The 2027 GMC Sierra HD is a heavy-duty pickup truck engineered for exceptional towing power, durability, and advanced driving technology. It features an enhanced 6.6-liter V8 gasoline engine that delivers 412 horsepower (hp) and 464 pound-feet (lb-ft) of torque. Additionally, an all-new 8.3-liter 'Duramax' turbo-diesel V8 engine is available, producing 555 horsepower and 1,230 pound-feet of torque; this is paired with an 'Allison' 10-speed automatic transmission. When properly equipped and configured, the Sierra HD 3500 model is capable of towing up to 38,000 pounds (17,236 kilograms).
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Basic Info |
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Engine |
6.6L Overhead Valve V8 Gasoline |
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Transmission |
Allison® 10-Speed Automatic |
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Vehicle Type |
Heavy-Duty Full-Size Pickup Truck (2500HD / 3500HD) |
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No. of Doors |
4-Door |
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Status |
Upcoming |
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Release Date |
2027 Model Year |
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Fuel Type |
Gas |
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Colors |
NA |
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Dimensions & Weight |
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Curb Weight |
NA |
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Overall Height |
NA |
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Overall Length |
NA |
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Overall Width |
NA |
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Wheelbase |
NA |
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Ground Clearance |
NA |
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Shoulder Room |
NA |
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Headroom |
NA |
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Legroom |
NA |
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Hip Room |
NA |
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Front Track |
NA |
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Rear Track |
NA |
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Engine & Battery |
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Power |
412 hp @ 5,200 rpm |
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Torque |
464 lb-ft @ 4,000 rpm
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Drivetrain |
Rear-Wheel Drive (RWD) / Part-Time 4WD |
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Battery Type |
NA |
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Battery Capacity |
NA |
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Wheels & Tires |
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Tire Size |
All-Terrain, Highway-Terrain, or 35-inch Goodyear® Territory MT Tires (AT4X) |
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Wheel Size |
18-inch to 20-inch |
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Wheel Type |
Machined Aluminum Wheels Ultra-Bright Chrome/Gloss Black Wheels |
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Steering |
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Turning Diameter |
NA |
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Steering Type |
Electric Power Steering (EPS) |
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Transmission |
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Gearbox |
Allison® 10-Speed Automatic |
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Transmission Type |
Automatic |
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Performance |
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Top Speed |
NA |
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Acceleration 0–100 km/h (0–62 mph) |
NA |
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Fuel Economy |
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City |
NA |
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Highway |
NA |
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Combined |
NA |
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Capacities |
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Seating Capacity |
3 Persons (Regular Cab) or 5–6 Persons (Double & Crew Cabs) |
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Cargo Volume |
NA |
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Maximum Towing Capacity |
Up to 20,000 lbs (9,071 kg) |
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Fuel Tank Capacity |
36 Gallons (136 Liters) |
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Suspension |
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Front |
NA |
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Rear |
NA |
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Brakes |
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Brake Type |
Disc Brakes |
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Brake System |
eBoost Hydraulic Assist Brakes |
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Exterior Features |
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Alloy Wheels |
Yes |
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Sun/Moon Roof |
Yes |
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Spoiler |
Yes |
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Front Camera |
Yes |
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Rear Camera |
Yes |
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Roof Antenna |
Yes |
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Rear Parking Aid |
Yes |
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Intermittent Wipers |
Yes |
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Power Folding Mirrors |
Yes |
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LED Headlights |
Yes |
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Interior Features |
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Cruise Control |
Yes |
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Alarm |
Yes |
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Keyless Entry |
Yes |
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Adjustable Steering Wheel |
Yes |
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Parking Aid |
Yes |
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Power Mirrors |
Yes |
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Power Windows |
Yes |
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Vanity Mirror |
Yes |
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Power Steering |
Yes |
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Keyless Start |
Yes |
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Power Door Locks |
Yes |
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Cup Holders |
Yes |
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Glove Box |
Yes |
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Digital Display |
Yes |
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Heated Seats |
Yes |
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Heated Steering Wheel |
Yes |
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Climate Control |
Yes |
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Normal/Sport Modes |
Yes |
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Multi-Function Steering |
Yes |
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Trip Computer |
Yes |
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Anti-Theft System |
Yes |
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Entertainment Features |
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Android Auto |
Yes |
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Apple CarPlay |
Yes |
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AM/FM Stereo |
Yes |
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MP3 Player |
Yes |
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Bluetooth |
Yes |
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Navigation System |
Yes |
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Voice Command |
Yes |
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WiFi Hotspot |
Yes |
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LCD |
Yes |
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Speakers Front |
Yes |
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Speakers Rear |
Yes |
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Safety Features |
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Brake Assist |
Yes |
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Electronic Stability Control |
Yes |
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Child Safety Lock |
Yes |
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Lane Departure Warning |
Yes |
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ABS |
Yes |
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Driver Airbags |
Yes |
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Passenger Airbags |
Yes |
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Pre-Collision System |
Yes |
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Pedestrian Detection |
Yes |
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Defogger |
Yes |
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Road Sign Assist |
Yes |
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Smart Stop Technology |
Yes |
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Automatic High Beams |
Yes |
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