GM Service Manual Online
For 1990-2009 cars only
  1. Open the liftgate. See "Liftgate" for more information.

  2. Object Number: 1905741  Size: G1
  3. Remove the two pins in the tailgate trim.

  4. Object Number: 1905742  Size: G1
  5. Remove the tailgate trim.

  6. Object Number: 1905743  Size: G1
  7. Unlock the six Center High-Mounted Stoplamp (CHMSL) clips.

  8. Object Number: 1905744  Size: G1
  9. Remove the CHMSL from the top of the tailgate.
  10. Reverse Steps 1 through 3 to reinstall the lamp assembly.