2026 GMC Sierra 2500HD

Condition New
Exterior Black
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 2500HD

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Vehicle Overview

Versatile GMC Acadia AT4 in Onyx Black

Meet the 2026 AT4 in striking Black — where rugged capability meets premium comfort. With full-time 4WD, a locking differential and advanced stability/traction systems, this truck is built to conquer any road or trail. Slide into heated, leather-trimmed seats with cooling, grab the heated leather wheel, and enjoy tech-forward convenience like navigation, keyless entry and remote start with climate control — plus a power sunroof for open-air days. Packed with a comprehensive safety suite and backed by strong factory warranties, the AT4 delivers confidence and class; come take it for a test drive today.
  • Checkmark Bold head-turning stance
  • Checkmark Sleek premium interior
  • Checkmark Family-friendly comfort
  • Checkmark Capable confident ride

Vehicle Equipment

Included Options
Electronic Parking Aid
Front Cooled Seat
Power Sunroof
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
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
Tire Pressure Monitor
Trip Computer
AM/FM Radio
Navigation Aid
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
7,195 Lbs
Overall Length
266.80 In.
Wheelbase
172.00 In.
Ground Clearance
10.10 In.
Overall Length
266.80 In.
Standard Seating
6

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