New2026 ModelLHD

GMC Sierra 3500HD

GMC SIERRA 3500HD

2026 Model

Left Hand Drive / Converted Right Hand Drive·Heavy-Duty Truck·5 Variants

Last updated

New2026 ModelLHD

GMC Sierra 3500HD

Petrol
5 Seater
10-speed Allison automatic
6600 cc
401 HP @ 5200 RPM
464 lb-ft @ 4000 RPM
6 colors available
$85,900Ex-Works, USA
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GMC Sierra 3500HD Color Variants - Coastal Dune
GMC Sierra 3500HD Color Variants - Onyx Black
GMC Sierra 3500HD Color Variants - Sterling Metallic
GMC Sierra 3500HD Color Variants - Summit White
GMC Sierra 3500HD Color Variants - Titanium Rush Metallic
GMC Sierra 3500HD Color Variants - Volcanic Red Tincoat
1 / 6
Coastal Dune
Detailed Specifications
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The 2026 GMC Sierra 3500 HD represents the ultimate in GMC's heavy-duty truck lineup, offering exceptional towing capability up to 36,000 pounds. Available in six distinct trims with multiple cab configurations and single/dual rear wheel options, this truck is designed for the most demanding commercial and heavy-duty applications.

Variant Overview

Available Trims

  • Pro
  • SLE
  • SLT
  • AT4
  • Denali
  • Denali Ultimate

Note: AT4X trim is not available on Sierra 3500 HD models

Core Specifications by Variant

Pro

Fuel Type: Gasoline or Diesel
Seating: 3, 6, or 8-seater (varies by cab configuration)
Transmission: 10-speed Allison 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

SLE

Fuel Type: Gasoline or Diesel
Seating: 3, 6, or 8-seater (varies by cab configuration)
Transmission: 10-speed Allison 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 only)
Transmission: 10-speed Allison 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 only)
Transmission: 10-speed Allison 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 only)
Transmission: 10-speed Allison 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 only)
Transmission: 10-speed Allison 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)

Color Distribution by Trim

Pro, SLE, SLT, AT4

  • All universal colors plus Coastal Dune

Denali and Denali Ultimate

  • All universal colors plus Glacier White Tricoat (premium option)

Cab and Wheel Configurations

Regular Cab (Pro and SLE only)

  • Seating: 3-seater
  • Bed: 8-foot long bed only
  • Wheels: Single Rear Wheel (SRW) or Dual Rear Wheel (DRW)
  • Drivetrain: RWD or 4WD

Double Cab (Pro and SLE only)

  • Seating: 6-seater
  • Bed: 8-foot long bed only
  • Wheels: Single Rear Wheel (SRW) or Dual Rear Wheel (DRW)
  • Drivetrain: RWD or 4WD (2026 eliminates RWD on SLE)

Crew Cab (All trims)

  • Seating: 6-seater
  • Bed: 6'9" standard bed or 8-foot long bed
  • Wheels: Single Rear Wheel (SRW) or Dual Rear Wheel (DRW)
  • Drivetrain: RWD or 4WD (2026 eliminates RWD on SLE and SLT)

Chassis Cab (Pro and SLE only)

  • Configuration: Regular or Crew Cab
  • Wheels: Dual Rear Wheel (DRW) only
  • Purpose: Commercial upfitting applications

Additional Specifications

Drivetrain Changes for 2026

  • Pro: RWD or 4WD available across all configurations
  • SLE: 4WD only (RWD eliminated except Chassis Cab)
  • SLT: 4WD only (RWD eliminated)
  • AT4: 4WD standard
  • Denali/Denali Ultimate: 4WD standard

Maximum Towing Capacity by Configuration

  • Regular Cab DRW: Up to 36,000 lbs (gooseneck/fifth-wheel), 32,000 lbs (fifth-wheel)
  • Double Cab DRW: Up to 31,580 lbs (gooseneck/fifth-wheel)
  • Crew Cab DRW: Up to 30,800 lbs (gooseneck/fifth-wheel)
  • Crew Cab SRW: Up to 21,300 lbs (conventional)

Payload Capacity

  • Regular Cab DRW: Up to 7,290 lbs
  • Double Cab DRW: Up to 6,820 lbs
  • Crew Cab DRW: Up to 6,378 lbs (varies by trim)
  • Crew Cab SRW: Up to 4,127 lbs

Dimensions by Configuration

Regular Cab

  • Overall Length: 236.3"
  • Wheelbase: 141.5"
  • Ground Clearance: 11.2" (SRW), 10.5" (DRW)

Double Cab

  • Overall Length: 257.2"
  • Wheelbase: 162.5"
  • Ground Clearance: 11.2" (SRW), 10.4" (DRW)

Crew Cab

  • Overall Length: 250.8"-266.8"
  • Wheelbase: 159.0"-172.0"
  • Ground Clearance: 11.1"-11.2" (SRW), 10.4" (DRW)

Fuel Tank Capacity

  • Standard: 36 gallons
  • Optional: 48 gallons (available on most configurations)

