2026 GMC Sierra 3500 HD

Condition New
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 Sierra 3500 HD

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Vehicle Overview

Spacious, tech-filled family-friendly SUV with style

Meet the 2026 AT4 — rugged capability wrapped in premium comfort. Built to go anywhere with 4WD, locking differential, LT275/65R20 tires and generous ground clearance, it also keeps you safe with ABS, traction and stability control plus a full suite of airbags. Slide into heated leather seats, grip a heated leather steering wheel, and enjoy modern convenience with keyless entry, remote start with climate control and a premium audio system with subwoofer. Backed by strong warranties and smart anti-theft protection, the AT4 is ready for work, weekend adventures, and everything in between — stop by for a test drive today.
  • Checkmark Bold, Rugged Presence
  • Checkmark Sleek Head-Turning Style
  • Checkmark Beast on the Road
  • Checkmark Roomy Family-Ready Cabin

Vehicle Equipment

  • Checkmark
    4WD/AWD
  • Checkmark
    Electronic Parking Aid
  • Checkmark
    Keyless Entry
  • Checkmark
    Front Heated Seat
  • Checkmark
    Child Safety Door Locks
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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