GM Service Manual Online
For 1990-2009 cars only

Rear Spoiler Replacement Without Accessory Package

Removal Procedure

  1. Open the rear compartment.
  2. Remove the rear compartment lid trim. Refer to Rear Compartment Lid Inner Panel Trim Replacement .

  3. Object Number: 1250597  Size: SH
  4. Disconnect the spoiler high mount stop lamp connector (1) from the rear compartment lid harness connector (2).

  5. Object Number: 1250609  Size: SH
  6. Using a flat-bladed tool, remove the retainer (3) from the high mount stop lamp connector (2) and remove each wiring terminal (1).

  7. Object Number: 1250616  Size: SH
  8. From the underside of the rear compartment lid (1), remove the 4 nuts (4) and washers (3) attaching the rear lid spoiler (2).
  9. Remove the rear lid spoiler (2), withdrawing the wiring harness (5) from the right-hand side.

  10. Object Number: 1250617  Size: SH
  11. Remove the screw caps (1) and the screws (2) attaching the high mount stop lamp assembly (3) to the rear lid spoiler (4).
  12. Remove the high mount stop lamp assembly (3), withdrawing the harness (5) from the spoiler cavity.

Installation Procedure


    Object Number: 1250617  Size: SH
  1. Using a small paint brush, apply zinc-chromate primer to the spoiler stud inner and outer holes.
  2. Clean the compartment lid attachment surface using isopropyl alcohol and allow to flash OFF for 30 seconds.
  3. Install the high mount stop lamp harness (5) through the spoiler cavity and install the high mount stop lamp assembly (3).
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the screws (2) that attach the high mount stop lamp assembly (3) to the rear lid spoiler (4).
  6. Tighten
    Tighten the screws to 5 N·m (44 lb in).

  7. Install the screw caps (1) over the screws (2).

  8. Object Number: 1250616  Size: SH
  9. Install the wiring harness (5) to the right side of the rear compartment lid (1).
  10. Position the rear compartment lid spoiler (2) to the rear compartment lid (1).
  11. From the underside of the rear compartment lid (1), install the 4 washers (3) and nuts (4).
  12. Tighten
    Tighten the nuts to  3 N·m (26 lb in).


    Object Number: 1250609  Size: SH
  13. Install the wiring terminals (1) to the high mount stop lamp connector (2).
  14. Install the retainer (3) to the high mount stop lamp connector (2).

  15. Object Number: 1250597  Size: SH
  16. Install the high mount stop lamp connector (1) to the rear compartment lid harness connector (2).
  17. Install the rear compartment lid trim. Refer to Rear Compartment Lid Inner Panel Trim Replacement .
  18. Close the rear compartment lid.

Rear Spoiler Replacement With Accessory Package

Removal Procedure

  1. Open the rear compartment.
  2. Remove the rear compartment lid trim. Refer to Rear Compartment Lid Inner Panel Trim Replacement .

  3. Object Number: 1250597  Size: SH
  4. Disconnect the spoiler high mount stop lamp connector (1) from the rear compartment lid harness connector (2).

  5. Object Number: 1250609  Size: SH
  6. Using a flat-bladed tool, remove the retainer (3) from the high mount stop lamp connector (2) and remove each wiring terminal (1).

  7. Object Number: 1550571  Size: SH
  8. From the underside of the rear compartment lid, remove the 5 screws attaching the rear lid spoiler.
  9. Remove the rear lid spoiler, withdrawing the wiring harness from the rear compartment lid.

  10. Object Number: 1250617  Size: SH
  11. Remove the screw caps (1) and the screws (2) attaching the high mount stop lamp assembly (3) to the rear lid spoiler (4).
  12. Remove the high mount stop lamp assembly (3), withdrawing the harness (5) from the spoiler cavity.

Installation Procedure


    Object Number: 1250617  Size: SH
  1. Using a small paint brush, apply zinc-chromate primer to the spoiler stud inner and outer holes.
  2. Clean the compartment lid attachment surface using isopropyl alcohol and allow to flash OFF for 30 seconds.
  3. Install the high mount stop lamp harness (5) through the spoiler cavity and install the high mount stop lamp assembly (3).
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the screws (2) that attach the high mount stop lamp assembly (3) to the rear lid spoiler (4).
  6. Tighten
    Tighten the screws to 5 N·m (44 lb in).

  7. Install the screw caps (1) over the screws (2).

  8. Object Number: 1550571  Size: SH
  9. Install the wiring harness to the rear compartment lid.
  10. Position the rear compartment lid spoiler to the rear compartment lid.
  11. From the underside of the rear compartment lid, install the 5 screws.
  12. Tighten
    Tighten the screws to  5 N·m (44 lb in).


    Object Number: 1250609  Size: SH
  13. Install the wiring terminals (1) to the high mount stop lamp connector (2).
  14. Install the retainer (3) to the high mount stop lamp connector (2).

  15. Object Number: 1250597  Size: SH
  16. Install the high mount stop lamp connector (1) to the rear compartment lid harness connector (2).
  17. Install the rear compartment lid trim. Refer to Rear Compartment Lid Inner Panel Trim Replacement .
  18. Close the rear compartment lid.