Research 2003 Chevrolet Silverado 2500 specs for the trims available. Choose the desired trim / style from the dropdown list to see the corresponding specs.

Work Truck 2WD Regular Cab Long Box C6P Work Truck


Disc - Rear (Yes or ) Yes
Front Brake Rotor Diam x Thickness (in) 12.8 x 1.5
Rear Brake Rotor Diam x Thickness (in) 13.0 x 1.4
Drum - Rear (Yes or )
Rear Drum Diam x Width (in)
Brake Type Pwr
Brake ABS System Four-Wheel
Brake ABS System (Second Line)
Disc - Front (Yes or ) Yes

Cargo Area Dimensions

Cargo Volume (ft³) 70.7
Cargo Box (Area) Height (in) 19.5
Cargo Box Width @ Wheelhousings (in) 50.0
Cargo Box Width @ Top, Rear (in) 61.9
Cargo Box Length @ Floor (in) 97.6
Cargo Box Length @ Floor (in) 72.0
Cargo Box Width @ Floor (in) 64.8
Ext'd Cab Cargo Volume (ft³)
Tailgate Width (in) 61.9

Cooling System

Total Cooling System Capacity (qts) 15.4


Maximum Alternator Watts
Cold Cranking Amps @ 0° F (2nd)
Cold Cranking Amps @ 0° F (2nd) 600
Cold Cranking Amps @ 0° F (Primary) 600
Maximum Alternator Capacity (amps) 105
Maximum Alternator Capacity (amps) 145


SAE Net Horsepower @ RPM 295 @ 5200
SAE Net Torque @ RPM 360 @ 4000
Engine Oil Cooler Yes
Engine Order Code LQ4
Engine Type Gas/Natural Gas V8
Engine Type Gas V8
Displacement 6.0L/364
Fuel System SFI
SAE Net Horsepower @ RPM 300 @ 4400

Exterior Dimensions

Ground to Top of Frame (in)
Ground Clearance, Rear (in) 6.9
Ground Clearance, Front (in) 7.5
Frame Width, Rear (in)
Ground to Top of Load Floor (in)
Cab to End of Frame (in)
Cab to Axle (in) 55.9
Front Bumper to Back of Cab (in) 114.0
Overhang, Rear w/o bumper (in) 52.2
Overhang, Front (in) 36.9
Height, Overall (in) 74.2
Width, Max w/o mirrors (in) 78.5
Length, Overall w/o rear bumper (in) 222.1
Wheelbase (in) 133.0


Frame Type Ladder

Fuel Tank

Aux Fuel Tank Capacity, Approx (gal)
Fuel Tank Location LH
Aux Fuel Tank Location
Fuel Tank Capacity, Approx (gal) 20
Fuel Tank Capacity, Approx (gal) 34

Interior Dimensions

Passenger Capacity 3
Front Head Room (in) 41.0
Front Leg Room (in) 41.3
Front Shoulder Room (in) 65.2
Front Hip Room (in) 61.4


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


Steering Ratio (:1), On Center
Steering Ratio (:1), At Lock
Turning Diameter - Curb to Curb (ft) 45.3
Turning Diameter - Wall to Wall (ft)
Steering Type Pwr


Body Code E63
Vehicle Name Chevrolet Silverado 2500
Body Code ZW9
Body Style Reg Cab 8' Fleetside
Body Style Reg Cab


Suspension Type - Rear 2-Stage Multi-Leaf
Spring Capacity - Front (lbs) 4100
Spring Capacity - Rear (lbs) 6000
Axle Type - Front 8-Bolt
Axle Type - Rear Semi-Floating
Axle Capacity - Front (lbs) 4100
Axle Capacity - Rear (lbs) 6000
Stabilizer Bar Diameter - Rear (in)
Stabilizer Bar Diameter - Front (in) 1.42
Shock Absorber Diameter - Front (mm) 36
Shock Absorber Diameter - Rear (mm) 36
Axle Ratio (:1) - Front
Axle Ratio (:1) - Rear 4.10
Axle Ratio (:1) - Rear 3.73
Suspension Type - Front Coil Spring


