2020 GMC Sierra 2500HD Trims Comparison

All trims are available with either a 6.6-liter V8 gasoline engine (401 hp, 464 lb-ft) mated to a six-speed automatic transmission or a 6.6-liter Duramax V8 turbodiesel (445 hp, 910 lb-ft) paired with a 10-speed automatic. You can probably guess which one the vast majority of customers choose.

The base version is the Sierra. There is not much to draw the attention of anyone interested in a luxury truck. Features as basic as power seats or the 8-inch touchscreen are simply not available. This version, however, does come with standard Apple CarPlay and Android Auto capability, along with Bluetooth connectivity. And it's the best hauler in the group.

One step up is the SLE. Here you get a standard color info screen and a Wi-Fi hotspot, plus cruise control and a leather-wrapped steering wheel. A number of options also become available. Among them: the coveted ProGrade Trailering system and its plentiful menus and cameras.

For a significant step up, spring for the SLT. The MultiPro tailgate is standard, as is an 8-inch infotainment touchscreen, dual-zone automatic climate control and power-adjustable front seats. A big plus is the standard ProGrade Trailering package with towing-specific apps and a rearview camera positioned over the tow hitch.

For a tougher look and a bit more off-road capability, there's the AT4. It's easily distinguished from other trims with a lifted suspension, additional skid plates, dark chrome trim and bright red tow hooks.

Finally, there's the Denali. In this trim, the cabin is swathed in exclusive materials and technology, such as premium leather on the heated and ventilated seats and upgraded climate control. Not everything is included, however. The fanciest features are still add-ons, such as a color head-up display and a surround-view camera. Unlike some other heavy-duty trucks, adaptive cruise control is not offered at all.