Key Features by Variant

Pro Standard Features

Capability

  • Trailering Package with integrated Trailer Brake Controller
  • Best-in-class HD cargo bed volume
  • CornerStep rear bumper with built-in steps

Technology

  • 7" diagonal color touchscreen infotainment system
  • Wireless Apple CarPlay and Android Auto compatibility
  • Bluetooth streaming audio

Safety

  • Automatic Emergency Braking
  • Forward Collision Alert
  • Following Distance Indicator

Available Options

  • Duramax 6.6L Turbo-Diesel V8 engine
  • Adaptive Cruise Control with trailering capability

SLE Additional Features

Technology Upgrades

  • 13.4" diagonal Premium GMC Infotainment System with Google built-in
  • 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 including 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 support
  • 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 with perforated leather appointments
  • MultiPro Tailgate Audio System by Kicker

AT4 Off-Road Features

Off-Road Capability

  • Standard 4WD with two-speed transfer case
  • Off-Road Suspension Package with twin-tube Rancho shocks
  • Skid plates for enhanced underbody protection
  • Single Rear Wheel configuration only (no DRW available)

Interior

  • Jet Black interior with Kalahari accents
  • Heated and ventilated perforated leather front seats

Technology

  • Up to 14 camera views with HD Surround Vision
  • Standard Adaptive Cruise Control with trailering

Available Options

  • 15" diagonal Head-Up Display with off-road inclinometer
  • 20" gloss-black aluminum wheels with available BFGoodrich off-road tires

Denali Luxury Features

Premium Materials

  • Signature Denali grille with chrome accents
  • 20" Ultra-Bright machined aluminum wheels with bright chrome inserts
  • Denali-exclusive authentic wood and patterned aluminum trim

Interior

  • Forge perforated leather seating surfaces
  • 12-way heated and ventilated power front seats

Technology

  • 12-speaker Bose Premium Series sound system
  • Enhanced infotainment system features

Available Configurations

  • Available in both Single and Dual Rear Wheel configurations

Denali Ultimate Top-Tier Features

Advanced Luxury

  • Signature Vader Chrome grille with high gloss black surround
  • Exclusive 20" Ultra-Bright machined aluminum wheels with gloss-black inserts
  • Standard Duramax 6.6L Turbo-Diesel V8 engine

Premium Interior

  • Alpine Umber full-grain leather seating surfaces
  • Authentic Paldao wood trim with laser-etched patterns
  • Best-in-class 16-way power front seats with massage feature

Technology

  • 12-speaker Bose Premium Series with Centerpoint surround sound
  • Illuminated power assist steps
  • MultiPro Tailgate Audio System by Kicker standard

Available Options

  • Auxiliary trailer camera provisions
  • Power sunroof
  • Rear Camera Mirror

Interior Color Options by Variant

Pro

  • Jet Black cloth seat trim

SLE

  • Jet Black cloth seat trim
  • Dark Walnut/Slate (available option)

SLT

  • Jet Black leather-appointed seating surfaces

AT4

  • Jet Black with Kalahari accents, perforated leather seating surfaces

Denali

  • Jet Black, Forge perforated leather seating surfaces

Denali Ultimate

  • Alpine Umber full-grain leather seating surfaces

Safety & Technology Features

Standard Safety Features (Varies by Trim)

  • Automatic Emergency Braking
  • Forward Collision Alert
  • Lane Keep Assist with Lane Departure Warning
  • Following Distance Indicator
  • Front Pedestrian Braking
  • Tire Pressure Monitoring System with Tire Fill Alert
  • Teen Driver technology

Available Advanced Safety

  • Enhanced Automatic Emergency Braking
  • Blind Zone Alert
  • Rear Cross Traffic Alert
  • HD Surround Vision with up to 14 camera views
  • Adaptive Cruise Control with trailering capability
  • Front and Rear Park Assist
  • Safety Alert Seat

Infotainment Systems

  • Pro: 7" diagonal touchscreen
  • SLE and Above: 13.4" diagonal Premium GMC Infotainment System with Google built-in
  • Wireless Apple CarPlay and Android Auto
  • Wi-Fi hotspot capability
  • SiriusXM with 360L

Audio Systems

  • Standard: 6-speaker system
  • Available: Bose Premium sound system (7-speaker)
  • Denali/Denali Ultimate: 12-speaker Bose Premium Series

Advanced Trailering Technology

ProGrade Trailering System (SLT and above)

  • In-Vehicle Trailering App
  • Trailer Light Test
  • Trailer Tire Pressure Monitoring
  • Hitch Guidance with Hitch View

Camera Systems

  • Up to 14 camera views available
  • Transparent Trailer View
  • Bed View Camera
  • 360-degree HD Surround Vision

The 2026 GMC Sierra 3500 HD continues to lead the heavy-duty segment with exceptional capability, advanced technology, and comprehensive trim offerings. Each variant is designed to meet specific needs, from the work-focused Pro to the luxury-appointed Denali Ultimate, all while maintaining the exceptional towing and payload capacity that defines the 3500 HD series.

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