GMC Sierra 2500HD
GMC SIERRA 2500HD
2025 ModelLeft Hand Drive / Converted Right Hand Drive·Heavy-Duty Truck·6 Variants
Last updated

The 2026 GMC Sierra 2500 HD continues GMC's tradition of delivering exceptional heavy-duty capability with minimal changes from the previous model year. This lineup offers seven distinct variants designed to meet diverse professional and personal needs, from work-focused configurations to luxury-oriented trims.
Variant Overview
Available Trims
- Pro
- SLE
- SLT
- AT4
- Denali
- AT4X
- Denali Ultimate
Core Specifications by Variant
Pro
Fuel Type: Gasoline
Seating: 3 or 6-seater (Regular, Double, or Crew Cab)
Transmission: 10-speed automatic
Power: 401 HP (299 kW)
Torque: 464 lb-ft (629 Nm)
Engine: 6.6L V8
Steering: LHD
Body Type: Pickup Truck
SLE
Fuel Type: Gasoline or Diesel
Seating: 3 or 6-seater (Regular, Double, or Crew Cab)
Transmission: 10-speed automatic
Power: 401 HP (299 kW) / 470 HP (350 kW) diesel
Torque: 464 lb-ft (629 Nm) / 975 lb-ft (1322 Nm) diesel
Engine: 6.6L V8 / 6.6L Duramax Turbo-Diesel V8
Steering: LHD
Body Type: Pickup Truck
SLT
Fuel Type: Gasoline or Diesel
Seating: 6-seater (Crew Cab)
Transmission: 10-speed automatic
Power: 401 HP (299 kW) / 470 HP (350 kW) diesel
Torque: 464 lb-ft (629 Nm) / 975 lb-ft (1322 Nm) diesel
Engine: 6.6L V8 / 6.6L Duramax Turbo-Diesel V8
Steering: LHD
Body Type: Pickup Truck
AT4
Fuel Type: Gasoline or Diesel
Seating: 6-seater (Crew Cab)
Transmission: 10-speed automatic
Power: 401 HP (299 kW) / 470 HP (350 kW) diesel
Torque: 464 lb-ft (629 Nm) / 975 lb-ft (1322 Nm) diesel
Engine: 6.6L V8 / 6.6L Duramax Turbo-Diesel V8
Steering: LHD
Body Type: Pickup Truck
Denali
Fuel Type: Gasoline or Diesel
Seating: 6-seater (Crew Cab)
Transmission: 10-speed automatic
Power: 401 HP (299 kW) / 470 HP (350 kW) diesel
Torque: 464 lb-ft (629 Nm) / 975 lb-ft (1322 Nm) diesel
Engine: 6.6L V8 / 6.6L Duramax Turbo-Diesel V8
Steering: LHD
Body Type: Pickup Truck
AT4X
Fuel Type: Gasoline or Diesel
Seating: 5-seater (Crew Cab only)
Transmission: 10-speed automatic
Power: 401 HP (299 kW) / 470 HP (350 kW) diesel
Torque: 464 lb-ft (629 Nm) / 975 lb-ft (1322 Nm) diesel
Engine: 6.6L V8 / 6.6L Duramax Turbo-Diesel V8
Steering: LHD
Body Type: Pickup Truck
Denali Ultimate
Fuel Type: Gasoline or Diesel
Seating: 6-seater (Crew Cab)
Transmission: 10-speed automatic
Power: 401 HP (299 kW) / 470 HP (350 kW) diesel
Torque: 464 lb-ft (629 Nm) / 975 lb-ft (1322 Nm) diesel
Engine: 6.6L V8 / 6.6L Duramax Turbo-Diesel V8
Steering: LHD
Body Type: Pickup Truck
Available Colors by Variant
Universal Colors (All Variants)
- Summit White
- Onyx Black
- Sterling Metallic
- Volcanic Red Tintcoat
New for 2026
- Coastal Dune (replacing Thunderstorm Gray)
- Glacier White Tricoat (replacing White Frost Tricoat)
Additional Color Options by Trim
Pro, SLE, SLT, AT4, AT4X
- Coastal Dune available
Denali and Denali Ultimate
- Glacier White Tricoat available (premium option)
Cab and Bed Configurations
Regular Cab (Pro and SLE only)
- 3-seater
- 8-foot long bed only
- Single row of seating
Double Cab (Pro and SLE only)
- 6-seater
- Standard 6'9" bed or 8-foot long bed
- Extended cab with rear seating
Crew Cab (All trims)
- 6-seater (5-seater in AT4X)
- Standard 6'9" bed or 8-foot long bed
- Full four-door configuration
Additional Specifications
Drivetrain
- Standard: RWD (available 4WD)
- AT4 and AT4X: 4WD standard
Towing Capacity by Configuration
- Regular Cab: Up to 22,390 lbs (gooseneck/fifth-wheel)
- Double Cab: Up to 18,600 lbs (gooseneck/fifth-wheel)
- Crew Cab: Up to 21,870 lbs (gooseneck/fifth-wheel)
- AT4X: Up to 18,500 lbs (conventional), 18,000 lbs (gooseneck/fifth-wheel)
Dimensions by Configuration
Regular Cab
- Overall Length: 236.3"
- Wheelbase: 142.0"
- Ground Clearance: 10.2"
- Max Payload: 4,049 lbs
Double Cab
- Overall Length: 241.2"-257.2"
- Wheelbase: 149.4"-162.5"
- Ground Clearance: 10.1"-10.2"
- Max Payload: 3,848 lbs
Crew Cab
- Overall Length: 250.8"-266.8"
- Wheelbase: 159.0"-172.0"
- Ground Clearance: 10.1"-10.4"
- Max Payload: 3,153-3,863 lbs
Fuel Tank Capacity
- Standard: 36 gallons
Key Features by Variant
Pro Standard Features
Capability
- Trailering Package with Trailering Mirrors
- Trailer Brake Controller
- Best-in-class HD cargo bed volume
Technology
- 7" diagonal color touchscreen infotainment system
