Condition New
MPG 15 - 20
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

Rugged GMC Terrain AT4 in Sterling Metallic.

Meet the 2026 GMC AT4 in Frostbite White with a Black leather interior — a tough, trail-ready pickup that still pampers you on the road. With full-time 4WD, locking differential, LT275/65R20 tires and 11.2" of ground clearance, this AT4 handles off-road challenges with confidence while ABS, traction/stability control and a full airbag suite keep you safe. Inside you’ll enjoy heated leather seats, a heated leather steering wheel, power-adjustable seats, keyless entry with remote start/climate control and a premium audio system with subwoofer — comfort and convenience for five. Ready to work or play — stop in or call today to experience it for yourself.
  • Checkmark Bold head-turning stance
  • Checkmark Sleek night-driving allure
  • Checkmark Beastly street presence
  • Checkmark Commanding road charisma

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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