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 Chevrolet Express 1/2 Ton Van V6-4.3L VIN XFACTORY OEM SERVICE PROCEDURE
Seat Track Replacement - Rear
Seat Track Replacement - Rear
Removal Procedure
Important:
* The nuts that retain the rear passenger seat floor rail on the left hand side of the vehicle can be accessed from underneath the vehicle.
* The right hand side rear passenger seat floor rails are similar, but require that the heat shields be removed for access to the floor rail nuts.
* The 12 passenger extended van and the 15 passenger van reinforcements are used along with the rear seat floor rails. The reinforcements are installed on the underside of the vehicle to the floor rail studs, and held in place by the floor rail retaining nuts. If you remove the reinforcements, reinstall the reinforcements.
1. Remove the rear passenger seats from the vehicle. Refer toSeat Replacement - Rear Bench (Seat Replacement - Rear Bench) .
2. Raise the vehicle and support the vehicle with safety stands. Refer toLifting and Jacking the Vehicle (Service and Repair) in General Information.
3. Remove the spare tire from the vehicle.
4. Remove the heat shields from the vehicle. Refer toExhaust Heat Shield Replacement - Frame in Engine Exhaust.
5. Remove the nuts (3) that retain the floor rail to the floor of the vehicle.
6. Remove the rear seat track reinforcements from the seat track studs (12 and 15 Passenger).
7. Lower the vehicle.
8. Remove the rear floor mat/carpet. Refer to Mat/Carpet Replacement - Rear Floor (Passenger Models) (Mat/Carpet Replacement - Rear Floor (Passenger Models))Mat/Carpet Replacement - Rear Floor (Cargo Models) (Mat/Carpet Replacement - Rear Floor (Cargo Models)) in Interior Trim.
9. Remove the floor rail (1, 2) from the vehicle.
Installation Procedure
1. Position the floor rail (2) to the vehicle.
2. Install the rear floor mat/carpet. Refer to Mat/Carpet Replacement - Rear Floor (Passenger Models) (Mat/Carpet Replacement - Rear Floor (Passenger Models))Mat/Carpet Replacement - Rear Floor (Cargo Models) (Mat/Carpet Replacement - Rear Floor (Cargo Models)) in Interior Trim.
3. Raise the vehicle and support the vehicle with safety stands. Refer toLifting and Jacking the Vehicle (Service and Repair) in General Information.
4. Install the rear seat track reinforcements to the seat track studs (12 and 15 Passenger).
5. Inspect the nuts (3) in order to ensure that the sealer is intact.
6. If the sealer is not intact, apply a medium bodied sealer to the nuts before installing.
Notice: Refer to Fastener Notice in Cautions and Notices.
7. Install the nuts to retain the floor rail to the vehicle.
Tighten the nuts to 43 N.m (32 lb ft).
8. Install the heat shields to the vehicle. Refer toExhaust Heat Shield Replacement - Frame in Engine Exhaust.
9. Install the spare tire to the vehicle.
10. Remove the safety stands.
11. Lower the vehicle.
12. Install the rear passenger seats to the vehicle. Refer toSeat Replacement - Rear Bench (Seat Replacement - Rear Bench) .
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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