GM Service Manual Online
For 1990-2009 cars only

High Mount Stop Lamp Replacement Coupe

Removal Procedure


    Object Number: 866822  Size: SH
  1. Remove the center high-mount stop lamp cover. Pull down by grasping the cover around the edges.
  2. Disconnect the electrical harness only if removing the center high-mount stop lamp.
  3. If removing the bulbs, twist the sockets out of the stop lamp and remove the bulbs.
  4. Remove the center high-mount stop lamp by removing the retainer screws.

Installation Procedure

  1. Install the center high-mount stop lamp with the screws.
  2. Connect the electrical harness.

  3. Object Number: 866828  Size: SH
  4. Install the cover by placing the tabs in the slots, then firmly press the cover into place.

High Mount Stop Lamp Replacement Wagon

Removal Procedure


    Object Number: 865671  Size: SH
  1. Open the lift gate.
  2. Remove the plastic fasteners to the upper garnish molding by pushing the center of the fastener in.
  3. Remove the molding.
  4. If removing the bulbs, twist the sockets out of the stop lamp and remove the bulbs.
  5. Disconnect the electrical harness.
  6. Remove the center high mount stop lamp by removing the retainer screws.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 865251  Size: SH
  1. Install the center high mount stop lamp with the screws.
  2. Tighten
    Tighten the center high-mount stop lamp (Sedan/Wagon) to 2.5 N·m (19 lb in).

  3. Connect the electrical harness.
  4. Install the upper garnish molding with the plastic fasteners.
  5. Close the lift gate.

High Mount Stop Lamp Replacement Sedan

Removal Procedure


    Object Number: 865246  Size: SH

    Notice: Do not pull on edges of center high-mount stop lamp cover. Damage to cover may result. Slide fingers between cover and lamp and pull down carefully.

  1. Remove the center high-mount stop lamp cover.
  2. Disconnect the electrical harness only if removing the center high-mount stop lamp.
  3. If removing bulbs, twist the sockets out of the stop lamp and remove the bulbs.
  4. Remove the center high-mount stop lamp by removing the retainer screws.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 865251  Size: SH
  1. Install the center high-mount stop lamp with the screws.
  2. Tighten
    Tighten the center high-mount stop lamp (Sedan/Wagon) to 2.5 N·m (19 lb in).

  3. Connect the electrical harness.
  4. Install the cover by placing the tabs in the slots, then gently press the cover into place.