Chevrolet Silverado 1500HD ›› 2003 ›› 2003 Chevrolet Silverado 1500HD Specs

2003 Chevrolet Silverado 1500HD

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Research 2003 Chevrolet Silverado 1500HD specs for the trims available. Choose the desired trim / style from the dropdown list to see the corresponding specs.

LS 2WD Crew Cab Standard Box LS


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 )
Brake ABS System Four-Wheel
Brake Type Pwr
Brake ABS System (Second Line)
Rear Drum Diam x Width (in)
Disc - Front (Yes or ) Yes

Cargo Area Dimensions

Cargo Box Width @ Floor (in) 64.8
Cargo Box (Area) Height (in) 19.5
Tailgate Width (in) 61.9
Cargo Volume (ft³) 56.9
Ext'd Cab Cargo Volume (ft³)
Cargo Box Length @ Floor (in) 78.7
Cargo Box Width @ Top, Rear (in) 61.9
Cargo Box Width @ Wheelhousings (in) 50.0

Cooling System

Total Cooling System Capacity (qts) 15.4


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


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

Exterior Dimensions

Cab to End of Frame (in)
Ground Clearance, Rear (in) 7.4
Ground Clearance, Front (in) 7.9
Frame Width, Rear (in)
Ground to Top of Frame (in)
Ground to Top of Load Floor (in) 84.7
Cab to Axle (in) 41.9
Front Bumper to Back of Cab (in) 148.1
Overhang, Rear w/o bumper (in) 47.2
Overhang, Front (in) 37.0
Height, Overall (in) 77.0
Width, Max w/o mirrors (in) 79.7-
Length, Overall w/o rear bumper (in) 237.2
Wheelbase (in) 153.0


Frame Type Ladder

Fuel Tank

Fuel Tank Location LH
Aux Fuel Tank Location
Aux Fuel Tank Capacity, Approx (gal)
Fuel Tank Capacity, Approx (gal) 26

Interior Dimensions

Second Leg Room (in) 38.8
Front Shoulder Room (in) 65.2
Front Head Room (in) 41.1
Front Leg Room (in) 41.3
Front Hip Room (in) 61.4
Second Head Room (in) 39.9
Second Shoulder Room (in) 65.1
Passenger Capacity 5
Passenger Capacity 6
Second Hip Room (in) 62.9


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


Turning Diameter - Curb to Curb (ft) 49.6
Turning Diameter - Curb to Curb (ft) 39.8
Steering Ratio (:1), At Lock
Steering Ratio (:1), On Center
Turning Diameter - Wall to Wall (ft)
Steering Type Pwr


Body Code E63
Body Style Crew Cab 6.5' Fleetside
Vehicle Name Chevrolet Silverado 1500HD


Suspension Type - Rear 2-Stage Multi-Leaf
Spring Capacity - Front (lbs) 4500
Spring Capacity - Rear (lbs) 6000
Axle Type - Rear Semi-Floating
Axle Type - Front Independent
Axle Capacity - Front (lbs) 4500
Axle Capacity - Rear (lbs) 6000
Axle Ratio (:1) - Front
Axle Ratio (:1) - Rear 4.10
Axle Ratio (:1) - Rear 3.73
Shock Absorber Diameter - Front (mm) 35
Shock Absorber Diameter - Rear (mm) 35
Stabilizer Bar Diameter - Front (in) 1.25
Stabilizer Bar Diameter - Rear (in)
Suspension Type - Front Torsion Bar


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


Wt Distributing Hitch - Max Tongue Wt. (lbs) 1500
Fifth Wheel Hitch - Max Trailer Wt. (lbs) 11,000
Fifth Wheel Hitch - Max Tongue Wt. (lbs) 2500
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) 10,200


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

Weight Information

Gross Vehicle Weight Rating Cap (lbs) 8600
Curb Weight - Rear (lbs) 2258
Curb Weight - Front (lbs) 3097
Gross Axle Wt Rating - Rear (lbs) 6000
Gross Axle Wt Rating - Front (lbs) 4410
Gross Combined Wt Rating (lbs) 14,000
Gross Combined Wt Rating (lbs) 16,000


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