Specs

Research 2021 GMC Sierra 1500 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

Disc - Front (Yes or ) Yes
Front Brake Rotor Diam x Thickness (in) 13.5 x 1.18
Rear Brake Rotor Diam x Thickness (in) 13.6 x 0.79
Drum - Rear (Yes or )
Rear Drum Diam x Width (in)
Disc - Rear (Yes or ) Yes
Brake ABS System 4-Wheel
Brake Type Pwr
Brake ABS System (Second Line)

Cargo Area Dimensions

Ext'd Cab Cargo Volume (ft³)
Cargo Volume (ft³) 89.1
Tailgate Width (in) - TBD -
Cargo Box (Area) Height (in) 22.4
Cargo Box Width @ Wheelhousings (in) 50.62
Cargo Box Width @ Floor (in) 71.4
Cargo Box Width @ Top, Rear (in) - TBD -
Cargo Box Length @ Floor (in) 98.2

Cooling System

Total Cooling System Capacity (qts) - TBD -

Electrical

Maximum Alternator Watts - TBD -
Cold Cranking Amps @ 0° F (Primary) 730
Maximum Alternator Capacity (amps) 170
Cold Cranking Amps @ 0° F (Primary) 720
Cold Cranking Amps @ 0° F (2nd)
Maximum Alternator Capacity (amps) 220

Emissions

Tons/yr of CO2 Emissions @ 15K mi/year 10.4
Tons/yr of CO2 Emissions @ 15K mi/year 8.5
Tons/yr of CO2 Emissions @ 15K mi/year 11.1
EPA Greenhouse Gas Score

Engine

Displacement 2.7L/166
Displacement 4.3L/262
Fuel System Direct Injection
SAE Net Horsepower @ RPM 355 @ 5600
SAE Net Horsepower @ RPM 310 @ 5600
SAE Net Horsepower @ RPM 285 @ 5300
SAE Net Torque @ RPM 383 @ 4100
SAE Net Torque @ RPM 348 @ 1500
SAE Net Torque @ RPM 305 @ 3900
Engine Oil Cooler Yes
Engine Order Code L82
Engine Order Code L3B
Engine Order Code LV3
Engine Type Gas/Ethanol V8
Engine Type Gas V8
Engine Type Gas I4
Engine Type Gas V6
Displacement 5.3L/325

Exterior Dimensions

Ground to Top of Frame (in) - TBD -
Ground Clearance, Rear (in) 8.1
Ground Clearance, Front (in) 8.1
Frame Width, Rear (in) - TBD -
Ground to Top of Load Floor (in) - TBD -
Cab to End of Frame (in) - TBD -
Cab to Axle (in) - TBD -
Front Bumper to Back of Cab (in) - TBD -
Overhang, Rear w/o bumper (in) - TBD -
Overhang, Front (in) - TBD -
Height, Overall (in) 75.6
Width, Max w/o mirrors (in) 81.15
Length, Overall (in) 229.6
Wheelbase (in) 139.56

Frame

Frame Type Hydroformed

Fuel Tank

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

Interior Dimensions

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

Mileage

Fuel Economy Est-Combined (MPG) 16
EPA Fuel Economy Est - Hwy (MPG) 21
EPA Fuel Economy Est - Hwy (MPG) 19
EPA Fuel Economy Est - Hwy (MPG) 23
EPA Fuel Economy Est - City (MPG) 16
EPA Fuel Economy Est - City (MPG) 15
EPA Fuel Economy Est - City (MPG) 20
Fuel Economy Est-Combined (MPG) 17
Fuel Economy Est-Combined (MPG) 21

Steering

Turning Diameter - Wall to Wall (ft) - TBD -
Steering Ratio (:1), At Lock - TBD -
Steering Ratio (:1), On Center - TBD -
Steering Type Electric Rack & Pinion
Turning Diameter - Curb to Curb (ft) 44.7

Summary

Body Code ZW9
Body Style Regular Cab Pickup
Body Code E63
Vehicle Name GMC Sierra 1500

Suspension

Axle Ratio (:1) - Front
Suspension Type - Front Independent
Suspension Type - Rear Solid Axle
Spring Capacity - Front (lbs) 3700
Spring Capacity - Rear (lbs) 4150
Stabilizer Bar Diameter - Rear (in)
Shock Absorber Diameter - Rear (mm) 51
Stabilizer Bar Diameter - Front (in) 1.30
Shock Absorber Diameter - Front (mm) 50
Axle Ratio (:1) - Rear 3.42
Spring Capacity - Rear (lbs) 3850
Axle Type - Front - TBD -
Axle Type - Rear - TBD -
Axle Capacity - Front (lbs) 3700
Axle Capacity - Rear (lbs) 4150
Axle Capacity - Rear (lbs) 3800

