Front Fog Lamp Bulb Life Is Too Short (Install Jumper Harness)

Some customers may comment that the front fog lamp bulb life is too short.

To correct this condition, install a fog lamp jumper harness that will slightly reduce the voltage to the front fog lamps. This will NOT cause a noticeable change in the brightness of the fog lamps. Use the following procedure to install the front fog lamp jumper harness:

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in the General Information sub-section of the Service Information (SI Document ID #439413)
2. Remove the front air deflector. Refer to the Air Deflector Replacement-Front procedure in SI (Document ID #632192)
3. Disconnect the electrical connectors from the back of both front fog lamp bulbs.
4. Cut off the fog lamp bulb connector from both front fog lamp wiring harnesses.
5. Using the contents of the jumper harness kit, P/N 25754206, splice in the new fog lamp wiring harness and connector. Use another jumper harness kit for the front fog lamp on the opposite side of the vehicle.
6. Connect both front fog lamp electrical connectors.
7. Secure both front fog lamp wiring harnesses using the tie straps provided in the jumper harness kits.
8. Install the front air deflector. Refer to the Air Deflector Replacement-Front procedure in SI (Document ID #632192).
9. Lower the vehicle.
10. Test the operation of both front fog lamps.

Parts are currently available from GMSPO.

For vehicles repaired under warranty, use: