GM Service Manual Online
For 1990-2009 cars only

Center High-Mounted Stoplamp (CHMSL) With Spoiler

  1. Unscrew the bulb assembly from the spoiler.
  2. Gently pull out the bulb assembly.
  3. Remove the bulb(s) by gently pulling the bulb(s) from the assembly.
  4. Replace the bulb(s) and reverse these steps to reinstall the bulb assembly.

Center High-Mounted Stoplamp (CHMSL) Without Spoiler

  1. Open the trunk and view the access hole under the rear shelf.
  2. Remove the bulb socket by turning it in either direction, then pull down.
  3. Remove the bulb and replace it.
  4. Reinstall the bulb socket into the CHMSL.