2003 GMC Sierra 1500
2003 · Second generation · facelift
Catalog figures for this model year. Ratings vary by configuration.
Quick facts
Capability
Towing
7,900–10,000 lb
Payload
1,303–2,123 lb
Curb weight
4,142–5,097 lb
Horsepower
200–325 hp
Efficiency
MPG city
12–16 mpg
Fuel tank
26.0–34.0 gal
Fitment
Bolt pattern
6x139.7
Engines
LR4
Drivetrain
4x4 · 4x2
Body
Extended Cab · Regular Cab
Configurations
24
Complaints in dataset
178
What do you need to do with your 2003 Sierra 1500?
Tow somethingCatalog towing ratingsCarry cargoCurb, GVWR, payloadCheck garage fitLength, width, heightBuy wheelsOEM rim and bolt patternFind tire sizeOEM tire sizesReplace a bulbPosition → bulb codeReplace wipersDriver / passenger / rearIdentify the engineEngines offered this yearCheck powerHorsepower and torqueEstimate rangeMPG and tankCheck ground clearanceCheck interior roomFind a fuseRead the owner’s manualInvestigate a problemOwner-report counts, not failure rates
Capability
These figures are manufacturer ratings stored on 24 catalog configurations. Optional factory tow packages are often missing from this table. Confirm the door jamb and owner’s manual for the vehicle you have.
Size & fitment
Dimensions
203.2–246.6 in
Ground Clearance
8.3–8.6 in
Wheel Sizes
6x139.7
Tire Sizes
OEM sizes
Interior
41.3 in
MPG
12–16 mpg
Maintenance
Wiper Sizes
Driver / passenger / rear
Bulb Sizes
Position chart
Fuses
Stored diagrams
Owner’s Manual
Stored sections
Owner Complaints
178 complaint records in our dataset — not a failure rate.