2021 GMC Sierra 1500 Trims Comparison

The Sierra is also available with one of five engines. They include:

• 4.3-liter V6 (285 horsepower, 305 lb-ft of torque)
• Turbocharged 2.7-liter four-cylinder engine (310 hp, 348 lb-ft of torque)
• Turbocharged 3.0-liter inline-six diesel engine (277 hp, 460 lb-ft of torque)
• 5.3-liter V8 (355 hp, 383 lb-ft of torque)
• 6.2-liter V8 (420 hp, 460 lb-ft)

Naturally, not every engine is available in every trim or configuration. The V6 comes paired to a six-speed automatic transmission. The four-cylinder and 5.3-liter V8 (with rear-wheel drive) come with an eight-speed automatic. Finally, there's a 10-speed automatic for the 5.3-liter V8 with 4WD, the diesel six-cylinder and the top-dog 6.2-liter V8. Rear-wheel drive is standard for most trims, and four-wheel drive is available.

Base
The entry-level Sierra 1500 is about the closest you'll get to a simple old-school truck you'll find these days. It comes with:

• LED headlights
• Chrome bumpers
• Tilt-only steering wheel
• Six-speaker audio system (double cab and crew cab)
• Two USB ports
• 7-inch touchscreen
• Apple CarPlay and Android Auto smartphone integration

SLE
It includes all of the base Sierra's features and adds a lot more, including:

• Body-colored door handles
• LED bed lighting
• Tinted rear windows
• Power-adjustable driver's seat
• Dual-zone automatic climate control
• 8-inch touchscreen infotainment display
• Two additional USB ports (an additional two when equipped with bucket seats)
• Cruise control
• Heated, leather-wrapped tilt-and-telescoping steering wheel
• Heated front seats
• Keyless entry and ignition
• MultiPro configurable tailgate
• Automatic-locking rear differential

Elevation
The Elevation only adds a few features on top of the SLE, including:

• 20-inch wheels
• Remote locking tailgate
• LED foglights

SLT
Ramps up the Sierra's luxury vibe with:

• 18-inch wheels
• Chrome exterior trim
• Heated and power-folding mirrors
• Leather upholstery
• Power-adjustable front passenger seat
• 120-volt power outlet
• Trailer hitch guidance assist
• Trailer brake controller
• Wireless Apple CarPlay and Android Auto

AT4
Enhances the Sierra's off-road performance with:

• Four-wheel drive with low-range gearing
• Hill descent control
• Upgraded suspension with monotube shock absorbers and a 2-inch lift
• All-terrain tires
• Recovery hooks
• Skid plates
• Adjustable traction control

Other than the off-road upgrades, the AT4 also includes:

• Ventilated front seats with center console

Denali
The Sierra Denali sits at the top of the lineup. It builds off the SLT trim with:

• Two-speed transfer case (four-wheel drive only)
• Standard Driver Alert I package (see below)
• Adaptive suspension (can adjust to improve ride comfort and handling)
• Bose audio system
• 20-inch wheels
• Side steps
• Power-sliding rear window
• Digital instrument cluster
• Heated second-row seats
• Ventilated front seats
• Wireless charging

Many features found in the upper trim levels can be added to the lower trims through option packages. Other major options for the Sierra 1500 include:

•  Driver Alert I package
• Blind-spot monitor with rear cross-traffic alert (warns you if a vehicle is in your blind spot during a lane change or while reversing)
• Parking sensors (alert you to obstacles that may not be visible in front of or behind the vehicle when parking)
• Driver Alert II package
• Adaptive cruise control (adjusts speed to maintain a constant distance between the Sierra and the car in front)
• Automatic emergency braking (warns if a front impact is imminent and applies the brakes if you don't respond in time)
• Forward collision warning (alerts you of a possible collision with the car in front)
• Lane departure warning with lane keeping assist (warns you of a lane departure when a turn signal isn't used and can automatically steer to maintain lane position)
• Max Trailering package
• Revised gear ratio
• Upgraded radiator
• Revised shocks with heavy-duty springs
• Technology package
• Rear camera mirror
• Bed-view camera
• Surround-view camera (gives you a top-down view of the Sierra and its surroundings for tight parking situations)
• Head-up display