GMC Sierra 2500HD ›› 2021 ›› 2021 GMC Sierra 2500HD Specs

2021 GMC Sierra 2500HD

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Specs

Research 2021 GMC Sierra 2500HD specs for the trims available. Choose the desired trim / style from the dropdown list to see the corresponding specs.

Regular Cab Long Box 2-Wheel Drive

Brakes

Rear Drum Diam x Width (in)
Brake Type Pwr
Brake ABS System 4-Wheel
Brake ABS System (Second Line)
Disc - Front (Yes or ) Yes
Disc - Rear (Yes or ) Yes
Front Brake Rotor Diam x Thickness (in) 14 x 1.6
Rear Brake Rotor Diam x Thickness (in) 14.1 x 1.3
Drum - Rear (Yes or )

Cargo Area Dimensions

Tailgate Width (in) - TBD -
Tailgate Width (in)
Cargo Box (Area) Height (in) 21
Cargo Box (Area) Height (in)
Cargo Box Width @ Wheelhousings (in) 50.55
Cargo Box Width @ Wheelhousings (in)
Cargo Box Width @ Floor (in) 71.4
Cargo Box Width @ Floor (in)
Cargo Volume (ft³)
Cargo Box Width @ Top, Rear (in) - TBD -
Cargo Box Width @ Top, Rear (in)
Cargo Box Length @ Floor (in)
Ext'd Cab Cargo Volume (ft³)
Cargo Box Length @ Floor (in) 98.27
Cargo Volume (ft³) 83.5

Cooling System

Total Cooling System Capacity (qts) - TBD -

Electrical

Cold Cranking Amps @ 0° F (2nd) 730
Maximum Alternator Watts N/A
Maximum Alternator Capacity (amps) 170
Maximum Alternator Capacity (amps) 220
Maximum Alternator Capacity (amps) 390
Cold Cranking Amps @ 0° F (2nd)
Cold Cranking Amps @ 0° F (Primary) 730
Cold Cranking Amps @ 0° F (Primary) 720

Emissions

Tons/yr of CO2 Emissions @ 15K mi/year

Engine

SAE Net Horsepower @ RPM 445 @ 2800
SAE Net Horsepower @ RPM 401 @ 5200
SAE Net Torque @ RPM 910 @ 1600
SAE Net Torque @ RPM 464 @ 4000
Engine Oil Cooler - TBD -
Engine Order Code L5P
Engine Order Code L8T
Engine Type Turbocharged Diesel V8
Engine Type Gas V8
Displacement 6.6L/403
Fuel System Direct Injection
Displacement 6.6L/- TBD -

Exterior Dimensions

Overhang, Front (in) - TBD -
Height, Overall (in) 79.94
Width, Max w/o mirrors (in) 81.75
Length, Overall (in) 235.5
Wheelbase (in) 141.55
Ground Clearance, Front (in) 10.19
Ground Clearance, Rear (in) 10.19
Frame Width, Rear (in) - TBD -
Ground to Top of Frame (in) - TBD -
Ground to Top of Load Floor (in) - TBD -
Cab to End of Frame (in) - TBD -
Cab to Axle (in) 55.2
Front Bumper to Back of Cab (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -

Frame

Frame Type - TBD -

Fuel Tank

Fuel Tank Capacity, Approx (gal) 36
Aux Fuel Tank Capacity, Approx (gal)
Fuel Tank Location - TBD -
Aux Fuel Tank Location
Fuel Tank Capacity, Approx (gal) 28

Interior Dimensions

Front Head Room (in) 43.11
Front Shoulder Room (in) 66.06
Passenger Capacity 3
Front Hip Room (in) 60.9
Front Leg Room (in) 44.53

Mileage

EPA Fuel Economy Est - Hwy (MPG)
EPA Fuel Economy Est - City (MPG)
Fuel Economy Est-Combined (MPG)

Steering

Turning Diameter - Wall to Wall (ft) N/A
Steering Type Pwr Recirculating Ball
Steering Ratio (:1), On Center - TBD -
Steering Ratio (:1), At Lock - TBD -
Turning Diameter - Curb to Curb (ft) 46.9

Summary

Body Code E63
Body Style Regular Cab Pickup
Body Code ZW9
Body Style Regular Cab Chassis Cab
Vehicle Name GMC Sierra 2500HD

Suspension

Stabilizer Bar Diameter - Rear (in)
Suspension Type - Front (Cont.) w/Torsion Bar
Suspension Type - Rear (Cont.) 3-Stage Leaf
Suspension Type - Front Short/Long Arm
Suspension Type - Rear Multi-Leaf Springs
Spring Capacity - Front (lbs) - TBD -
Spring Capacity - Rear (lbs) - TBD -
Axle Type - Front - TBD -
Axle Type - Rear - TBD -
Axle Capacity - Front (lbs) - TBD -
Axle Capacity - Rear (lbs) - TBD -
Axle Ratio (:1) - Front
Axle Ratio (:1) - Rear 3.42
Axle Ratio (:1) - Rear 3.73
Shock Absorber Diameter - Front (mm) 51
Shock Absorber Diameter - Rear (mm) 51
Stabilizer Bar Diameter - Front (in) 1.38