Tires

Rear Tire Size 265/70R17
Front Tire Order Code R3O
Front Tire Order Code RC5
Front Tire Order Code QDV
Front Tire Order Code QBN
Rear Tire Order Code R3O
Rear Tire Order Code RC5
Rear Tire Order Code QDV
Rear Tire Order Code QBN
Spare Tire Order Code 9L3
Spare Tire Order Code 6M9
Spare Tire Order Code QAQ
Spare Tire Order Code XCQ
Spare Tire Order Code RHM
Spare Tire Order Code QBR
Front Tire Size LT275/65R18C
Front Tire Size LT265/70R17C
Front Tire Size 265/70R17
Front Tire Size 255/70R17
Rear Tire Size LT275/65R18C
Rear Tire Size LT265/70R17C
Rear Tire Size 255/70R17
Spare Tire Size
Spare Tire Size 265/70R17
Spare Tire Size LT265/70R17
Spare Tire Size 255/80R17SL
Spare Tire Size 265/70R17SL
Spare Tire Size 255/70R17
Front Tire Capacity (lbs) - TBD -
Rear Tire Capacity (lbs) - TBD -
Spare Tire Capacity (lbs)
Spare Tire Capacity (lbs) - TBD -
Revolutions/Mile @ 45 mph - Front - TBD -
Revolutions/Mile @ 45 mph - Rear - TBD -
Revolutions/Mile @ 45 mph - Spare
Revolutions/Mile @ 45 mph - Spare - TBD -

Trailering

Wt Distributing Hitch - Max Tongue Wt. (lbs) 780
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 9800
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 7800
Fifth Wheel Hitch - Max Tongue Wt. (lbs) 2450
Fifth Wheel Hitch - Max Tongue Wt. (lbs) 1950
Maximum Trailering Capacity (lbs) 9900
Dead Weight Hitch - Max Trailer Wt. (lbs) 5000
Dead Weight Hitch - Max Tongue Wt. (lbs) 500
Wt Distributing Hitch - Max Trailer Wt. (lbs) 9900
Wt Distributing Hitch - Max Trailer Wt. (lbs) 7800
Wt Distributing Hitch - Max Tongue Wt. (lbs) 990

Transmission

Drivetrain Rear Wheel Drive
Seventh Gear Ratio (:1)
Eighth Gear Ratio (:1) 0.65
Eighth Gear Ratio (:1)
Ninth Gear Ratio (:1)
Tenth Gear Ratio (:1)
Fifth Gear Ratio (:1) 0.85
Fifth Gear Ratio (:1) 1.27
Fourth Gear Ratio (:1) 1.15
Fourth Gear Ratio (:1) 1.69
Third Gear Ratio (:1) 1.53
Third Gear Ratio (:1) 2.08
Second Gear Ratio (:1) 2.36
Second Gear Ratio (:1) 2.97
First Gear Ratio (:1) 4.03
First Gear Ratio (:1) 4.56
Transfer Case Power Take Off
Transfer Case Gear Ratio (:1), Low
Transfer Case Gear Ratio (:1), High
Transfer Case Model
Trans PTO Access
Trans Description Cont. Again
Trans Description Cont. Automatic
Trans Type 6
Trans Type 8
Trans Order Code MYC
Trans Order Code MQE
Trans Power Take Off
Seventh Gear Ratio (:1) 0.85
Clutch Size (in)
Reverse Ratio (:1) 3.06
Reverse Ratio (:1) 3.82
Sixth Gear Ratio (:1) 0.66
Sixth Gear Ratio (:1) 1.00

Weight Information

Gross Axle Wt Rating - Rear (lbs) 3800
Gross Vehicle Weight Rating Cap (lbs) 7100
Curb Weight - Rear (lbs) 1707
Curb Weight - Front (lbs) 2662
Gross Combined Wt Rating (lbs) 12800
Gross Combined Wt Rating (lbs) 14500
Gross Combined Wt Rating (lbs) 15000
Gross Axle Wt Rating - Front (lbs) 3700
Gross Vehicle Weight Rating Cap (lbs) 6800
Gross Vehicle Weight Rating Cap (lbs) 7000
Gross Vehicle Weight Rating Cap (lbs) 6900

Wheels

Front Wheel Size (in) 18 x 8.5
Spare Wheel Size (in)
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 Material Steel
Rear Wheel Size (in) 17 x 8.0
Rear Wheel Size (in) 18 x 8.5
Front Wheel Size (in) 17 x 8.0