2026 GMC Sierra 2500HD AT4

Complete vehicle specifications

Features & options (133)

• Bed Step, Black integrated on forward portion of bed on driver and passenger side
• Bumper, front, body-color lower
• Bumper, rear body-color with bumper CornerSteps
• Cargo tie downs (12), fixed, rated at 500 lbs per corner
• CornerStep, rear bumper
• Door handles, body-color
• Fog lamps, LED
• Glass, deep-tinted
• Grille (Gloss Black header and grille insert bars with Black Chrome accents.)
• Headlamps, Animated LED projectors LED turn signals and Daytime Running Lamps
• IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
• Lamps, cargo area cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
• LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
• Mirror caps, high gloss Black
• Moldings, beltline, Black
• Tailgate and bed rail protection caps, top
• Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
• Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
• Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
• Tire, spare LT275/70R18 all-terrain, blackwall
• Tires, LT275/65R20 all-terrain, blackwall
• Wheelhouse liners, rear
• Wheels, 20 (50.8 cm) High Gloss black aluminum wheels 8 spokes
• Wipers, front rain-sensing
• Adaptive Cruise Control
• Air conditioning, dual-zone automatic climate control
• Air vents, rear
• Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
• Bluetooth for phone connectivity to vehicle infotainment system
• Bose Sound System, premium 7-speaker system with Richbass woofer
• Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
• Compass, located in instrument cluster
• Defogger, rear-window electric
• Door locks, power
• Driver Information Center, enhanced, 12.3 diagonal reconfigurable multicolor digital display
• Driver memory recalls driver presets for power driver seat and outside mirrors
• Exterior Temperature Display, located in radio display
• Floor covering, color-keyed carpeting
• GMC Premium information Display- 13.4 diagonal Multicolor touch screen
• Keyless Open and Start includes remote keyless entry
• Mirror, inside rearview auto-dimming
• Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
• Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
• Premium Floor Liners with removable carpet insert, front
• Premium Floor Liners with removable carpet insert, rear
• Rear Seat Reminder
• Remote vehicle starter system
• Seat adjuster, driver 10-way power including lumbar
• Seat adjuster, passenger 10-way power including lumbar
• Seat trim, Perforated front Leather
• Seating, heated driver and front outboard passenger
• Seats, front bucket with center console
• Seats, heated second row outboard seats
• Seats, ventilated driver and front passenger
• SiriusXM Trial Subscription
• Steering column, manual Tilt-Wheel and telescoping
• Steering wheel audio controls
• Steering wheel, heated
• Steering wheel, wrapped
• Theft-deterrent system, unauthorized entry
• USB ports, (2) charge-only, rear
• USB Ports, 2 (first row) located on console
• USB Ports, 2, Charge/Data ports located inside center console
• Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
• Window, power front, passenger express up/down
• Windows, power front, drivers express up/down
• Windows, power rear, express down
• Wireless Charging
• Wireless phone projection for Apple CarPlay and Android Auto
• Air filter, heavy-duty
• Air filtration monitoring
• Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
• Auto-locking rear differential
• Brake lining wear indicator
• Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
• Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
• Cooling, auxiliary external transmission oil cooler
• Cooling, external engine oil cooler
• Four wheel drive
• Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
• GVWR, 10,850 lbs. (4921 kg) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18, 20 or 22 wheels.)
• Hill Descent Control
• Pickup bed includes bed assist step
• Push Button Start
• Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
• Recovery hooks, Red
• Skid Plates protect the oil pan, front axle and transfer case
• Suspension, Off-Road includes twin-tube shocks
• Trailer brake controller, integrated
• Transfer case, two-speed active, electronic Autotrac with push button control
• Transmission, 10-Speed automatic
• Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
• Daytime Running Lamps, LED signature lighting
• Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
• Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)
• Front and Rear Park Assist, ultrasonic
• Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
• Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
• Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
• Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)
• LED Signature DRL's
• OnStar Equipped (subscription required)
• OnStar Services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)
• Rear Cross Traffic Alert
• Rear Seat Belt Indicator
• Safety Alert Seat
• Seat Belt Adjustable Guide Loops, front row only
• Tire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)
• Trailer Camera Provisions and trailer viewing software
• Trailer Side Blind Zone Alert
• Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
• AT4 PREFERRED EQUIPMENT GROUP includes standard equipment
• WINDOW, POWER, REAR SLIDING WITH REAR DEFOGGER
• SEATS, FRONT BUCKET with center console (STD)
• ASSIST STEPS, POWER RETRACTABLE, BLACK includes LED lighting
• WINTER GRILLE COVER
• SUNROOF, POWER
• TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15 Diagonal Head-Up Display
• REAR CAMERA MIRROR inside rearview auto-dimming with full camera display
• REAR AXLE, 3.42 RATIO
• STERLING METALLIC
• JET BLACK WITH KALAHARI ACCENTS, PERFORATED FRONT LEATHER SEAT TRIM
• GVWR, 11,350 LBS. (5148 KG)
• ENGINE BLOCK HEATER
• EXHAUST BRAKE
• ALTERNATOR, 220 AMP
• AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote, (A48) rear sliding power window and (U01) Roof Marker Lamps
• WHEELS, 20 (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS 8 spokes (STD)
• TIRES, LT275/65R20 E 126/123 BF GOODRICH OFF-ROAD T/A KO3
• LAMPS, SMOKED AMBER ROOF MARKER, (LED)
• UNIVERSAL HOME REMOTE
• MULTICOLOR 15 DIAGONAL HEAD-UP DISPLAY
• LICENSE PLATE KIT, FRONT, INCANDESCENT LIGHTING

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