GM Service Manual Online
For 1990-2009 cars only

Center High-Mounted Stoplamp (CHMSL) Hatchback

To replace a CHMSL bulb on the hatchback:

  1. Open the liftgate. See Liftgate for more information.

  2. Object Number: 2087204  Size: B1
  3. Pull down on the lamp assembly while holding the end of the bracket.
  4. Remove the lens cover using a flat head screwdriver.
  5. Remove the bulb by pulling it straight out of the bulb holder.
  6. Install the new bulb.
  7. Reverse Steps 1 through 3 to reinstall.

Center High-Mounted Stoplamp (CHMSL) Sedan

To replace a CHMSL bulb on the sedan:

  1. Open the trunk. See Trunk for more information.
  2. Remove the two screws and the lamp housing. Disconnect the wiring harness connector before removing the lamp housing.

  3. Object Number: 1765216  Size: B2
  4. Remove the five screws and the reflector assembly.
  5. Remove the bulb by pulling it straight out of the bulb holder.
  6. Install the new bulb.
  7. Reverse Steps 1 through 3 to reinstall.