GM Service Manual Online
For 1990-2009 cars only

Steel and PA + PPE and SMC Rigid Plastic

  1. Wash the damaged panel and surrounding areas with water and a mild detergent, rinse thoroughly and let dry.
  2. Clean the panel with PPG DD837 Acryli-Clean™ or equivalent.
  3. Repair all damaged areas. Refer to the appropriate repair section for the procedure.
  4. Sand the entire panel with 240 grade sandpaper.
  5. Clean all sanded areas with PPG D846 Multi-Prep Cleaner or equivalent to remove sanding residue.
  6. Use an air blow gun to remove all dirt from the cracks and surfaces of the vehicle.
  7. Apply 1 coat of DP90 Epoxy Primer or equivalent primer over all bare metal areas. Use 40 - 50 psi of air pressure at the gun.
  8. Allow 30 minutes dry time before applying the primer surfacer.
  9. Apply 2-3 medium wet coats of D839 Acrylic Urethane Primer Surfacers or equivalent to the component primer surfacer.
  10. Apply a light guide coat over the primer. Over reduced (150-200 percent) conventional primer surfacers will work well as a guide coat.
  11. Allow the 2 component primers to dry for 1-¼ hours, under normal conditions, before sanding. Wet sand with 400 grade (or finer) sandpaper or dry sand with 320 grade, or finer, sandpaper. Use the guide coat as an indicator to locate imperfections which need to be sanded out.

Flexible Plastic Parts

Flexible plastic service replacement parts are primed from the factory.

  1. Wash the damaged panel and surrounding areas with water and a mild detergent, rinse thoroughly and let dry.
  2. Clean the panel with PPG D837 Acryli-Clean™ or equivalent.
  3. Repair all damaged areas. Refer to the appropriate repair section for procedure.
  4. Sand the entire panel with 240 grade sandpaper.
  5. Clean all sanded areas with PPG D846 Multi-Prep or equivalent to remove sanding residue.
  6. Use an air blow gun to remove all dirt from the cracks and surfaces of the vehicle.
  7. Apply 1 medium wet coat of PPG D820 Polypropylene Primer or equivalent over all bare plastic areas.
  8. Allow 10-15 minutes dry time before applying the primer surfacer.
  9. Apply 2 or 3 medium wet coats of PPG Urethane. Prime surfaces with D814 Flexible Hardener or equivalent.