Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 ChevroletFACTORY OEM SERVICE PROCEDURE
Chevrolet: 2003
- Astro Van 2WD V6-4.3L VIN X
- Astro Van AWD V6-4.3L VIN X
- Avalanche 1500 2WD V8-5.3L VIN T
- Avalanche 1500 4WD V8-5.3L VIN T
- Avalanche 2500 2WD V8-8.1L VIN G
- Avalanche 2500 4WD V8-8.1L VIN G
- C 1500 Suburban 2WD
- C 1500 Truck 2WD
- C 2500 Suburban 2WD
- C 2500 Truck 2WD
- C 3500 Truck 2WD
- C Tahoe 2WD
- Cavalier L4-2.2L VIN F
- Corvette
- Express 1 Ton Van V8-6.0L VIN U
- Express 1/2 Ton Van
- Express 1/2 Ton Van AWD V8-5.3L VIN T
- Express 3/4 Ton Van
- Express 3/4 Ton Van AWD V8-5.3L VIN T
- Impala
- K 1500 Suburban 4WD
- K 1500 Truck 4WD
- K 2500 Suburban 4WD
- K 2500 Truck 4WD
- K 3500 Truck 4WD
- K Tahoe 4WD
- Malibu V6-3.1L VIN J
- Monte Carlo
- S10/T10 Blazer 2WD V6-4.3L VIN X
- S10/T10 Blazer 4WD V6-4.3L VIN X
- S10/T10 P/U 2WD
- S10/T10 P/U 4WD V6-4.3L VIN X
- SSR V8-5.3L VIN P
- Silverado SS AWD V8-6.0L VIN N
- Tracker 2WD
- Tracker 4WD
- TrailBlazer 2WD
- TrailBlazer 4WD
- Venture V6-3.4L VIN E
- W 3500 Tiltmaster L4-4.8L DSL Turbo
- Astro
- Avalanche
- Blazer
- Cab & Chassis Silverado
- 2D Pickup Extra Cab, 6.0 U, 4WD, Automatic
- 2D Pickup Extra Cab, 6.0 U, 4WD, Part Time, Automatic
- 2D Pickup Extra Cab, 6.0 U, 4WD, Part Time, Standard
- 2D Pickup Extra Cab, 6.0 U, RWD, Automatic
- 2D Pickup Extra Cab, 6.0 U, RWD, Standard
- 2D Pickup Extra Cab, 6.6 1, 4WD, Automatic
- 2D Pickup Extra Cab, 6.6 1, 4WD, Standard
- 2D Pickup Extra Cab, 6.6 1, RWD, Automatic
- 2D Pickup Extra Cab, 6.6 1, RWD, Standard
- 2D Pickup Extra Cab, 8.1 G, 4WD, Automatic
- 2D Pickup Extra Cab, 8.1 G, 4WD, Standard
- 2D Pickup Extra Cab, 8.1 G, RWD, Automatic
- 2D Pickup Extra Cab, 8.1 G, RWD, Standard
- 2D Pickup, 6.0 U, 4WD, Automatic
- 2D Pickup, 6.0 U, 4WD, Part Time, Automatic
- 2D Pickup, 6.0 U, 4WD, Part Time, Standard
- 2D Pickup, 6.0 U, RWD, Automatic
- 2D Pickup, 6.0 U, RWD, Standard
- 2D Pickup, 6.6 1, 4WD, Automatic
- 2D Pickup, 6.6 1, 4WD, Standard
- 2D Pickup, 6.6 1, RWD, Automatic
- 2D Pickup, 6.6 1, RWD, Standard
- 2D Pickup, 8.1 G, 4WD, Automatic
- 2D Pickup, 8.1 G, 4WD, Standard
- 2D Pickup, 8.1 G, RWD, Automatic
- 2D Pickup, 8.1 G, RWD, Standard
- Cavalier
- Base, 2D Coupe, Automatic
- Base, 2D Coupe, Standard
- Base, 4D Sedan, L61, Automatic
