
Since there is more information about the Denali Ultimate, let’s look at the AT4X first. In addition to some exterior changes to give the Sierra a tougher look, AT4X highlights include a 2.0-inch lift, Multimatic Jange Control dampers that promise to improve high-speed off-road performance, 35-inch Goodyear Wrangler Territory MT tires, e-locking front and rear differentials, and an AT4X-exclusive interior option that GMC calls Timber Mahogany. A panoramic sunroof comes standard, and the speakers in the doors have stainless steel covers because steel is as tough as a truck. The AEV Off-Road Package remains an available upgrade.
