Service Procedure

IMPORTANT
THE PATCH, GM PART NUMBER 11515174 SHOULD BE CUT IN HALF LENGTH-WISE, AND EACH PIECE THEN CUT IN THIRDS, TO PROVIDE SIX (6) PIECES (EACH APPROXIMATELY 2-1/8" X 2-1/2") FOR EACH PATCH. TWO (2) OF THE 2-1/8" X 2-1/2" PIECES ARE TO BE USED PER VEHICLE AS "ANTI-RATTLE" PATCHES.





1. Remove the rear seat cushion assembly (see Figure)

2. SEDANS AND CUTLASS CRUISERS ONLY: Remove rear attaching screw from carpet retainer at rear door opening.

3. SEDANS AND CUTLASS CRUISERS ONLY: Carefully pull lock pillar trim from under the sill plate and using a block of wood as a brace, reposition the lock pillar trim inboard to provide access to the seat belt attaching bolt.

COUPES ONLY: Using a utility knife (or other suitable tool), remove a portion of the trim panel at the seat belt opening. This portion should be equal to the width of the opening on the trim panel. Caution should be taken not to damage seal belt.





5. Remove release paper from back of one (1) 1-1/8" x 2-1/2" noise control patch, position and install patch to body (prior to bolt installation) directly over seat belt attaching hole (see Figure).

6. Apply high strength thread adhesive such as GM # 12345498 or Loctite # 272 (or equivalent) to new anchor bolt threads prior to bolt installation.

7. Reinstall seat belt using new attaching bolt and torque to 42 Nm (31 Lb. Ft.).

8. SEDANS AND CUTLASS CRUISERS ONLY: Remove wood block, reinstall lock pillar trim and carpet retainer attaching screw.

9. Repeat steps 2 though 8 for the other side of vehicle.

10. Install a Campaign Identification Label.