GM Service Manual Online
For 1990-2009 cars only

The following materials may damage vehicle finishes if left on painted surfaces:

    â€¢ Calcium chloride and other salts
    â€¢ Ice melting agents
    â€¢ Road oil and tar
    â€¢ Tree sap
    â€¢ Bird droppings
    â€¢ Chemicals from industrial chimneys

Use cleaners that are marked safe for painted surfaces for removal of these materials.