GM Service Manual Online
For 1990-2009 cars only

Center High-Mounted Stoplamp (CHMSL) Sedan

  1. Remove the center high-mounted stoplamp cover by pulling down on the cover edges.
  2. Turn the bulb socket being replaced counterclockwise one-quarter of a turn and remove the bulb.
  3. Replace it with the appropriate bulb.
  4. Replace the cover.

Center High-Mounted Stoplamp (CHMSL) Wagon

  1. Open the liftgate.
  2. Remove the center high-mounted stoplamp cover by pulling down on the cover edges.

  3. Object Number: 1222610  Size: B3
  4. Turn the bulb socket being replaced counterclockwise one-quarter of a turn and remove the bulb.
  5. Replace it with the appropriate bulb.
  6. Replace the cover.