- Base, 4D Sedan, L61, Standard
- Base, 4D Sedan, L61/KL6
- LS Sport, 2D Coupe, Automatic
- LS Sport, 2D Coupe, Standard
- LS Sport, 4D Sedan, 2.2 6
- LS Sport, 4D Sedan, 2.2 F, Automatic
- LS Sport, 4D Sedan, 2.2 F, Standard
- LS, 2D Coupe, Automatic
- LS, 2D Coupe, Standard
- LS, 4D Sedan, 2.2 6
- LS, 4D Sedan, 2.2 F, Automatic
- LS, 4D Sedan, 2.2 F, Standard
- Chevy Express
- G1500, Van Cargo, 4.3 X
- G1500, Van Cargo, 5.3 T
- G1500, Van Passenger, 4.3 X
- G1500, Van Passenger, 5.3 T
- G2500, Van Cargo Extended, 4.3 X, 4L60E/M30
- G2500, Van Cargo Extended, 4.3 X, 4L80E/MT1
- G2500, Van Cargo Extended, 4.8 V, 4L60E/M30
- G2500, Van Cargo Extended, 4.8 V, 4L80E/MT1
- G2500, Van Cargo Extended, 5.3 T, 4L60E/M30
- G2500, Van Cargo Extended, 5.3 T, 4L80E/MT1
- G2500, Van Cargo Extended, 6.0 U
- G2500, Van Cargo, 4.3 X, 4L60E/M30
- G2500, Van Cargo, 4.3 X, 4L80E/MT1
- G2500, Van Cargo, 4.8 V, 4L60E/M30
- G2500, Van Cargo, 4.8 V, 4L80E/MT1
- G2500, Van Cargo, 5.3 T, 4L60E/M30
- G2500, Van Cargo, 5.3 T, 4L80E/MT1
- G2500, Van Cargo, 6.0 U, LQ4
- G2500, Van Cargo, 6.0 U, LQ4/KL6
- G2500, Van Cargo, 6.0 U, LQ4/KL8
- G2500, Van Passenger Extended
- G2500, Van Passenger, LQ4
- G2500, Van Passenger, LQ4/KL6
- G2500, Van Passenger, LQ4/KL8
- G3500, Van Cargo Extended, 4.8 V
- G3500, Van Cargo Extended, 6.0 U
- G3500, Van Cargo, 4.8 V
- G3500, Van Cargo, 6.0 U, LQ4
- G3500, Van Cargo, 6.0 U, LQ4/KL6
- G3500, Van Cargo, 6.0 U, LQ4/KL8
- G3500, Van Passenger Extended, 4.8 V
- G3500, Van Passenger Extended, 6.0 U
- G3500, Van Passenger, 4.8 V
- G3500, Van Passenger, 6.0 U, LQ4
- G3500, Van Passenger, 6.0 U, LQ4/KL6
- G3500, Van Passenger, 6.0 U, LQ4/KL8
- H1500, Van Cargo
- H1500, Van Passenger
- H2500
- Corvette
- 50th Anniversary Edition, 2D Convertible, Automatic
- 50th Anniversary Edition, 2D Convertible, Standard
- 50th Anniversary Edition, 2D Coupe, Automatic
- 50th Anniversary Edition, 2D Coupe, Standard
- Base, 2D Convertible, Automatic
- Base, 2D Convertible, Standard
- Base, 2D Coupe, Automatic
- Base, 2D Coupe, Standard
- Z06, T56/M12
- Z06, T56/MM6
- Cutaway
- Impala
- Malibu
- Monte Carlo
- RV Cutaway
- S10 Pickup
- 2D Pickup, 2.2 H, Automatic
- 2D Pickup, 2.2 H, Standard
- 2D Pickup, 4.3 X, Automatic
- 2D Pickup, 4.3 X, Standard
- 3D Pickup Extra Cab, 2.2 H, Automatic
