Specs

Research 2018 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) 13.8 x 1.57
Rear Brake Rotor Diam x Thickness (in) 14.17 x 1.34
Drum - Rear (Yes or )

Cargo Area Dimensions

Tailgate Width (in) - TBD -
Cargo Box (Area) Height (in) 21.22
Cargo Box (Area) Height (in)
Cargo Box Width @ Wheelhousings (in) 51.03
Cargo Box Width @ Wheelhousings (in)
Cargo Box Width @ Floor (in) - TBD -
Cargo Box Width @ Floor (in)
Cargo Box Width @ Top, Rear (in)
Cargo Box Length @ Floor (in) 97.76
Cargo Volume (ft³)
Tailgate Width (in)
Cargo Box Length @ Floor (in)
Ext'd Cab Cargo Volume (ft³)
Cargo Box Width @ Top, Rear (in) - TBD -
Cargo Volume (ft³) 76.3

Cooling System

Total Cooling System Capacity (qts) - TBD -
Total Cooling System Capacity (qts) - TBD -

Electrical

Maximum Alternator Watts
Cold Cranking Amps @ 0° F (Primary) 730
Cold Cranking Amps @ 0° F (Primary) 720
Cold Cranking Amps @ 0° F (2nd) 730
Cold Cranking Amps @ 0° F (2nd)
Maximum Alternator Capacity (amps) 1 @ 150, 1 @ 220
Maximum Alternator Capacity (amps) 220
Maximum Alternator Capacity (amps) 150

Emissions

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

Engine

SAE Net Torque @ RPM 380 @ 4200
Engine Oil Cooler Yes
Engine Order Code L5P
Engine Order Code LC8
Engine Order Code L96
Engine Type Turbocharged Diesel V8
Engine Type Gas/Ethanol V8
Displacement 6.6L/403
Displacement 6.0L/366
Fuel System Direct Injection
Fuel System Electronic Fuel Injection
SAE Net Horsepower @ RPM 445 @ 2800
SAE Net Torque @ RPM 910 @ 1600
SAE Net Horsepower @ RPM 360 @ 5400

Exterior Dimensions

Overhang, Front (in) - TBD -
Width, Max w/o mirrors (in) 80.12
Length, Overall w/o rear bumper (in) 224.43
Wheelbase (in) 133.60
Ground to Top of Frame (in) - TBD -
Frame Width, Rear (in) - TBD -
Ground Clearance, Front (in) 8.78
Ground Clearance, Rear (in) 8.78
Ground to Top of Load Floor (in) - TBD -
Ground to Top of Load Floor (in)
Cab to End of Frame (in) - TBD -
Cab to Axle (in) 55.16
Front Bumper to Back of Cab (in) 117.10
Overhang, Rear w/o bumper (in) - TBD -
Height, Overall (in) 77.80

Frame

Frame Type Hydroformed

Fuel Tank

Fuel Tank Capacity, Approx (gal) 36.0
Aux Fuel Tank Capacity, Approx (gal)
Fuel Tank Location - TBD -
Aux Fuel Tank Location

Interior Dimensions

Front Leg Room (in) 45.27
Front Head Room (in) 42.80
Passenger Capacity 3
Front Hip Room (in) 61.22
Front Shoulder Room (in) 66.03

Mileage

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

Steering

Steering Type Pwr
Steering Ratio (:1), On Center - TBD -
Steering Ratio (:1), At Lock - TBD -
Turning Diameter - Curb to Curb (ft) 45.9
Turning Diameter - Wall to Wall (ft) N/A

Summary

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

Suspension

Stabilizer Bar Diameter - Front (in) 1.31
Suspension Type - Front Torsion Bar
Suspension Type - Rear Multi-Leaf
Spring Capacity - Front (lbs) 4800
Spring Capacity - Front (lbs) 4800
Spring Capacity - Front (lbs) 4400
Spring Capacity - Rear (lbs) 6200
Axle Type - Front Independent
Axle Type - Rear Semi Floating
Axle Capacity - Front (lbs) 4800
Axle Capacity - Front (lbs) 4400
Axle Capacity - Rear (lbs) 6200
Axle Ratio (:1) - Front
Axle Ratio (:1) - Rear 3.73
Axle Ratio (:1) - Rear 4.10
Shock Absorber Diameter - Front (mm) 51.0
Shock Absorber Diameter - Rear (mm) 51.0
Stabilizer Bar Diameter - Front (in) - TBD -
Stabilizer Bar Diameter - Rear (in)

