GM Service Manual Online
For 1990-2009 cars only

When the fiberglass laminate is not pierced through or the damage extensive, the damaged area can be repaired using the following procedure:


    Object Number: 95551  Size: SH
  1. Clean and inspect the damaged area. Refer to General Plastic Repair .
  2. Finish the cleanup using a tack rag and air.

  3. Object Number: 95530  Size: SH
  4. Sand the damaged area down to the fiberglass laminate.
  5. Grind or file the edges of the damaged area in order to form a dish.
  6. • The side of the dish should have a pitch for a maximum bonding surface.
    • Use a sander with a vacuum attachment in order to minimize dust.

    Object Number: 95514  Size: SH
  7. Scuff sand the area surrounding the damaged area in order to provide a good bonding surface.

  8. Object Number: 95551  Size: SH
  9. Clean the repair area again using a water based wax and grease remover.
  10. Finish the cleanup using a tack rag and air.

  11. Object Number: 95515  Size: SH
  12. Mix the recommended repair material.
  13. Apply the repair material to the damaged area until the repair is slightly higher than the surrounding area.

  14. Object Number: 193342  Size: SH
  15. Cure the repair material. Follow the manufacturer's recommendations.

  16. Object Number: 95541  Size: SH
  17. Rough out the surface using a #80 grit disc on a D A sander or a curved-tooth body file.

  18. Object Number: 95546  Size: SH
  19. Apply a polyester type material, to provide a uniform surface for sanding, such as Silkens Polystop LP, or equivalent.
  20. Prime and refinish as necessary.