- 3D Pickup Extra Cab, 2.2 H, Standard
- 3D Pickup Extra Cab, 4.3 X, 4WD, Automatic
- 3D Pickup Extra Cab, 4.3 X, 4WD, Standard
- 3D Pickup Extra Cab, 4.3 X, RWD, Automatic
- 3D Pickup Extra Cab, 4.3 X, RWD, Standard
- 4D Pickup
- SSR
- Silverado
- 1500 HD, 4WD
- 1500 HD, RWD
- 1500, 2D Pickup, 4.3 X, 4WD, Automatic, Automatic
- 1500, 2D Pickup, 4.3 X, 4WD, Automatic, Standard
- 1500, 2D Pickup, 4.3 X, 4WD, Part Time, Automatic
- 1500, 2D Pickup, 4.3 X, 4WD, Part Time, Standard
- 1500, 2D Pickup, 4.3 X, RWD, Automatic
- 1500, 2D Pickup, 4.3 X, RWD, Standard
- 1500, 2D Pickup, 4.8 V, 4WD, Automatic, Automatic
- 1500, 2D Pickup, 4.8 V, 4WD, Automatic, Standard
- 1500, 2D Pickup, 4.8 V, 4WD, Part Time, Automatic
- 1500, 2D Pickup, 4.8 V, 4WD, Part Time, Standard
- 1500, 2D Pickup, 4.8 V, RWD, Automatic
- 1500, 2D Pickup, 4.8 V, RWD, Standard
- 1500, 2D Pickup, 5.3 T, 4WD, Automatic
- 1500, 2D Pickup, 5.3 T, 4WD, Part Time
- 1500, 2D Pickup, 5.3 T, RWD
- 1500, 2D Pickup, 5.3 Z, 4WD, Automatic
- 1500, 2D Pickup, 5.3 Z, 4WD, Part Time
- 1500, 2D Pickup, 5.3 Z, RWD
- 1500, 4D Pickup Extra Cab, 4.3 X, 4WD, Automatic
- 1500, 4D Pickup Extra Cab, 4.3 X, 4WD, Part Time
- 1500, 4D Pickup Extra Cab, 4.3 X, RWD
- 1500, 4D Pickup Extra Cab, 4.8 V, 4WD, Automatic
- 1500, 4D Pickup Extra Cab, 4.8 V, 4WD, Part Time
- 1500, 4D Pickup Extra Cab, 4.8 V, RWD
- 1500, 4D Pickup Extra Cab, 5.3 T, 4WD, Automatic
- 1500, 4D Pickup Extra Cab, 5.3 T, 4WD, Part Time
- 1500, 4D Pickup Extra Cab, 5.3 T, RWD
- 1500, 4D Pickup Extra Cab, 5.3 Z, 4WD, Automatic
- 1500, 4D Pickup Extra Cab, 5.3 Z, 4WD, Part Time
- 1500, 4D Pickup Extra Cab, 5.3 Z, RWD
- 1500, 4D Pickup Extra Cab, 6.0 N
- 2500 HD, 2D Pickup, 6.0 U, LQ4, 4WD, Automatic, Automatic
- 2500 HD, 2D Pickup, 6.0 U, LQ4, 4WD, Automatic, Standard
- 2500 HD, 2D Pickup, 6.0 U, LQ4, 4WD, Part Time, Automatic
- 2500 HD, 2D Pickup, 6.0 U, LQ4, 4WD, Part Time, Standard
- 2500 HD, 2D Pickup, 6.0 U, LQ4, RWD, Automatic
- 2500 HD, 2D Pickup, 6.0 U, LQ4, RWD, Standard
- 2500 HD, 2D Pickup, 6.0 U, LQ4/KL6, 4WD, Automatic
- 2500 HD, 2D Pickup, 6.0 U, LQ4/KL6, 4WD, Part Time
- 2500 HD, 2D Pickup, 6.0 U, LQ4/KL6, RWD
- 2500 HD, 2D Pickup, 6.6 1, 4WD, Automatic
- 2500 HD, 2D Pickup, 6.6 1, 4WD, Standard
- 2500 HD, 2D Pickup, 6.6 1, RWD, Automatic
