GM Service Manual Online
For 1990-2009 cars only

High Mount Stop Lamp Replacement Rear Spoiler

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1723016  Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the spoiler. Refer to Rear Spoiler Replacement .
  3. Remove the screws and the spoiler CHMSL.
  4. Disconnect the electrical connector.

Installation Procedure


    Object Number: 1723016  Size: SH
  1. Connect the electrical connector.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the spoiler CHMSL with the screws.
  4. Tighten
    Tighten the CHMSL mounting screws to 3 N·m (27 lb in).

  5. Install the spoiler. Refer to Rear Spoiler Replacement .
  6. Connect the negative battery cable.

High Mount Stop Lamp Replacement Notchback

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1248421  Size: SH
  1. Disconnect the negative battery cable.
  2. Open the rear deck lid.
  3. Remove the screws and the center high-mounted stop lamp (CHMSL).
  4. Remove the CHMSL bulb.

Installation Procedure


    Object Number: 1248421  Size: SH
  1. Install the CHMSL bulb.
  2. Install the CHMSL with the screws.
  3. Connect the negative battery cable.

High Mount Stop Lamp Replacement Hatchback

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1248422  Size: SH
  1. Disconnect the negative battery cable.
  2. Open the hatchback door.
  3. Pry open the center high-mounted stop lamp (CHMSL) access cover with a screwdriver.
  4. Disconnect the electrical connector.
  5. Remove the screws and the CHMSL.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1248422  Size: SH
  1. Install the CHMSL with the screws.
  2. Tighten
    Tighten the CHMSL mounting screws to 3 N·m (27 lb in).

  3. Connect the electrical connector.
  4. Close the CHMSL access cover.
  5. Connect the negative battery cable.