GM Service Manual Online
For 1990-2009 cars only

High Mount Stop Lamp Replacement Sedan

Removal Procedure


    Object Number: 1217842  Size: MH
  1. Open the rear compartment.

  2. Object Number: 1215794  Size: SH
  3. From the underside of the rear compartment, remove the bolts from the center high-mounted stop lamp rear cover.
  4. Pinch together the clip, extending through the rear lamp cover. Remove the rear cover from the center high-mounted stop lamp lens assembly.
  5. Pinch the top and bottom retaining tabs together to release the center high-mounted stop lamp lens assembly from the rear compartment.
  6. Disconnect the electrical connector.
  7. Remove the center high-mounted stop lamp from the vehicle.

Installation Procedure


    Object Number: 1217842  Size: MH
  1. Press the center high-mounted stop lamp lens assembly into the rear compartment outer panel.
  2. From the underside of the rear compartment, position the rear cover to slide over the clip. Snap the cover onto the center high-mounted stop lamp lens assembly.
  3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1215794  Size: SH
  4. Install the bolts to the center high-mounted stop lamp rear cover.
  5. Tighten
    Tighten the center high-mounted stop lamp bolts to 2 N·m (18 lb in).

  6. Connect the electrical connector.
  7. Close the rear compartment.

High Mount Stop Lamp Replacement Extended Sedan

Removal Procedure


    Object Number: 1326340  Size: SH
  1. Open the liftgate.
  2. Remove the liftgate upper trim panel. Refer to Liftgate Trim Panel Replacement in Body Rear End.
  3. Remove the nuts from the center high-mounted stop lamp.
  4. Push upward slightly on the center high-mounted stop lamp (CHMSL) to unseat the lamp from the liftgate.
  5. From the outside of the liftgate, carefully pull the CHMSL outward to clear the rear spoiler and the liftgate window.

  6. Object Number: 1326370  Size: SH
  7. Disconnect the electrical connector.

Installation Procedure


    Object Number: 1326370  Size: SH
  1. Connect the electrical connector.
  2. Position the CHMSL to the liftgate. Carefully seat the CHMSL into the lamp opening.
  3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1326340  Size: SH
  4. From the underside of the liftgate, install the nuts to the CHMSL.
  5. Tighten
    Tighten the center high-mounted stop lamp bolts to 2 N·m (18 lb in).

  6. Close the liftgate.