2021 GMC Sierra 2500 Accessories & Parts
2021 GMC Sierra 2500 Parts
2021 GMC Sierra 2500 Wheels & Tires
2021 GMC Sierra 2500 Exterior Accessories
Running Boards- Off-Road Bumpers
- Custom Hoods
- Towing & Hitches
- Body Kits
- Mirrors
- Grille Guards
- Bed Accessories
- Chrome Trim
- Bug Deflectors
- Commercial Van Equipment
- Custom Grilles
- Tonneau Covers
- Wind Deflectors
- Fender Flares
- Roof Racks
- Winches
- Car Covers
- Bike Racks
- Light Covers
- Wiper Blades
- Mud Flaps
- Armor & Protection
- Car Wraps
- Spoilers
- License Plates & Frames
- Emblems & Logos
- Sunroof Visors
- Spare Tire Covers & Carriers
- Custom Horns
- Car Tents
- Snow Plows
- Auto Detailing
2021 GMC Sierra 2500 Automotive Lighting
2021 GMC Sierra 2500 Body Parts
2021 GMC Sierra 2500 Interior Accessories
2021 GMC Sierra 2500 Maintenance
2021 GMC Sierra 2500 Audio & Electronics
2021 GMC Sierra 2500 Automotive Tools
- Diagnostic & Testing Tools
- Engine Service Tools
- Pullers & Installers
- Suspension & Steering Service Tools
- A/C Tools & Equipment
- Automotive Lifts & Stands
- Fuel System Service
- Wheel & Tire Service Tools
- Oil Change Tools
- Jacks
- Brake Service Tools
- Spark Plug & Ignition Tools
- Cooling System Service Tools
- Lockout Kits
- Exhaust System Service Tools
- Auto Glass Tools
- Electrical System Tools
- Transmission & Drivetrain Service Tools
- EV Charging
- Automotive Paint
- Repair Manuals
- Battery Chargers & Jump Starters
- Creepers
- Key Cutting Machines
- Dollies & Movers
- Auto Detailing
- Dent Repair Tools
- Service Carts
- Vehicle & Parts Protection
Popular Accessories
- Replacement Headlights
- Factory Tail Lights
- LED Tail Lights
- Mirror Glass
- Black Tail Lights
- Fiber Optic Tail Lights
- Rear Bumpers
- Engine Cooling
- Parking Brakes
- Trunk & Tailgate Moldings
- All-Weather Mats
- Battery Cables
- Door Handle Covers
- Driveline & Axles
- Driveline & Axles
- Fuel Delivery
- Inner Fenders
- Mirror Covers
2021 GMC Sierra 2500 Specifications
| Model | Sierra 2500 HD | |
|---|---|---|
| Submodel | Base, SLE, SLT, AT4, Denali | |
| Body Type | 2-door Regular Cab 2+2-door Double Cab 4-door Crew Cab | |
| Engine | 6.6-liter V8 | 6.6-liter V8 Duramax |
| Fuel | Gasoline | Diesel |
| Transmission | 6-speed Automatic Hydra-Matic 6L90 | 10-speed Automatic Allison 10L1000 |
| Drivetrain | RWD / 4WD | |
| Power | 401 hp @ 5200 rpm | 445 hp @ 2800 rpm |
| Torque | 464 lb-ft @ 4000 rpm / 630 Nm | 910 lb-ft @ 1600 rpm / 1234 Nm |
| 0-60 | 6.3 sec | 6.0 sec |
| Top Speed | 100 mph | |
| Weight | 6092 - 6570 lbs | 6955 - 7467 lbs |
| GVWR | 10000 - 11350 lbs | |
| Payload | Regular Cab - 3979 lbs Double Cab - 3854 lbs Crew Cab - 3862 lbs | Regular Cab - 3715 lbs Double Cab - 3657 lbs Crew Cab - 3597 lbs |
| Towing/Trailering | Regular Cab - 14500 lbs Double Cab - 14500 lbs Crew Cab - 14500 lbs | Regular Cab - 14500 lbs Double Cab - 14500 lbs Crew Cab - 18500 lbs |
| Wheelbase | Regular Cab: 141.5 in / 3595 mm (long box) Double Cab: 149.4 in / 3795 mm (std. box) 162.4 in / 4127 mm (long box) Crew Cab: 158.9 in / 4037 mm (std. box) 172 in / 4369 mm (long box) | |
| Bed Length | 82.3 in - standard box 98.3 in - long box | |
| Bed Width | 71.40 in | |
| Bed Height | 21.00 in | |
| Width | 81.9 in / 2079 mm (SRW) 96.7 in / 2457 mm (DRW) | |
| Length | Regular Cab: 235.5 in / 5982 mm (long box) Double Cab: 240.4 in / 6107 mm (std. box) 256.4 in / 6514 mm (long box) Crew Cab: 250 in / 6349 mm (std. box) 266 in / 6756 mm (long box) | |
| Height | 79.8 in / 2027 mm | |
| Tire Size | LT235/80R17 LT265/70R17 LT245/75R17 LT275/70R18 LT275/65R20 | |
| Wheel Bolt Pattern | 8x180 | |
| Seats | Regular Cab - 3 Double Cab - 5 (6) Crew Cab - 5 (6) | |
| MPG (Combined) | 12 mpg | 15 mpg |
| Lights | High-Intensity Discharge (HID) projector-beam headlamps. Includes GMC signature LED lighting | |
| Tank Capacity | 36 gal | Regular Cab - 28 gal Double Cab: 29.4 gal (std box) 36 gal (long box) Crew Cab - 36 gal |
| Brakes | 4-wheel disc with 4-wheel antilock | |
| Brake Rotor Size | Front: 14 x 1.6 in / 355 x 40 mm Rear: 14.1 x 1.3 in / 360 x 34 mm (Single Rear Wheel) Rear: 14 x 1.6 in / 355 x40 mm (Dual Rear Wheel) | |
| Suspension | Front: Short long arms independent with torsion bars Rear: Semi-elliptic three-stage multi-leaf spring | |
| Safety/Security | Automatic Emergency Braking Bed View Camera Following Distance Indicator Forward Collision Alert Front and Rear Park Assist HD Rear Vision Camera HD Surround Vision Hitch Guidance Hitch Guidance with Hitch View LED Daytime Running Lamps Lane Change Alert with Side Blind Zone Alert Lane Departure Warning OnStar® & GMC Connected Services capable Rear Cross Traffic Alert Safety Alert Seat StabiliTrak, electronic stability control system with traction control Teen Driver Tire Pressure Monitoring System Trailer Tire Pressure and Temperature Sensors | |
| Warranty | Bumper-to-Bumper Limited - 3 Years/36,000 Miles Corrosion Protection - 3 Years/36,000 Miles Rust-Through - 6 Years/100,000 Miles Powertrain/Drivetrain Limited - 5 Years/60,000 Miles; HD Duramax Diesel: 5 Years/100,000 Miles Roadside Assistance Program - 5 Years/60,000 Miles | |