Chevrolet Avalanche ›› 2003 ›› 2003 Chevrolet Avalanche Specs

2003 Chevrolet Avalanche

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

1500 2WD Crew Cab


Disc - Front (Yes or ) Yes
Disc - Rear (Yes or ) Yes
Front Brake Rotor Diam x Thickness (in) 12.0 x 1.1
Rear Brake Rotor Diam x Thickness (in) 12.9 x 1.2
Brake Type Pwr
Rear Drum Diam x Width (in)
Drum - Rear (Yes or )
Brake ABS System 4-Wheel
Brake ABS System (Second Line)

Cargo Area Dimensions

Cargo Volume (ft³) 41.0 Min
Cargo Box Width @ Top, Rear (in) 50.0
Ext'd Cab Cargo Volume (ft³)
Cargo Box Length @ Floor (in) 63.0 Min, 97.6 Max
Cargo Box Width @ Floor (in) 50.0
Cargo Box Width @ Wheelhousings (in) 50.0
Cargo Box (Area) Height (in) 22.5
Tailgate Width (in)

Cooling System

Total Cooling System Capacity (qts) 13.6


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


Engine Order Code LM7
Displacement 5.3L/327
Fuel System SFI
Engine Oil Cooler
SAE Net Horsepower @ RPM 285 @ 5200
SAE Net Torque @ RPM 325 @ 4000
Engine Type Gas V8

Exterior Dimensions

Ground Clearance, Rear (in) 8.6
Ground Clearance, Front (in) 8.6
Ground Clearance, Front (in) 8.8
Frame Width, Rear (in)
Ground to Top of Frame (in)
Ground to Top of Load Floor (in) 31.0
Cab to End of Frame (in)
Cab to Axle (in)
Front Bumper to Back of Cab (in)
Overhang, Rear w/o bumper (in) 52.9
Overhang, Front (in) 38.8
Height, Overall (in) 74.5
Width, Max w/o mirrors (in) 79.8
Length, Overall w/o rear bumper (in) 220.8
Wheelbase (in) 130.0
Ground Clearance, Rear (in) 8.8


Frame Type Ladder

Fuel Tank

Fuel Tank Location
Fuel Tank Capacity, Approx (gal) 31
Aux Fuel Tank Capacity, Approx (gal)
Aux Fuel Tank Location

Interior Dimensions

Second Head Room (in) 38.6
Second Leg Room (in) 38.9
Second Shoulder Room (in) 65.2
Front Head Room (in) 40.7
Second Hip Room (in) 62.0
Passenger Capacity 5
Passenger Capacity 6
Front Leg Room (in) 41.3
Front Shoulder Room (in) 65.2
Front Hip Room (in) 61.4


EPA Fuel Economy Est - Hwy (MPG) 18
EPA Fuel Economy Est - City (MPG) 14


Steering Ratio (:1), On Center
Turning Diameter - Curb to Curb (ft) 43.3
Steering Ratio (:1), At Lock
Steering Type Pwr
Turning Diameter - Wall to Wall (ft)


Body Style 5 Door Crew Cab
Body Code
Vehicle Name Chevrolet Avalanche


Suspension Type - Rear Multi-Link
Spring Capacity - Front (lbs) 3400
Spring Capacity - Rear (lbs) 4000
Axle Type - Front Independent
Axle Capacity - Front (lbs) 3400
Axle Type - Rear Semi-Floating
Axle Capacity - Rear (lbs) 4000
Axle Ratio (:1) - Front
Axle Ratio (:1) - Rear 4.10
Axle Ratio (:1) - Rear 3.73
Shock Absorber Diameter - Front (mm) 32
Shock Absorber Diameter - Rear (mm) 32
Stabilizer Bar Diameter - Front (in) 1.42
Stabilizer Bar Diameter - Rear (in) 1.12
Suspension Type - Front Indep Torsion Bar


Rear Tire Order Code QJM
Front Tire Order Code QMK
Front Tire Order Code QJP
Front Tire Order Code QJM
Front Tire Order Code QAN
Front Tire Order Code QAS
Front Tire Order Code
Rear Tire Order Code QMK
Rear Tire Order Code QJP
Rear Tire Order Code QAN
Rear Tire Order Code QAS
Rear Tire Order Code
Spare Tire Order Code
Front Tire Size P265/70R17
Front Tire Size P265/70R16
Rear Tire Size P265/70R17
Rear Tire Size P265/70R16
Spare Tire Size P265/70R16
Front Tire Capacity (lbs) 2134
Front Tire Capacity (lbs) 2184
Rear Tire Capacity (lbs) 2134
Rear Tire Capacity (lbs) 2184
Spare Tire Capacity (lbs) 2134
Spare Tire Capacity (lbs) 2184
Revolutions/Mile @ 45 mph - Front
Revolutions/Mile @ 45 mph - Rear
Revolutions/Mile @ 45 mph - Spare


Wt Distributing Hitch - Max Tongue Wt. (lbs) 820
Wt Distributing Hitch - Max Tongue Wt. (lbs) 720
Fifth Wheel Hitch - Max Trailer Wt. (lbs) N/A
Dead Weight Hitch - Max Trailer Wt. (lbs) 5000
Dead Weight Hitch - Max Tongue Wt. (lbs) 600
Wt Distributing Hitch - Max Trailer Wt. (lbs) 8200
Wt Distributing Hitch - Max Trailer Wt. (lbs) 7200
Fifth Wheel Hitch - Max Tongue Wt. (lbs) N/A


Reverse Ratio (:1) 2.29
Sixth Gear Ratio (:1)
Fifth Gear Ratio (:1)
Fourth Gear Ratio (:1) 0.70
Third Gear Ratio (:1) 1.00
Second Gear Ratio (:1) 1.63
First Gear Ratio (:1) 3.06
Trans Description Cont. Again
Trans Description Cont. Automatic w/OD
Trans Type 4
Trans Order Code M30
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 New Venture Gear NVG246
Clutch Size (in)
Drivetrain Rear Wheel Drive

Weight Information

Gross Vehicle Weight Rating Cap (lbs) 6800
Curb Weight - Rear (lbs) 2551
Curb Weight - Front (lbs) 2743
Gross Axle Wt Rating - Rear (lbs) 4000
Gross Axle Wt Rating - Front (lbs) 3400
Gross Combined Wt Rating (lbs) 13000
Gross Combined Wt Rating (lbs) 14000


Front Wheel Size (in) 16 x 7
Front Wheel Size (in) 17 x 7
Rear Wheel Size (in) 17 x 7
Rear Wheel Size (in) 16 x 7
Spare Wheel Size (in) 16 x 7
Front Wheel Material Aluminum
Rear Wheel Material Aluminum
Spare Wheel Material Steel