The 2026 GMC Sierra 3500 HD Chassis Cab is a heavy-duty commercial truck designed for demanding workloads, exceptional durability, and reliable performance. It offers powerful engine options—including a 6.6L V8 gas engine and a 6.6L Duramax Turbo-Diesel V8—paired with an Allison 10-speed automatic transmission. With its robust frame, rear-wheel or four-wheel drive configurations, and a chassis engineered to accommodate various body upfits, this vehicle is ideally suited for utility bodies, flatbeds, service trucks, and other commercial applications.
|
Basic Info |
|
|
Engine |
6.6L Direct-Injection V8 Gasoline |
|
Transmission |
Allison® 10-Speed Automatic Transmission |
|
Vehicle Type |
Heavy-Duty Commercial Chassis Cab Truck (3500 HD Series) |
|
No. of Doors |
2 Doors |
|
Status |
Released |
|
Release Date |
2026 Model Year |
|
Fuel Type |
Unleaded Gasoline |
|
Colors |
Summit White, Onyx Black, Quicksilver Metallic, Titanium Rush Metallic, Volcanic Red Tintcoat |
|
Dimensions & Weight |
|
|
Curb Weight |
6,650–7,200 lbs |
|
Overall Height |
80.1 in |
|
Overall Length |
239.8 in |
|
Overall Width |
80.8 in (w/o mirrors, SRW) / 89.15 in (DRW Dual Rear Wheel) |
|
Wheelbase |
137.5 in / 146.0 in / 162.0 in / 177.0 in |
|
Ground Clearance |
8.15 in |
|
Shoulder Room |
Front: 66.0–66.1 in / Rear: 65.3 in |
|
Headroom |
Front: 43.0 in / Rear: 40.1 in |
|
Legroom |
Front: 44.5 in / Rear: 43.4 in |
|
Hip Room |
Front: 60.9–61.2 in / Rear: 60.2 in |
|
Front Track |
68.6 in |
|
Rear Track |
67.6 in (Dual Rear Wheel Axle) |
|
Engine & Battery |
|
|
Power |
401 hp @ 5,200 rpm |
|
Torque |
464 lb-ft @ 4,000 rpm
|
|
Drivetrain |
Rear-Wheel Drive (RWD) / Part-Time 4-Wheel Drive (4WD) |
|
Battery Type |
NA |
|
Battery Capacity |
NA |
|
Wheels & Tires |
|
|
Tire Size |
LT235/80R17E All-Terrain (Dual Rear Wheel) / LT265/70R17 |
|
Wheel Size |
17-inch |
|
Wheel Type |
Heavy-Duty Painted Steel Wheels (Aluminum Available) |
|
Steering |
|
|
Turning Diameter |
47.0 ft – 57.5 ft |
|
Steering Type |
Heavy-Duty Hydraulic Power Recirculating Ball Steering |
|
Transmission |
|
|
Gearbox |
10-Speed |
|
Transmission Type |
Allison® 10-Speed Heavy-Duty Automatic with Tow/Haul Mode, Grade Braking & Integrated PTO |
|
Performance |
|
|
Top Speed |
Around 98 mph |
|
Acceleration 0–100 km/h (0–62 mph) |
6.8–8.2 sec |
|
Fuel Economy |
|
|
City |
NA |
|
Highway |
NA |
|
Combined |
NA |
|
Capacities |
|
|
Seating Capacity |
3 Passengers |
|
Cargo Volume |
NA |
|
Maximum Towing Capacity |
Up to 36,000 lbs |
|
Fuel Tank Capacity |
40.0 Gallons |
|
Suspension |
|
|
Front |
Independent Short-Long Arm (SLA) with Torsion Bars & Heavy-Duty Anti-Roll Bar |
|
Rear |
Hypoid Heavy-Duty Rear Drive Axle with 3-Stage Multi-Leaf Springs |
|
Brakes |
|
|
Brake Type |
4-Wheel Anti-Lock Heavy-Duty Power Disc Brakes |
|
Brake System |
4-Wheel ABS with Hydro-Boost Assist, Integrated Trailer Brake Controller & Exhaust Brake |
|
Exterior Features |
|
|
Alloy Wheels |
Yes |
|
Sun/Moon Roof |
No |
|
Spoiler |
No |
|
Front Camera |
Yes |
|
Rear Camera |
Yes |
|
Roof Antenna |
Yes |
|
Rear Parking Aid |
Yes |
|
Intermittent Wipers |
Yes |
|
Power Folding Mirrors |
Yes |
|
LED Headlights |
Yes |
|
Interior Features |
|
|
Cruise Control |
Yes |
|
Alarm |
Yes |
|
Keyless Entry |
Yes |
|
Adjustable Steering Wheel |
Yes |
|
Parking Aid |
Yes |
|
Power Mirrors |
Yes |
|
Power Windows |
Yes |
|
Vanity Mirror |
Yes |
|
Power Steering |
Yes |
|
Keyless Start |
Yes |
|
Power Door Locks |
Yes |
|
Cup Holders |
Yes |
|
Glove Box |
Yes |
|
Digital Display |
Yes |
|
Heated Seats |
Yes |
|
Heated Steering Wheel |
Yes |
|
Climate Control |
Yes |
|
Normal/Sport Modes |
Yes |
|
Multi-Function Steering |
Yes |
|
Trip Computer |
Yes |
|
Anti-Theft System |
Yes |
|
Entertainment Features |
|
|
Android Auto |
Yes |
|
Apple CarPlay |
Yes |
|
AM/FM Stereo |
Yes |
|
MP3 Player |
Yes |
|
Bluetooth |
Yes |
|
Navigation System |
Yes |
|
Voice Command |
Yes |
|
WiFi Hotspot |
Yes |
|
LCD |
Yes |
|
Speakers Front |
Yes |
|
Speakers Rear |
Yes |
|
Safety Features |
|
|
Brake Assist |
Yes |
|
Electronic Stability Control |
Yes |
|
Child Safety Lock |
Yes |
|
Lane Departure Warning |
Yes |
|
ABS |
Yes |
|
Driver Airbags |
Yes |
|
Passenger Airbags |
Yes |
|
Pre-Collision System |
Yes |
|
Pedestrian Detection |
Yes |
|
Defogger |
Yes |
|
Road Sign Assist |
No |
|
Smart Stop Technology |
Yes |
|
Automatic High Beams |
Yes |
Rate it