2026 GMC Sierra 2500 HD AT4

Complete vehicle specifications

Vehicle description

Features & options (250)

• Adaptive Cruise Control
• Bluetooth®
• Heated Steering Wheel
• Remote Start
• 4WD/AWD
• Android Auto
• Apple CarPlay
• Leather Seats
• Wi-Fi Hotspot
• Auto Dimming Mirror
• Emergency Brake Assist
• Lane Departure Warning
• Wireless Phone Charging
• Blind Spot Monitor
• Forward Collision Warning
• Navigation System
• Parking Assistance
• Rear View Camera
• Tow Hitch/Tow Package
• Automatic Climate Control
• Entertainment System
• Turbo Charged Engine
• Premium Sound System
• Wi-Fi Hotspot capable
• May require additional optional equipment
• SiriusXM with 360L Trial Subscription
• 13.4" diagonal GMC Premium Infotainment System with Google built-in
• Bluetooth® streaming audio for music and select phones
• Wireless Apple CarPlay capability for compatible phones
• Wireless Android Auto capability for compatible phones
• Customize and manage entertainment and vehicle feature setting
• Voice-activated technology for phone
• Wireless phone projection
• For Apple CarPlay and Android Auto
• Place and receive hands-free phone calls
• SiriusXM Trial Subscription
• 3 Years SiriusXM
• Enjoy channels curated by DJs, personalities, and tastemakers
• Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
• LED taillamps with LED stop lights and animation
• Spare tire carrier lock
• Helps keep spare tire secure
• 20" high gloss Black aluminum wheels
• Tailgate and bed rail protection caps
• Cab-mounted cargo area lamps
• Activated by switch located on center switch bank
• Illuminates the cargo bed area
• Body-color rear bumper
• With integrated CornerSteps
• Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
• Cargo tie-downs
• 12-fixed rated at 500 lbs. per corner
• Cargo bed LED lighting
• Provides light to find cargo in the bed
• CornerStep rear bumper
• Located at each end of the rear bumper
• Textured step pads to help provide secure footing
• Body-color door handles
• Side Bed Step
• Black textured step pads help provide secure footing
• Rainsense automatic wipers
• LED fog lamps
• Black beltline moldings
• 20" LT275/65R20 all-terrain, blackwall tires
• GMC MultiPro Tailgate
• Hitch area lighting
• Power lock and release
• Rear wheelhouse liners
• Deep-tinted glass
• Provides added protection from sun and glare
• High gloss Black mirror caps
• 18" LT275/70R18 all-terrain, blackwall spare tire
• Grille (Gloss Black header and grille insert bars with Black Chrome accents.)
• Spray-on bedliner
• Includes GMC logo on all trims except PRO
• Tailgate with EZ Lift assist, power lock & release
• Body-color front bumper
• Outside power-adjustable vertical trailering mirrors with power folding/extending auto-dimming driver and passenger upper glass
• Chrome mirror caps
• AT4 and AT4X features high gloss Black mirror caps
• Power folding/extending
• Lower convex mirrors
• Heated upper glass
• Integrated turn signal indicators
• Puddle lamps
• Perimeter lighting
• Auxiliary lighting
• Extends 3.31-inches
• IntelliBeam
• Front license plate bracket
• Winter Grille Cover
• Power sunroof
• Retracts into the roof
• Offers tilt and slide features with express-open and -close
• Black power-retractable assist steps with LED perimeter lighting
• Textured step pads help provide secure footing
• Retracts when not in use
• Deploy Running Board mode for car wash cleaning
• LED perimeter lighting
• Smoked Amber LED roof marker lamps
• Roof-mounted lamps near the front of the cab
• Onyx Black
• Power door locks
• Ventilated driver and front passenger seats
• Individually controlled
• Cooling feature includes both seatbacks and cushions
• Steering-wheel mounted controls
• Manual tilt and telescoping steering column
• Theft-deterrent unauthorized entry system
• Helps deter unauthorized entry, helping to protect your vehicle
• Carpeted floor covering
• Color-keyed to match the interior
• Compass
• Located in instrument cluster
• Driver memory
• Inside rearview auto-dimming mirror
• Rear Seat Reminder
• 12.3" diagonal color Driver Information Center
• High definition display provides crisp, premium appearance
• USB ports
• (2) Data/charge ports located inside center console
• Keyless Open and Start
• Lockout protection helps you avoid locking keys in the vehicle
• Rear air vents
• Provides cabin comfort for rear occupants
• Dual-zone automatic climate control
• Allows individual climate settings for both driver and front passenger
• Outside temperature display
• Located in infotainment display
