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 Replacement
Seat Replacement
Removal Procedure
Caution: Refer to SIR Caution in Cautions and Notices.
1. Disable the Sir. Refer to SIR Disabling and Enabling Zone 3 or SIR Disabling and Enabling Zone 5 in SIR.
2. If seat is equipped with power seat motors, disconnect the electrical connector from the seat assembly.
3. Remove the nuts (3) that retain the seat assembly to the vehicle.
4. Remove the front seat assembly from the vehicle.
Installation Procedure
1. Position the front seat assembly into the vehicle.
Notice: Refer to Fastener Notice in Cautions and Notices.
2. Install the nuts (3).
Tighten the nuts to 60 N.m (44 lb ft).
3. Connect the electrical connector to the seat assembly, if equipped with power seat motors.
4. Enable the SIR. Refer to SIR Disabling and Enabling Zone 3 or SIR Disabling and Enabling Zone 5 in SIR.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.