GM Service Manual Online
For 1990-2009 cars only

Center High-Mounted Stoplamp (CHMSL) SL, SL1, SL2, SC1, SC2 Models Only

For the type of bulb required for replacement, see Replacement Bulbs .

To change a CHMSL bulb, do the following:

  1. Remove the CHMSL cover by pulling down on the cover edges.

  2. Object Number: 1225899  Size: B3
  3. Turn the bulb socket out of the stop lamp and remove the bulb.
  4. Replace with the appropriate bulb.
  5. Replace the cover.

Center High-Mounted Stoplamp (CHMSL) SW2Only


Object Number: 1558045  Size: B3

For the type of bulb required for replacement, see Replacement Bulbs .

To change a CHMSL bulb, do the following:

  1. Open the liftgate.
  2. Remove plastic fasteners to upper garnish molding by pushing the center pin of the fastener until it clicks and pull out the fastener.
  3. Pull the garnish molding away from the liftgate to disengage the clips at the center of the panel.
  4. Remove the bulb from the housing, and replace with the appropriate bulb.