Tires

Revolutions/Mile @ 45 mph - Rear - TBD -
Revolutions/Mile @ 45 mph - Spare - TBD -
Revolutions/Mile @ 45 mph - Spare
Revolutions/Mile @ 45 mph - Spare
Front Tire Order Code QF2
Front Tire Order Code QFC
Front Tire Order Code QGM
Front Tire Order Code QWF
Front Tire Order Code QXT
Front Tire Order Code QHQ
Rear Tire Order Code QF2
Rear Tire Order Code QFC
Rear Tire Order Code QGM
Rear Tire Order Code QWF
Rear Tire Order Code QXT
Rear Tire Order Code QHQ
Spare Tire Order Code ZHQ
Spare Tire Order Code ZXT
Spare Tire Order Code ZWF
Spare Tire Order Code
Front Tire Size LT275/65R18E
Front Tire Size LT265/70R18E
Front Tire Size LT265/60R20E
Front Tire Size LT265/70R17E
Front Tire Size LT245/75R17E
Rear Tire Size LT275/65R18E
Rear Tire Size LT265/70R18E
Rear Tire Size LT265/60R20E
Rear Tire Size LT265/70R17E
Rear Tire Size LT245/75R17E
Spare Tire Size LT245/75R17E
Spare Tire Size LT265/70R17E
Spare Tire Size LT265/70R18E
Spare Tire Size - TBD -
Spare Tire Size
Front Tire Capacity (lbs) - TBD -
Rear Tire Capacity (lbs) - TBD -
Spare Tire Capacity (lbs) - TBD -
Revolutions/Mile @ 45 mph - Front - TBD -

Trailering

Fifth Wheel Hitch - Max Tongue Wt. (lbs) 4525
Maximum Trailering Capacity (lbs) 14500
Fifth Wheel Hitch - Max Tongue Wt. (lbs) 3700
Fifth Wheel Hitch - Max Tongue Wt. (lbs) 2575
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 14800
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 10100
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 10300
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 18100
Wt Distributing Hitch - Max Tongue Wt. (lbs) 1450
Wt Distributing Hitch - Max Tongue Wt. (lbs) 1040
Wt Distributing Hitch - Max Tongue Wt. (lbs) - TBD -
Wt Distributing Hitch - Max Trailer Wt. (lbs) 14500
Wt Distributing Hitch - Max Trailer Wt. (lbs) 10400
Wt Distributing Hitch - Max Trailer Wt. (lbs) 10200
Dead Weight Hitch - Max Tongue Wt. (lbs) 500
Dead Weight Hitch - Max Trailer Wt. (lbs) 5000

Transmission

Clutch Size (in)
Reverse Ratio (:1) 3.06
Reverse Ratio (:1) 4.49
Sixth Gear Ratio (:1) 0.67
Sixth Gear Ratio (:1) 0.61
Fifth Gear Ratio (:1) 0.85
Drivetrain Rear Wheel Drive
Fifth Gear Ratio (:1) 0.71
Fourth Gear Ratio (:1) 1.15
Transfer Case Power Take Off
Transfer Case Gear Ratio (:1), Low
Transfer Case Gear Ratio (:1), High
Fourth Gear Ratio (:1) 1.00
Third Gear Ratio (:1) 1.53
Third Gear Ratio (:1) 1.41
Second Gear Ratio (:1) 2.36
Second Gear Ratio (:1) 1.81
First Gear Ratio (:1) 4.03
First Gear Ratio (:1) 3.10
Trans Description Cont. Again
Trans Description Cont. Automatic
Trans Type 6
Trans Order Code MYD
Trans Order Code MW7
Transfer Case Model
Trans PTO Access
Trans Power Take Off

Weight Information

Gross Vehicle Weight Rating Cap (lbs) 10000
Curb Weight - Front (lbs) 3230
Gross Axle Wt Rating - Rear (lbs) 6200
Gross Axle Wt Rating - Rear (lbs) 6700
Gross Axle Wt Rating - Front (lbs) 4800
Gross Axle Wt Rating - Front (lbs) 4400
Gross Combined Wt Rating (lbs) 21100
Gross Combined Wt Rating (lbs) 16600
Gross Combined Wt Rating (lbs) 25300
Gross Vehicle Weight Rating Cap (lbs) 9300
Gross Vehicle Weight Rating Cap (lbs) 9900
Curb Weight - Rear (lbs) 2511
Gross Axle Wt Rating - Front (lbs) 4800

Wheels

Spare Wheel Material Steel
Rear Wheel Material Aluminum
Front Wheel Size (in) 20 x 8.5
Front Wheel Size (in) 18 x 8.0
Front Wheel Size (in) 17 x 7.5
Rear Wheel Size (in) 20 x 8.5
Rear Wheel Size (in) 18 x 8.0
Rear Wheel Size (in) 17 x 7.5
Spare Wheel Size (in)
Spare Wheel Size (in) 18 x 8.0
Spare Wheel Size (in) 17 x 7.5
Front Wheel Material Aluminum
Front Wheel Material Steel
Rear Wheel Material Steel

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