- 2500 HD, 2D Pickup, 6.6 1, RWD, Standard
- 2500 HD, 2D Pickup, 8.1 G, 4WD, Automatic
- 2500 HD, 2D Pickup, 8.1 G, 4WD, Standard
- 2500 HD, 2D Pickup, 8.1 G, RWD, Automatic
- 2500 HD, 2D Pickup, 8.1 G, RWD, Standard
- 2500 HD, 4D Pickup Extra Cab, 6.0 U, LQ4, 4WD, Automatic, Automatic
- 2500 HD, 4D Pickup Extra Cab, 6.0 U, LQ4, 4WD, Automatic, Standard
- 2500 HD, 4D Pickup Extra Cab, 6.0 U, LQ4, 4WD, Part Time, Automatic
- 2500 HD, 4D Pickup Extra Cab, 6.0 U, LQ4, 4WD, Part Time, Standard
- 2500 HD, 4D Pickup Extra Cab, 6.0 U, LQ4, RWD, Automatic
- 2500 HD, 4D Pickup Extra Cab, 6.0 U, LQ4, RWD, Standard
- 2500 HD, 4D Pickup Extra Cab, 6.0 U, LQ4/KL6, 4WD, Automatic
- 2500 HD, 4D Pickup Extra Cab, 6.0 U, LQ4/KL6, 4WD, Part Time
- 2500 HD, 4D Pickup Extra Cab, 6.0 U, LQ4/KL6, RWD
- 2500 HD, 4D Pickup Extra Cab, 6.6 1, 4WD, Automatic
- 2500 HD, 4D Pickup Extra Cab, 6.6 1, 4WD, Standard
- 2500 HD, 4D Pickup Extra Cab, 6.6 1, RWD, Automatic
- 2500 HD, 4D Pickup Extra Cab, 6.6 1, RWD, Standard
- 2500 HD, 4D Pickup Extra Cab, 8.1 G, 4WD, Automatic
- 2500 HD, 4D Pickup Extra Cab, 8.1 G, 4WD, Standard
- 2500 HD, 4D Pickup Extra Cab, 8.1 G, RWD, Automatic
- 2500 HD, 4D Pickup Extra Cab, 8.1 G, RWD, Standard
- 2500 HD, 4D Pickup, 6.0 U, LQ4, 4WD, Automatic, Automatic
- 2500 HD, 4D Pickup, 6.0 U, LQ4, 4WD, Automatic, Standard
- 2500 HD, 4D Pickup, 6.0 U, LQ4, 4WD, Part Time, Automatic
- 2500 HD, 4D Pickup, 6.0 U, LQ4, 4WD, Part Time, Standard
- 2500 HD, 4D Pickup, 6.0 U, LQ4, RWD, Automatic
- 2500 HD, 4D Pickup, 6.0 U, LQ4, RWD, Standard
- 2500 HD, 4D Pickup, 6.0 U, LQ4/KL6, Automatic
- 2500 HD, 4D Pickup, 6.0 U, LQ4/KL6, Part Time
- 2500 HD, 4D Pickup, 6.6 1, 4WD, Automatic
- 2500 HD, 4D Pickup, 6.6 1, 4WD, Standard
- 2500 HD, 4D Pickup, 6.6 1, RWD, Automatic
- 2500 HD, 4D Pickup, 6.6 1, RWD, Standard
- 2500 HD, 4D Pickup, 8.1 G, 4WD, Automatic
- 2500 HD, 4D Pickup, 8.1 G, 4WD, Standard
- 2500 HD, 4D Pickup, 8.1 G, RWD, Automatic
- 2500 HD, 4D Pickup, 8.1 G, RWD, Standard
- 2500, 2D Pickup, LQ4, Automatic
- 2500, 2D Pickup, LQ4, Standard
- 2500, 2D Pickup, LQ4/KL6, Automatic
- 2500, 2D Pickup, LQ4/KL6, Standard
- 2500, 2D Pickup, LQ4/KL8, Automatic
- 2500, 2D Pickup, LQ4/KL8, Standard
- 2500, 4D Pickup Extra Cab, Automatic
- 2500, 4D Pickup Extra Cab, Part Time
