2024 GMC Sierra 2500HD

Seven trim levels are available. The Pro is the basic work truck, and the SLE builds on that with an upscale look and added equipment. Choose the SLT trim for leather and other premium amenities, the AT4 or new AT4X if off-roading is a part of your plans, or the Denali and new Denali Ultimate for the most luxurious versions of the Sierra 2500HD.

Additionally, GMC offers a choice between two engines, one gas and one diesel. A 6.6-liter gasoline V8 engine (401 horsepower, 464 lb-ft of torque) is standard, paired with a 10-speed automatic transmission. A turbocharged 6.6-liter diesel V8 engine (470 hp, 975 lb-ft) is optional and also uses a 10-speed automatic. Four-wheel drive is optional for the Pro, SLE and SLT, and it comes standard on the AT4 and higher trims.

Pro
Highlights of the base Pro trim include:

• 17-inch steel wheels
• LED headlights and taillights
• Chrome bumpers
• Integrated rear bumper steps on each corner
• Cargo area lighting
• Trailering hitch with Hitch Guidance system
• Manually adjustable trailering mirrors
• Remote keyless entry
• Locking tailgate and spare tire carrier
• Manual windows and door locks
• Air conditioning
• 40/20/40-split front bench seat
• Vinyl seats and floor coverings

The standard infotainment system comes with:

• 7-inch touchscreen display
• Wireless Apple CarPlay and Android Auto smartphone integration
• Two USB ports
• Two stereo speakers
• Rearview camera
• Wi-Fi hotspot
• Remote monitoring and control via a smartphone app or OnStar

In addition, extended-cab and crew-cab models add:

• Power windows and door locks
• 60/40-split rear bench seat
• Rear air-conditioning vents
• Six stereo speakers

All 2024 Sierras also receive the suite of driver assistants that include:

• Forward collision mitigation (warns you of an impending collision and applies the brakes in certain scenarios)
• Lane departure warning (alerts you if the vehicle begins to drift out of its lane)
• Automatic high-beams
• Rear seat reminder (alerts you to check the rear seat before exiting the vehicle)

SLE
The SLE adds popular features such as:

• 17-inch alloy wheels
• Upgraded exterior trim
• Power-adjustable, heated trailering mirrors
• MultiPro configurable tailgate with EZ Lift assist
• Integrated brake trailer controller (allows adjustment of a trailer's brakes from the cab)
• Digital instrument panel
• Cloth seats and carpeted floors
• Synthetic leather-wrapped steering wheel
• Cruise control
• Power door locks and windows
• Keyless entry
• 13.4-inch touchscreen infotainment display
• Google built-in apps for navigation and voice assistance
• Satellite radio
• Connected services including access to a Wi-Fi hotspot

SLT
The SLT trim equips the truck with added styling, comfort and convenience features:

• 18-inch alloy wheels
• All-terrain tires
• Added chrome exterior trim
• Upgraded headlights and taillights
• LED foglights
• LED cargo bed lighting
• Power-folding and -extending trailering mirrors with auto-dimming
• Rain-sensing wipers
• 120-volt power outlets on dashboard and in cargo bed
• Keyless access with push-button engine start
• Remote engine start
• Dual-zone automatic climate control
• Leather seats
• Power-adjustable front seats with driver's seat memory
• Heated front seats and heated steering wheel
• Rear USB ports
• High-definition backup camera with Hitch View angle
• Smartphone trailering app
• Theft deterrent system
• Digital steering assist system (reduces driver fatigue by automatically adjusting the steering effort based on vehicle speed and road surface)

AT4
Made for off-roading, the AT4 provides:

• 20-inch wheels
• Standard four-wheel drive
• Hill descent control
• Off-road suspension tuning
• Underbody skid plates
• Red recovery hooks
• Body-color bumpers
• Spray-in bedliner
• Front bucket seats with center console
• Ventilated front seats
• Heated rear outboard seats
• Blind-spot warning with rear cross-traffic warning (alerts you if a vehicle is in the vehicle's or trailer's blind spot during a lane change or while reversing)
• Safety alert seat (vibrates to bring added driver attention to safety alerts)
• Surround-view camera system (gives you a top-down view of the Sierra 2500HD and its surroundings for tight parking situations)
• Parking sensors (alert you to obstacles that may not be visible in front of or behind the vehicle when parking)

Denali
The Denali is all about luxury thanks to:

• Side assist steps
• Roof marker lights
• Power-sliding rear window
• Wood and aluminum interior trim
• Premium leather seats
• Upgraded driver information display
• Navigation system
• Bose premium sound system
• Wireless smartphone charging
• Bed-view camera

AT4X
Building on the off-road-focused AT4, this new trim ups the all-terrain ante with:

• Raised off-road suspension with advanced adaptive dampers
• Stronger underbody skid plates
• Driver-selectable locking rear differential
• Trailer tire pressure sensor capabilities

AT4X AEV Edition
This new option package partners with AEV (American Expedition Vehicles) and adds:

• 18-inch wheels
• Heavy-duty bumpers with recovery points
• AEV-branded interior and exterior elements
• Accessory switches

Denali Ultimate
This new top trim comes standard with the diesel engine plus:

• Power-deploying side steps
• Premium leather upholstery
• Front seats with added adjustments and massage functions
• Leather-wrapped steering wheel
• 12-speaker Bose premium audio
• Tailgate audio system by Kicker
• Adaptive cruise control (adjusts speed to maintain a constant distance between the vehicle and the car in front)
• Head-up display (displays important information in your sight line onto the windshield)
• Digital rearview mirror (allows you to see out of the back even with a fully loaded cargo area)

Many of the standard features on the upper trim levels are available on the lower trims as options. Other major extra-cost upgrades, depending on the trim level, include:

• Trailering camera system (can display multiple trailer-based camera views on the touchscreen to aid with towing)