Tires

Spare Tire Size LT245/75R17E
Front Tire Size LT265/70R17E
Front Tire Size LT245/75R17E
Rear Tire Size LT275/65R20
Rear Tire Size LT275/70R18
Rear Tire Size LT275/70R18E
Rear Tire Size LT265/70R17E
Rear Tire Size LT245/75R17E
Spare Tire Size
Spare Tire Size LT275/70R18
Spare Tire Size LT265/70R17E
Front Tire Capacity (lbs) - TBD -
Rear Tire Capacity (lbs) - TBD -
Spare Tire Capacity (lbs) - TBD -
Revolutions/Mile @ 45 mph - Front N/A
Revolutions/Mile @ 45 mph - Rear N/A
Revolutions/Mile @ 45 mph - Spare N/A
Front Tire Order Code QF9
Front Tire Order Code QG3
Front Tire Order Code QF6
Front Tire Order Code QXT
Front Tire Order Code QHQ
Rear Tire Order Code QF9
Rear Tire Order Code QG3
Rear Tire Order Code QF6
Rear Tire Order Code QXT
Rear Tire Order Code QHQ
Spare Tire Order Code
Spare Tire Order Code ZYG
Spare Tire Order Code ZXT
Spare Tire Order Code ZHQ
Front Tire Size LT275/65R20
Front Tire Size LT275/70R18
Front Tire Size LT275/70R18E

Trailering

Wt Distributing Hitch - Max Tongue Wt. (lbs) 1450
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 18510
Fifth Wheel Hitch - Max Trailer Wt. (lbs) - TBD -
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 17370
Fifth Wheel Hitch - Max Tongue Wt. (lbs) 4627
Fifth Wheel Hitch - Max Tongue Wt. (lbs) - TBD -
Fifth Wheel Hitch - Max Tongue Wt. (lbs) 4342
Maximum Trailering Capacity (lbs)
Dead Weight Hitch - Max Tongue Wt. (lbs)
Dead Weight Hitch - Max Tongue Wt. (lbs) 500
Wt Distributing Hitch - Max Trailer Wt. (lbs)
Wt Distributing Hitch - Max Trailer Wt. (lbs) 14500
Wt Distributing Hitch - Max Tongue Wt. (lbs)
Maximum Trailering Capacity (lbs) 14500
Dead Weight Hitch - Max Trailer Wt. (lbs)
Dead Weight Hitch - Max Trailer Wt. (lbs) 5000

Transmission

Transfer Case Power Take Off - TBD -
Seventh Gear Ratio (:1) 1.00
Seventh Gear Ratio (:1)
Eighth Gear Ratio (:1) 0.85
Eighth Gear Ratio (:1)
Ninth Gear Ratio (:1) 0.69
Ninth Gear Ratio (:1)
Tenth Gear Ratio (:1) 0.63
Tenth Gear Ratio (:1)
Clutch Size (in) N/A
Reverse Ratio (:1) 3.06
Reverse Ratio (:1) 4.54
Sixth Gear Ratio (:1) 0.67
Sixth Gear Ratio (:1) 1.26
Fifth Gear Ratio (:1) 0.85
Fifth Gear Ratio (:1) 1.48
Fourth Gear Ratio (:1) 1.15
Fourth Gear Ratio (:1) 1.72
Third Gear Ratio (:1) 1.53
Third Gear Ratio (:1) 2.06
Second Gear Ratio (:1) 2.36
Second Gear Ratio (:1) 2.87
First Gear Ratio (:1) 4.03
First Gear Ratio (:1) 4.54
Trans Description Cont. Again
Trans Description Cont. Automatic
Trans Type 6
Trans Type 10
Trans Order Code MYD
Trans Order Code MGU
Trans Order Code MGM
Transfer Case Power Take Off
Drivetrain Rear Wheel Drive
Transfer Case Gear Ratio (:1), Low
Transfer Case Gear Ratio (:1), High
Transfer Case Model
Trans PTO Access
Trans PTO Access - TBD -
Trans Power Take Off
Trans Power Take Off Yes

Weight Information

Curb Weight - Rear (lbs) 2550
Curb Weight - Front (lbs) 3374
Gross Axle Wt Rating - Rear (lbs) 6390
Gross Axle Wt Rating - Rear (lbs) 6600
Gross Axle Wt Rating - Front (lbs) 4400
Gross Combined Wt Rating (lbs) 24000
Gross Combined Wt Rating (lbs) 26000
Gross Vehicle Weight Rating Cap (lbs) 9900
Gross Vehicle Weight Rating Cap (lbs) 10000
Gross Vehicle Weight Rating Cap (lbs) 10150
Gross Vehicle Weight Rating Cap (lbs) 10550
Gross Vehicle Weight Rating Cap (lbs) 10750
Gross Axle Wt Rating - Front (lbs) 4800
Gross Axle Wt Rating - Front (lbs) 5200

Wheels

Rear Wheel Size (in) 17 x - TBD -
Spare Wheel Size (in)
Rear Wheel Size (in) 18 x - TBD -
Rear Wheel Size (in) 20 x - TBD -
Front Wheel Size (in) 17 x - TBD -
Front Wheel Size (in) 18 x - TBD -
Front Wheel Size (in) 20 x - TBD -
Spare Wheel Material Steel
Spare Wheel Material
Rear Wheel Material Steel
Rear Wheel Material Aluminum
Front Wheel Material Steel
Front Wheel Material Aluminum
Spare Wheel Size (in) 17 x - TBD -
Spare Wheel Size (in) 18 x - TBD -