- 3500, 2D Pickup, 6.0 U, LQ4, Automatic, Automatic
- 3500, 2D Pickup, 6.0 U, LQ4, Automatic, Standard
- 3500, 2D Pickup, 6.0 U, LQ4, Part Time, Automatic
- 3500, 2D Pickup, 6.0 U, LQ4, Part Time, Standard
- 3500, 2D Pickup, 6.0 U, LQ4/KL8
- 3500, 2D Pickup, 6.6 1, Automatic
- 3500, 2D Pickup, 6.6 1, Standard
- 3500, 2D Pickup, 8.1 G, Automatic
- 3500, 2D Pickup, 8.1 G, Standard
- 3500, 4D Pickup Extra Cab, 6.0 U, 4WD, Automatic, Automatic
- 3500, 4D Pickup Extra Cab, 6.0 U, 4WD, Automatic, Standard
- 3500, 4D Pickup Extra Cab, 6.0 U, 4WD, Part Time, Automatic
- 3500, 4D Pickup Extra Cab, 6.0 U, 4WD, Part Time, Standard
- 3500, 4D Pickup Extra Cab, 6.0 U, RWD, Automatic
- 3500, 4D Pickup Extra Cab, 6.0 U, RWD, Standard
- 3500, 4D Pickup Extra Cab, 6.6 1, 4WD, Automatic
- 3500, 4D Pickup Extra Cab, 6.6 1, 4WD, Standard
- 3500, 4D Pickup Extra Cab, 6.6 1, RWD, Automatic
- 3500, 4D Pickup Extra Cab, 6.6 1, RWD, Standard
- 3500, 4D Pickup Extra Cab, 8.1 G, 4WD, Automatic
- 3500, 4D Pickup Extra Cab, 8.1 G, 4WD, Standard
- 3500, 4D Pickup Extra Cab, 8.1 G, RWD, Automatic
- 3500, 4D Pickup Extra Cab, 8.1 G, RWD, Standard
- 3500, 4D Pickup, 6.0 U, 4WD, Automatic, Automatic
- 3500, 4D Pickup, 6.0 U, 4WD, Automatic, Standard
- 3500, 4D Pickup, 6.0 U, 4WD, Part Time, Automatic
- 3500, 4D Pickup, 6.0 U, 4WD, Part Time, Standard
- 3500, 4D Pickup, 6.0 U, RWD, Automatic
- 3500, 4D Pickup, 6.0 U, RWD, Standard
- 3500, 4D Pickup, 6.6 1, 4WD, Automatic
- 3500, 4D Pickup, 6.6 1, 4WD, Standard
- 3500, 4D Pickup, 6.6 1, RWD, Automatic
- 3500, 4D Pickup, 6.6 1, RWD, Standard
- 3500, 4D Pickup, 8.1 G, 4WD, Automatic
- 3500, 4D Pickup, 8.1 G, 4WD, Standard
- 3500, 4D Pickup, 8.1 G, RWD, Automatic
- 3500, 4D Pickup, 8.1 G, RWD, Standard
- Suburban
- Tahoe
- Tracker
- TrailBlazer
- Venture
Database: CHARM
CHARM manuals were retrieved from a set of DVDs released in late 2013. These manuals are usually the most detailed for the years in which they're available, but occasionally have missing or cut-off images.
Database: LEMON
LEMON manuals were retrieved in late 2025, so they have more up to date technical bulletins for example. However, they tend to be less detailed for older vehicles.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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