GM Service Manual Online
For 1990-2009 cars only
    • The following materials may damage the vehicle finishes if left on painted surfaces:
      • Calcium chloride and other salts
      • Ice melting agents
      • Road oil and tar
      • Tree sap
      • Bird droppings
      • Chemicals from industrial chimneys
    • Use cleaners that are designated safe for painted surfaces for the removal of these materials.