Used 2020 GMC Acadia SUV Trims Comparison

The SL is limited in terms of what can be added to it. You can only get it with the base 2.5-liter engine (193 horsepower, 188 lb-ft of torque) and front-wheel drive. Seating for seven is standard, with no option for second-row bucket seats.

The SLE comes with a few upgrades, notably satellite radio and selectable traction control modes for inclement weather or different driving situations. And the SLE opens access to more upgrades, such as the turbocharged 2.0-liter engine (230 hp, 258 lb-ft of torque) or the V6 (310 hp, 271 lb-ft).

The SLT offers more luxury and practicality through leather upholstery, power-adjustable front seats, a power liftgate, remote start, and second-row captain's chairs in place of a bench. You can opt to switch back to the bench for an extra seat. It also comes standard with a more powerful 2.0-liter turbocharged four-cylinder engine. Beyond that, quite a few of the range-topping Denali's features are available as parts of option packages for the SLT.

The new AT4 rides on all-terrain tires and comes with some extra off-road aids such as hill descent control and automatic hill hold. It has a few distinguishing exterior design cues to help it look even tougher as well. Inside, you'll find only two rows of seating standard, reducing weight and increasing storage for off-road adventures. Seating for six or seven passengers can be added as an option. The AT4 comes standard with a V6 engine and all-wheel drive.

The range-topping Denali trim comes with the V6 engine and front-wheel drive as standard (AWD is available). It's loaded with almost all the options GMC offers, including active safety features such as forward collision warning and automatic emergency braking as well as lane keeping assist. It also gets navigation, a Bose stereo system, heated and ventilated front seats, and heated second-row seats. A unique grille and upgraded interior materials further set the Denali apart.

It's worth noting that adaptive cruise and a surround-view camera aren't standard, even on the Denali. They are part of the Technology package that is only available on the Denali.