Used 2021 GMC Acadia SUV Trims Comparison

SL and SLE
The SL base model has a second-row bench seat and seven-passenger capacity. The SLE has second-row captain's chairs, reducing passenger capacity to six. Otherwise, these two trims are very similar, though the SLE is eligible for more options than the SL. Standard features include:

• A 193-horsepower four-cylinder engine
• Keyless ignition and entry
• Tri-zone automatic climate control
• 8-inch infotainment touchscreen
• Wireless Apple CarPlay and Android Auto smartphone integration
• Six-speaker sound system
• Five USB ports
• OnStar connected services with an onboard Wi-Fi hotspot
• Blind-spot monitor (alerts you if a vehicle in the next lane over is in your blind spot)
• Rear cross-traffic alert (warns you if a vehicle behind you is about to cross your vehicle's path while in reverse)

SLT
The midrange SLT trim receives a more powerful engine and bevy of extra features such as:

• A 230-hp turbocharged four-cylinder engine
• Roof rails
• Hands-free power liftgate
• Foglights
• Remote ignition
• Leather upholstery
• Heated front seats
• Power-adjustable driver's seat
• Auto-dimming rearview mirror
• Universal garage door opener
• Household-style power outlet for the middle row
• Navigation system
• Eight-speaker Bose audio system with HD radio

You also get these safety features as standard:

• Forward collision mitigation (warns you of an impending collision and applies the brakes in certain scenarios)
• Lane keeping assist (steers the Acadia back into its lane if it begins to drift over the lane marker)
• Automatic high beams

AT4
The AT4 trim is similar to the SLT but has a few extra features that enhance its off-road capability. Feature additions include:

• A 310-hp V6 engine
• All-terrain tires
• Standard all-wheel drive with componentry unique to the AT4 for greater traction
• Hill descent control
• Hill hold assist

Denali
The top-of-the-line Denali forgoes the AT4's off-road features but keeps the V6 engine. Standard feature additions include:

• Power-folding heated mirrors
• Digital instrument panel
• Head-up display
• Ventilated front seats
• Heated second-row seats
• Driver-seat memory functions
• Wireless charging pad

The Denali is also eligible for two exclusive option packages:
Technology package

• Surround-view camera system (gives you a top-down view of the Acadia and its surroundings for tight parking situations)
• Adaptive cruise control (maintains a driver-set distance between the Acadia and the vehicle in front)
• Enhanced automatic braking for forward collision mitigation system
• Digital rearview mirror (allows you to see out the back even with a fully loaded cargo area)

Denali Ultimate package requires the Technology package and adds:

• Sunroof
• Adaptive suspension dampers (enhance ride comfort and handling stability)
• Tow package

Many of the features found on the upper trim levels are available on supporting trims as options. Other optional features include a rear entertainment system, a second-row bench seat (for seven-passenger seating), and an Elevation Edition package that adds black exterior styling accents and 20-inch wheels.