• 120-volt power outlet
• 3-prong auxiliary household-style outlet
• Located on the instrument panel
• 120-volt box-mounted power outlet
• Located in the pickup bed
• Rear window defogger
• Power windows with rear express-down
• Premium rear floor liners with removable carpet insert
• Premium front floor liners with removable carpet insert
• Seat trim, Perforated front Leather
• You can always override the feature and take control
• Front center console
• Front bucket seats
• 10-way power front passenger seat
• Includes 8-way power front passenger seat
• Includes a 2-way power lumbar control
• Heated driver and front outboard passenger seats
• Up-level rear seat with storage package
• 60/40 Full-length folding bench seat
• Seatback storage on left and right side
• Center fold out armrest with 2 cupholders
• Underseat storage (full cab width)
• 10-way power driver seat with power lumbar
• Includes 8-way power driver seat
• (2) First row, located on console
• Wrapped steering wheel
• Power windows with driver and front passenger express-up/down
• If obstruction is detected, the anti-pinch feature will auto-reverse
• Assist handles
• Front A-pillar mounted for Driver and Passenger
• Rear B-pillar mounted
• (2) Charge ports located on rear of console
• Heated rear outboard seats
• Passengers can manage heat settings with their own controls
• Wireless Charging
• Uses induction technology for select portable electronic devices
• Convenient charging location
• Power windows with driver express-up/down
• Universal Home Remote
• 3-channel programmable
• Jet Black with Kalahari accents, Perforated Front Leather seat trim
• Head-Up Display
• Multi-color 15" diagonal Head-Up Display
• Adjustable vertical position and brightness of the display
• Rear Camera Mirror
• The feature also allows brightness, vertical tilt and zoom adjustments
• Power sliding rear window with rear defogger
• Off-Road suspension
• Hill Descent Control
• Uses antilock braking to help provide a smooth, controlled descent
• Activates by pushing a button below the instrument panel
• Four wheel drive
• Integrated trailer brake controller
• Integrated with the antilock brake system (ABS)
• 4-wheel antilock disc brakes
• Fully boxed frame
• Hydroformed front section
• High-strength steel
• Heavy-Duty Air Filter
• Automatic locking rear differential
• Red vertical recovery hooks
• Two front frame-mounted
• Autotrac 2-speed transfer case with push button controls
• 4-button control 2WD, Auto, 4WD, 4WD LO
• 2WD High for most on-road and highway situations
• Automatically engages 4WD until traction is regained
• Brake pad wear indicator
• In-Vehicle Trailering App
• Checklist
• Trailer maintenance reminders
• Trailer security alerts
• Trailer mileage
• Tow/haul reminder
• Trailer electrical diagnostics
• Digital Variable Steering Assist
• Skid plates
• Help protect the front underbody, oil pan and transfer case
• 11,350 lbs. GVWR
• 220-amp alternator
• Emissions, Federal requirements
• Heavy-duty dual batteries with 1460 cold-cranking amps
• 70 Amp-hr
• Maintenance-free with rundown protection and retained accessory power
• AT4 Preferred Package
• Rear sliding power window
• LED roof marker lamps
• AT4 Preferred Equipment Group includes standard equipment
• AT4 Premium Plus Package
• Technology Package
• AT4 high clearance step
• AT4 Preferred Package on AT4
• Option/package discount
• Signature LED Daytime Running Lamps
• LED Daytime Running Lamps
• Rear Seat Belt Indicator
• HD Surround Vision
• Can help you park or avoid vehicles and objects
• Trailering camera provisions
• Includes connector for accessory wiring harness
• Safety Alert Seat
• You can also switch to beeping crash avoidance alerts
• Trailer Side Blind Zone Alert
• Hitch View
• Shows a close-up view of the trailer hitch
• Rear Cross Traffic Alert
• Hitch Guidance
• Can help you line up the hitch to your trailer
• OnStar services capable
• Tire Pressure Monitoring System with Tire Fill Alert
• Teen Driver
• Following Distance Indicator
• Designed to help you maintain a safe following distance
• 6 airbags
• Dual-stage frontal airbags for driver and front outboard passenger
• Head-curtain airbags for outboard seating positions
• Front and Rear Park Assist
• These can help you park and avoid collisions
• Trailering Information Label
• Buckle to Drive
• OnStar Basics
• Drive confidently with core OnStar services including

Dealer-provided information may change. Confirm availability, price, vehicle condition, taxes and fees with the selling dealership.