- Wireless Apple CarPlay and Android Auto compatibility
- Bluetooth streaming audio
Available Options
- Duramax 6.6L Turbo-Diesel V8 engine
- Adaptive Cruise Control with trailering capability
SLE Additional Features
Technology Upgrades
- 13.4" diagonal center touchscreen
- 12.3" diagonal digital Driver Information Center
- Traction Select System with Tow/Haul mode
Exterior
- 17" machined aluminum wheels
Available Options
- Up to 13 camera views with transparent trailer view
- MultiPro Tailgate with Audio System by Kicker
- X31 off-road package with twin-tube Rancho shocks and skid plates
SLT Premium Features
Comfort
- 10-way power driver and front outboard passenger heated seats with lumbar
- Heated steering wheel
- ProGrade Trailering System with In-Vehicle Trailering App
Exterior
- 18" machined aluminum wheels with dark grey metallic accents
- MultiPro Tailgate standard
Available Options
- 10-way power-adjustable heated and ventilated bucket seats
- Perforated leather appointments
AT4 Off-Road Features
Off-Road Capability
- Off-Road Suspension Package with twin-tube Rancho shocks
- Skid plates for transfer case and oil pan protection
- Standard 4WD with two-speed transfer case
Interior
- Jet Black interior with Kalahari accents
- Heated and ventilated perforated leather front seats
Technology
- Up to 14 camera views with HD Surround Vision
- 20" gloss-black aluminum wheels with available BFGoodrich off-road tires
Available Options
- 15" diagonal Head-Up Display with off-road inclinometer
Denali Luxury Features
Premium Materials
- Authentic open-pore wood interior trim
- Premium leather seating surfaces
- Jet Black with Forge perforated leather seat trim
Technology
- 12-speaker Bose sound system
- Enhanced infotainment system with Google built-in
Comfort
- Advanced climate control systems
- Power-adjustable seating with multiple configurations
AT4X Ultimate Off-Road
Advanced Off-Road Systems
- Factory-installed 1.5" suspension lift
- Multimatic DSSV dampers
- 35" Goodyear Territory MT tires
- Rear electronic-locking differential
- Enhanced skid plate protection
Interior
- Obsidian Rush interior with full-grain leather seating
- Technical-grain leather accents with authentic Vanta ash wood
- 16-way heated and ventilated power front seats with massage feature
Available Options
- AT4X AEV Edition with stamped steel bumpers and specialized protection
- 18" Salta gloss-black wheels
Denali Ultimate Top-Tier
Luxury Appointments
- Alpine Umber full-grain leather interior
- Plaited contrast stitching
- Embossed and laser-etched topographical map patterns
Advanced Features
- 16-way power front seats with massaging feature
- Best-in-class front head and leg room
- Premium audio system options
Interior Color Options by Variant
Pro
- Jet Black cloth seat trim
SLE
- Jet Black cloth seat trim
SLT
- Jet Black leather-appointed seating surfaces
AT4
- Jet Black with Kalahari accents, perforated front leather seat trim
Denali
- Jet Black, Forge perforated leather seat trim
AT4X
- Obsidian Rush full-grain leather seating with technical-grain leather accents
Denali Ultimate
- Alpine Umber full-grain leather with topographical design elements
Safety & Technology Features
Standard Safety Features (Varies by Trim)
- Automatic Emergency Braking
- Lane Keep Assist with Lane Departure Warning
- Forward Collision Alert
- Following Distance Indicator
- Blind Zone Alert
- Rear Cross Traffic Alert
- Teen Driver technology
Available Advanced Safety
- Adaptive Cruise Control with trailering capability
- HD Surround Vision with up to 14 camera views
- Trailer Sway Control
- Trailer Angle Indicator with Jack-knife Alert
- Front and Rear Park Assist
- Safety Alert Seat
Infotainment Systems
- Pro: 7" diagonal touchscreen
- SLE and Above: 13.4" diagonal Premium GMC Infotainment System
- Google built-in compatibility
- Wireless smartphone integration
- Wi-Fi hotspot capability
The 2026 GMC Sierra 2500 HD lineup maintains its position as a capable heavy-duty truck while offering refined technology and comfort features across all variants. Each trim level provides distinct character and capability, from the work-focused Pro to the luxury-oriented Denali Ultimate.

Variant Configuration
Identical units of this variant in the shipment.
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