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Used 2021 GMC Sierra 2500HD Specs & Features

Starting MSRP

Engine TypeGas
Transmission6-speed shiftable automatic
Drive TypeFour wheel drive
Total Seating5
Basic Warranty3 yr./ 36,000 mi.
Fuel & MPG
Fuel & MPG
Fuel typeRegular unleaded
Range in miles (city/hwy)0/0 mi.
Fuel tank capacity36.0 gal.
Base engine size6.6 L
Base engine typeGas
Horsepower401 hp @ 5,200 rpm
Torque464 lb-ft @ 4,000 rpm
Cam typeOverhead valves (OHV)
Valve timingVariable
Direct injectionStandard
Towing & Hauling
Towing & Hauling
Max Towing Capacity18,500 lbs.
Max Payload Capacity3,760 lbs.
Transmission6-speed shiftable automatic
Drive typeFour wheel drive
On demand 4WDStandard
Electronic hi-lo gear selectionStandard
Automatic locking hubsStandard
Rear locking differentialStandard
Descent controlStandard
Front independent suspensionStandard
Stabilizer bar stabilizer barStandard
Length250.1 in.
Overall width without mirrors81.9 in.
Height79.8 in.
Wheelbase158.9 in.
Bed length82.2 in.
Turning circle52.7 ft.
Ground clearance10.1 in.
Curb weight6,852 lbs.
Maximum towing capacity18,500 lbs.
Maximum payload3,760 lbs.
Gross weight10,650 lbs.
Country of final assemblyUnited States
Exterior Colors
  • Pacific Blue Metallic
  • Quicksilver Metallic
  • Carbon Black Metallic
  • Ebony Twilight Metallic
  • Cayenne Red Tintcoat
  • Hunter Metallic
  • Summit White
  • White Frost Tricoat
  • Onyx Black
Interior Colors
  • Dark Walnut/Dark Ash Grey, premium leather
  • Jet Black, premium leather
Front Seat Dimensions
Front Seat Dimensions
Front head room43.0 in.
Front leg room44.5 in.
Front shoulder room66.0 in.
Front hip room61.2 in.
Premium leatherStandard
Bucket front seatsStandard
8-way power driver seatStandard
Height adjustable driver seatStandard
Driver seat with power adjustable lumbar supportStandard
2 memorized driver seat settingsStandard
8-way power passenger seatStandard
Height adjustable passenger seatStandard
Passenger seat with power adjustable lumbar supportStandard
Multi-level heating driver seatStandard
Multi-level heating passenger seatStandard
Ventilated driver seatStandard
Ventilated passenger seatStandard
Rear Seat Dimensions
Rear Seat Dimensions
Rear head room39.9 in.
Rear leg room43.4 in.
Rear shoulder room65.3 in.
Rear hip room60.2 in.
Split-folding rear seatbackStandard
Folding center armrestStandard
Multi-level heatingStandard
Blind spot and lane departure warnings accident avoidance systemStandard
Rear cross traffic alertStandard
Pre-collision safety systemStandard
Post-collision safety systemStandard
Dual front side-mounted airbagsStandard
Front and rear head airbagsStandard
Passenger airbag occupant sensing deactivationStandard
Stability controlStandard
Traction controlStandard
Child seat anchorsStandard
Rear door child safety locksStandard
4-wheel ABSStandard
Front and rear ventilated disc brakesStandard
Tire pressure monitoringStandard
Dusk sensing headlampsStandard
Auto delay off headlampsStandard
LED headlampStandard
Daytime running lightsStandard
Front fog/driving lightsStandard
Turn signal mirrorsStandard
2 front headrestsStandard
Front height adjustable headrestsStandard
2 rear headrestsStandard
Rear height adjustable headrestsStandard
Rear center 3-point beltStandard
Remote anti-theft alarm systemStandard
Engine immobilizerStandard
In-Car Entertainment
