GMNA GM9620P PDF

This test procedure covers the general qualification testing required to evaluate the effect of pigmentation changes made in approved topcoat technologies. Pigmentation changes may be made for model year "Annual Color Programs" or for processing improvements.

The intent of this test procedure is to ensure that new colors in previously approved topcoat technologies meet all the performance requirements defined in the Exterior Topcoat Material Specification (GM4367M). Typical performance requirements include up to 5 or more years of outdoor (Florida) exposure and durability testing.