GM Service Manual Online
For 1990-2009 cars only

To replace a front sidemarker bulb, do the following:

  1. Turn the wheel to allow access to the wheel well.

  2. Object Number: 1479857  Size: B4
  3. Remove the five fasteners along the outer edge of the wheel well.
  4. Pull back the wheel well trim.
  5. Reach in and locate the sidemarker bulb.
  6. Remove the bulb socket by turning it counterclockwise.

  7. Object Number: 1479859  Size: A3
  8. Remove the bulb by pushing in on the tab on the bulb socket and then remove the bulb.
  9. Replace with a new bulb.
  10. Replace the bulb socket by turning it clockwise into the bulb assembly.
  11. Replace the fasteners into the wheel well trim.
  12. When replacing the fasteners, the two largest fasteners will be replaced in the two bottom positions of the wheel well trim. If not, you will find that the fasteners do not fit properly.