In-Car Entertainment
AM/FM stereoStandard
Bose premium brand speakersStandard
7 total speakersStandard
1 subwoofer(s)Standard
Android Auto/Apple CarPlayStandard
USB connectionStandard
Auxiliary audio input and USB with external media controlStandard
Memory card slotStandard
Satellite radio satellite radioStandard
Speed sensitive volume controlStandard
Power Feature
Power Feature
4 one-touch power windowsStandard
Hands-free entryStandard
Heated mirrorsStandard
Comfort & Convenience
Comfort & Convenience
Keyless ignitionStandard
Tilt and telescopic steering wheelStandard
Audio and cruise controls on steering wheelStandard
Power steeringStandard
Rear view cameraStandard
Front and rear parking sensorsStandard
Wireless chargingStandard
Cruise controlStandard
Universal remote transmitter (for garage door, security system, etc.)Standard
Front and rear cupholdersStandard
Front and rear door pocketsStandard
Front seatback storageStandard
Leather steering wheelStandard
Heated steering wheelStandard
Dual zone front climate controlStandard
Rear ventilation ductsStandard
Sun sensorStandard
Dual illuminating vanity mirrorsStandard
Electrochromatic inside rearview mirrorStandard
Turn signal in mirrorsStandard
Trip computerStandard
External temperature displayStandard
Tires & Wheels
Tires & Wheels
Polished alloy wheelsStandard
20 in. wheelsStandard
All terrain tiresStandard
LT275/65R20 tiresStandard
Fullsize non-matching spare tireStandard
Underbody mounted spare tireStandard
Emergency ServiceStandard
Airbag Deployment NotificationStandard
Stolen Vehicle Tracking/AssistanceStandard
Hands-Free CallingStandard
Roadside AssistanceStandard
Concierge ServiceStandard
Destination guidance (also Turn-by-Turn Navigation)Standard
Destination DownloadStandard
Basic3 yr./ 36,000 mi.
Drivetrain5 yr./ 60,000 mi.
Rust6 yr./ 100,000 mi.
Roadside assistance5 yr./ 60,000 mi.
Free maintenance1 yr./ unlimited mi.
Mechanical Options
Mechanical Options
Trailer Tire Pressure Monitor Sensors +$50
High Idle Switch +$200
Gooseneck Hitch Package +$295
Engine Block Heater +$100
Heavy Duty Front Spring/Camper Package +$45
Gooseneck/5th Wheel Prep Package +$545
Auxiliary Battery +$135
Trailering Wiring Provisions +$35
Dual Alternators +$380
220 Amp Alternator +$150
Duramax 6.6L Turbo-Diesel V8 Engine +$9,750
Snow Plow Prep/Camper Package +$300
Denali Black Diamond Edition +$2,990
GMC Protection Package +$370
Technology Package +$1,475
Denali Ultimate Package +$1,770
Cargo Convenience Package +$515
Interior Options
Interior Options
Lockable Console Vault +$295
Console Insert Organizer Tray +$70
Premium Front Floor Liners +$130
Rear Under Seat Storage +$275
All-Weather Floor Liner +$210
Exterior Options
Exterior Options
Black Front and Rear Molded Splash Guards +$190
Tri-fold Soft Tonneau Cover +$700
20" Chrome Aluminum Wheels +$2,995
20" High Gloss Black Painted Wheels +$1,995
Power Glass Sunroof +$995
20" High Gloss Black Aluminum Wheels w/Machined Finish +$1,995
20" Chrome Aluminum Wheels +$2,995
Body Color Wheel Arch Moldings +$685
Bedside Storage Boxes +$1,250
Tri-Fold Hard Tonneau Cover +$1,100
Auxiliary Trailer Camera +$595
Power Retractable Assist Steps +$1,100
GMC MultiPro Tailgate Step Lights +$200
Cargo Tie-Down Rings +$105
MultiPro Audio System by Kicker +$815
Front License Plate Kit +$0

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