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 MANUALSGMC2004ENVOY 2WD L6-4.2L VIN SREPAIR AND DIAGNOSISSTEERING AND SUSPENSIONSTEERINGSTEERING COLUMNSERVICE AND REPAIRSTEERING COLUMN WIRE HARNESS
2004 GMC Envoy 2WD L6-4.2L VIN S
Steering Column Wire Harness
2004 GMC Envoy 2WD L6-4.2L VIN SSECTION Steering Column Wire Harness
Steering Column Wire Harness Assembly Replacement
Removal Procedure
Caution: Refer to SIR Caution in Service Precautions.
1. Disable the SIR system.
2. Remove the upper and lower trim covers.
3. Remove the wire harness strap.
4. Remove the steering wheel theft deterrent lock.
5. Rotate the key alarm connector (1) 90 degrees.
6. Gently pull the key alarm connector (1) out of the ignition lock cylinder case assembly (2).
7. Disconnect the connector from the ignition switch assembly.
8. Remove the wires encased in the ignition switch clip, which is located on the side of the ignition switch.
Important: If the steering wheel has steering wheel controls, the SIR coil and the wire harness assembly must come off as one piece.
9. Disconnect all connectors attached to the wire harness assembly.
Installation Procedure
1. If the steering wheel has steering wheel controls, install the SIR coil.
2. Connect all of the connectors from the new wire harness assembly.
3. Push the key alarm connector (1) into the ignition lock cylinder case assembly (2).
4. Rotate the key alarm connector (1) 90 degrees so that the key alarm connector (1) locks into place.
5. Install the steering wheel theft deterrent lock.
Caution: Refer to SIR Inflator Module Coil Caution in Service Precaution.
6. Install the wires back into the ignition switch clip (located on the side of the ignition switch).
7. Install the wire harness strap.
8. Install the upper and lower trim covers.
9. Enable the SIR system.
Removal Procedure
Caution: Refer to SIR Caution in Service Precautions.
1. Disable the SIR system.
2. Remove the upper and lower trim covers.
3. Remove the wire harness strap.
4. Remove the steering wheel theft deterrent lock.
5. Rotate the key alarm connector (1) 90 degrees.
6. Gently pull the key alarm connector (1) out of the ignition lock cylinder case assembly (2).
7. Disconnect the connector from the ignition switch assembly.
8. Remove the wires encased in the ignition switch clip, which is located on the side of the ignition switch.
Important: If the steering wheel has steering wheel controls, the SIR coil and the wire harness assembly must come off as one piece.
9. Disconnect all connectors attached to the wire harness assembly.
Installation Procedure
1. If the steering wheel has steering wheel controls, install the SIR coil.
2. Connect all of the connectors from the new wire harness assembly.
3. Push the key alarm connector (1) into the ignition lock cylinder case assembly (2).
4. Rotate the key alarm connector (1) 90 degrees so that the key alarm connector (1) locks into place.
5. Install the steering wheel theft deterrent lock.
Caution: Refer to SIR Inflator Module Coil Caution in Service Precaution.
6. Install the wires back into the ignition switch clip (located on the side of the ignition switch).
7. Install the wire harness strap.
8. Install the upper and lower trim covers.
9. Enable the SIR system.
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.