GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 25070 Heat Gun

Removal Procedure

Notice: Use of harsh chemicals when cleaning can damage exterior lamps. Suggested cleaners are a mild soap and water, or Varnish Makers and Painters (VM&P) Naptha. VM&P Naptha is a specific type of naptha and should not be substituted by any other naptha.


    Object Number: 708525  Size: SH
  1. Open the rear compartment.
  2. Disconnect the high-mount stop lamp electrical connector from the rear compartment lid harness.
  3. Remove the rear compartment lid spoiler nuts from the spoiler.
  4. Use the J 25070 to apply heat to the rear spoiler mounting locations.
  5. Apply heat 152mm (6 in) from the surface using a circular motion for about 30 seconds.

  6. Use a small flat-bladed tool to lift the rear spoiler from the rear compartment lid being careful not to damage paint.
  7. Remove the rear spoiler and wiring harness from the rear compartment lid.
  8. Remove the high-mount stop lamp screws from the rear spoiler.
  9. Remove the high-mount stop lamp from the rear spoiler.
  10. Use 3M™ scotch brite molding adhesive remover disk 3M™  P/N 07501 (or equivalent) to clean the rear spoiler adhesive from the rear compartment lid and/or the rear spoiler.
  11. Use Varnish Makers and Painters (VM&P) naphtha or equivalent to clean the body panel.

Installation Procedure


    Object Number: 708525  Size: SH
  1. Install the high-mount stop lamp to the rear spoiler.
  2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the high-mount stop lamp screws to the rear spoiler.
  4. Tighten
    Tighten the high-mount stop lamp screws to 2 N·m (18 lb in).

  5. Use theJ 25070 to heat the rear spoiler mounting surfaces.
  6. Remove the backing from adhesive on the rear spoiler mounting locations.
  7. Route the high-mount stop lamp wiring harness through the rear compartment lid.
  8. Position the studs of the rear spoiler into the clearance holes of the rear compartment lid.
  9. Important: Do not touch the adhesive backing.

  10. Apply even pressure to the rear spoiler to allow for proper adhesion to the rear compartment lid.
  11. Install the rear compartment lid spoiler nuts.
  12. Tighten
    Tighten the nuts to 5 N·m (44 lb in).

  13. Connect the high-mounted stop lamp electrical connector.
  14. Close the rear compartment.