Spare Tire Capacity (lbs) 2335
Front Tire Order Code QIW
Front Tire Order Code QIZ
Rear Tire Order Code QIW
Rear Tire Order Code QIZ
Spare Tire Order Code QIW
Spare Tire Order Code ZHH
Spare Tire Order Code ZGK
Spare Tire Order Code
Spare Tire Order Code QIZ
Front Tire Size LT245/75R16
Rear Tire Size LT245/75R16
Spare Tire Size
Spare Tire Size LT245/75R16
Front Tire Capacity (lbs) 2335
Front Tire Capacity (lbs) 2205
Rear Tire Capacity (lbs) 3042
Spare Tire Capacity (lbs)
Spare Tire Capacity (lbs) 2205
Revolutions/Mile @ 45 mph - Front
Revolutions/Mile @ 45 mph - Rear
Revolutions/Mile @ 45 mph - Spare


Dead Weight Hitch - Max Trailer Wt. (lbs) 4500
Dead Weight Hitch - Max Trailer Wt. (lbs) 5000
Dead Weight Hitch - Max Tongue Wt. (lbs) 500
Wt Distributing Hitch - Max Trailer Wt. (lbs) 5,000
Wt Distributing Hitch - Max Trailer Wt. (lbs) 4,500
Wt Distributing Hitch - Max Trailer Wt. (lbs) 10,700
Wt Distributing Hitch - Max Tongue Wt. (lbs) 600
Wt Distributing Hitch - Max Tongue Wt. (lbs) 1500
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 10,700
Fifth Wheel Hitch - Max Tongue Wt. (lbs) 2500


Reverse Ratio (:1) 5.61
Reverse Ratio (:1) 2.08
Sixth Gear Ratio (:1)
Fifth Gear Ratio (:1) 0.75
Fifth Gear Ratio (:1)
Fourth Gear Ratio (:1) 1.00
Fourth Gear Ratio (:1) 0.75
Third Gear Ratio (:1) 1.67
Third Gear Ratio (:1) 1.00
Second Gear Ratio (:1) 3.04
Second Gear Ratio (:1) 1.48
First Gear Ratio (:1) 5.61
First Gear Ratio (:1) 2.48
Trans Description Cont. Again
Trans Description Cont. Manual w/OD
Trans Description Cont. HD Automatic w/OD
Trans Type 5
Trans Type 4
Trans Order Code MW3
Trans Order Code MT1
Transfer Case Power Take Off
Transfer Case Gear Ratio (:1), Low
Drivetrain Rear Wheel Drive
Seventh Gear Ratio (:1)
Transfer Case Gear Ratio (:1), High
Transfer Case Model
Trans PTO Access RH
Trans PTO Access
Trans Power Take Off SAE 6-Bolt
Trans Power Take Off
Clutch Size (in)

Weight Information

Gross Axle Wt Rating - Rear (lbs) 6000
Gross Combined Wt Rating (lbs) 14,000
Gross Combined Wt Rating (lbs) 13,000
Gross Combined Wt Rating (lbs) 16,000
Gross Vehicle Weight Rating Cap (lbs) 8600
Gross Vehicle Weight Rating Cap (lbs) 8500
Curb Weight - Rear (lbs) 2071
Curb Weight - Front (lbs) 2809
Gross Axle Wt Rating - Front (lbs) 4100


Rear Wheel Size (in) 16 x 6.5
Front Wheel Size (in) 16 x 6.5
Spare Wheel Material Steel
Spare Wheel Material
Rear Wheel Material Steel
Rear Wheel Material Chrome
Front Wheel Material Steel
Front Wheel Material Chrome
Spare Wheel Size (in) 16 x 6.5
Spare Wheel Size (in)