GM Service Manual Online
For 1990-2009 cars only
  1. Quickly remove the stains before the stains set.
  2. Use a clean cloth or a sponge to clean the area. Use a soft brush when stains persist.
  3. Use solvent-type cleaners only in a well ventilated area.
  4. Do NOT saturate the stained area.
  5. Clean the entire area immediately when a ring forms after spot cleaning the area.
  6. Follow the manufacturer's instructions for all the cleaning agents.