2026 GMC Sierra 3500HD

Condition New
Exterior Frostbite White
Transmission Automatic
Drive Train Four-wheel Drive
Trim AT4
Engine Diesel
6.6L V8
Brakes 4-Wheel Anti-Lock Brakes

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2026 GMC Sierra 3500HD

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Vehicle Overview

Sterling GMC AT4: rugged, refined everyday versatility

Meet the 2026 GMC AT4 in striking Frostbite White with a Black interior — a true blend of rugged capability and premium comfort. Ready for the trail with full-time 4WD, locking differential, LT275/65R20 tires, and 11.2" ground clearance, this AT4 also carries a full-size spare for real-world peace of mind. Inside you’ll find heated leather seats, a heated leather steering wheel, multi-adjustable power seats with lumbar, keyless entry and remote start with climate control for instant comfort. Safety and confidence come standard — ABS, traction and stability control, multiple airbags and an electronic parking aid — plus an AM/FM system with subwoofer for great road-trip sound. Backed by GMC warranties (36/36k basic, 60/60k powertrain, 72 months rust) — come see it and take it for a test drive today.
  • Checkmark Bold, Sleek Beauty
  • Checkmark Rugged, Head-turning Presence
  • Checkmark Luxurious, Comfortable Drive
  • Checkmark Bold, Quiet Confidence

Vehicle Equipment

Standard Equipment
Child Safety Door Locks
Vehicle Anti-Theft
4WD/AWD
ABS Brakes
Locking Differential
Traction Control
Vehicle Stability Control System
Driver Airbag
Front Side Airbag
Front Side Airbag With Head Protection
Front Side Airbag With Head Protection
Passenger Airbag
Electronic Parking Aid
Keyless Entry
Remote Ignition
Air Conditioning
Separate Driver/Front Passenger Climate Controls
Cruise Control
Tachometer
Heated Steering Wheel
Leather Steering Wheel
Steering Wheel Mounted Controls
Telescopic Steering Column
Tire Pressure Monitor
Trip Computer
AM/FM Radio
Subwoofer
Driver Multi-Adjustable Power Seat
Front Heated Seat
Front Power Lumbar Support
Leather Seat
Passenger Multi-Adjustable Power Seat
Automatic Headlights
Daytime Running Lights
Full Size Spare Tire
Power Windows
Heated Exterior Mirror
Electrochromic Interior Rearview Mirror
Anti-Brake System
4-Wheel ABS
Steering Type
R&P
Front Brake Type
Disc
Rear Brake Type
Disc
Front Suspension
IND
Rear Suspension
IND
Front Spring Type
Coil
Rear Spring Type
Coil
Tires
Lt275/65r20
Front Headroom
43.00 In.
Rear Headroom
40.10 In.
Front Legroom
44.50 In.
Rear Legroom
43.40 In.
Front Shoulder Room
66.00 In.
Rear Shoulder Room
65.30 In.
Front Hip Room
61.20 In.
Rear Hip Room
60.20 In.
Curb Weight-automatic
7,417 Lbs
Overall Length
250.80 In.
Wheelbase
159.00 In.
Ground Clearance
11.20 In.
Overall Length
250.80 In.
Standard Seating
5

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