Warning: Exposure to isocyanates during paint preparation and application processes can cause severe breathing problems. Read and follow all of the instructions from the manufacturers of painting materials, equipment, and protective gear.

Warning: Refer to Eye Protection Warning in the Preface section.

All paint finish repairs of rigid exterior surfaces must meet GM standards. The GM Approved Refinish Materials book GM P/N GM4901M-D identifies the paint systems you may use. Always refer to the latest revision of the 4901M-D book. All approved products, including volatile organic compound (VOC) compliant regulations are listed in the system approach recommended by the individual manufacturer. Refer to the manufacturer's instructions for the detailed procedures for materials used in the paint system in the painting repairs of rigid exterior surfaces. All components of an approved paint system have been engineered in order to ensure proper adhesion between layers.

If necessary, spot repairs or color blending in an open panel can be done. However, do not blend clearcoat in an open panel. Always apply clearcoat to the next break point, body side molding, feature line, or the next panel.

Do not mix paint systems or substitute a product of one manufacturer for another manufacturer's product. If incompatible products are used together the following problems may occur: