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.
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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4WD L6-4.2L VIN SREPAIR AND DIAGNOSISBODY AND FRAMESEATSSEAT BACKSERVICE AND REPAIRPROCEDURESSEAT BACK REPLACEMENT - REAR NO. 1 - 1
2003 Chevrolet TrailBlazer 4WD L6-4.2L VIN S
Seat Back Replacement - Rear No. 1 - 1
2003 Chevrolet TrailBlazer 4WD L6-4.2L VIN SSECTION Seat Back Replacement - Rear No. 1 - 1
SEAT BACK REPLACEMENT - REAR NO. 1 (TRAILBLAZER, ENVOY, BRAVADA)
REMOVAL PROCEDURE
1. Tumble the left seat back in order to gain access to the left 2 rear seat back mounting nuts.
2. Remove the left 3 rear seat back mounting nuts.
3. Return the left seat back to the upright position.
4. Remove the left 2 front seat back mounting nuts.
5. Remove the left seat back from the vehicle.
6. If removing the right seat back, perform the following:
6.1. Remove the left seat back first.
6.2. Tumble the right seat back in order to gain access to the right rear seat back mounting nut.
6.3. Remove the right rear seat back mounting nut.
6.4. Return the right seat back to the upright position.
6.5. Remove the right front seat back mounting nut.
6.6. Remove the navigation control processor bracket from the floor panel, if equipped.
6.7. Remove the right seat back from the vehicle.
INSTALLATION PROCEDURE
1. If the right seat back was removed, perform the following:
1.1. Position the right seat back to the vehicle.
1.2. Install the navigation control processor bracket, if equipped.
1.3. Install the right front rear seat back mounting nut.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the rear seat back mounting nut to 45 N.m (33 lb ft).
1.4. Tumble the right seat back in order to gain access to the right rear seat stud.
1.5. Install the right rear seat back mounting nut.
Tighten
Tighten the rear seat back mounting nut to 45 N.m (33 lb ft).
1.6. Return the right seat back to the upright position.
2. Position the left seat back to the vehicle.
3. Install the left 3 front seat back mounting nuts.
Tighten
Tighten the rear seat back mounting nuts to 45 N.m (33 lb ft).
4. Tumble the left seat back in order to gain access to the left rear seat studs.
5. Install the left 2 rear seat back mounting nuts.
Tighten
Tighten the nuts to 45 N.m (33 lb ft).
6. Return the left seat back to the upright position.
REMOVAL PROCEDURE
1. Tumble the left seat back in order to gain access to the left 2 rear seat back mounting nuts.
2. Remove the left 3 rear seat back mounting nuts.
3. Return the left seat back to the upright position.
4. Remove the left 2 front seat back mounting nuts.
5. Remove the left seat back from the vehicle.
6. If removing the right seat back, perform the following:
6.1. Remove the left seat back first.
6.2. Tumble the right seat back in order to gain access to the right rear seat back mounting nut.
6.3. Remove the right rear seat back mounting nut.
6.4. Return the right seat back to the upright position.
6.5. Remove the right front seat back mounting nut.
6.6. Remove the navigation control processor bracket from the floor panel, if equipped.
6.7. Remove the right seat back from the vehicle.
INSTALLATION PROCEDURE
1. If the right seat back was removed, perform the following:
1.1. Position the right seat back to the vehicle.
1.2. Install the navigation control processor bracket, if equipped.
1.3. Install the right front rear seat back mounting nut.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the rear seat back mounting nut to 45 N.m (33 lb ft).
1.4. Tumble the right seat back in order to gain access to the right rear seat stud.
1.5. Install the right rear seat back mounting nut.
Tighten
Tighten the rear seat back mounting nut to 45 N.m (33 lb ft).
1.6. Return the right seat back to the upright position.
2. Position the left seat back to the vehicle.
3. Install the left 3 front seat back mounting nuts.
Tighten
Tighten the rear seat back mounting nuts to 45 N.m (33 lb ft).
4. Tumble the left seat back in order to gain access to the left rear seat studs.
5. Install the left 2 rear seat back mounting nuts.
Tighten
Tighten the nuts to 45 N.m (33 lb ft).
6. Return the left seat back to the upright position.
RENDER: 1.0x
NO RELATED
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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.