GMW GMW15518 PDF

Material Description. The requirements listed in this specification must be met by all interior paint systems used in all GM vehicle interiors. Paint systems must follow the steps in Figure 1 to complete the paint approval process of a part.

Symbols. 

Paint Haptics. For a paint material approval, the paint system is required to be listed as approved in the GM Materials File (MATSPC) system. Paint systems approved to this specification shall be required to carry a type suffix to indicate the haptic feel that it has to the human skin. The suffix system shall be:

Type C: Hard Touch

Type D: Semi-soft Touch

Type F: Satin Touch per GMHM012 Master

Type M: Metallic

Type F haptic feel must be approved by the GM Design Quality Paint Development Lead prior to evaluating the paint system performance. Paint types with an assigned GM haptic master shall have all paint system performance testing (Table 1, Column 1) reviewed by the region that originated the haptic master prior to MATSPC approval. After the system approval, color approvals are approved by any GM region. 

Basecoat/Clearcoat (BC) Applications. Basecoat plus clearcoat systems approved to this specification shall be approved with the symbol (BC) following the haptic suffix.

Applicability. This specification covers requirements for an interior, waterborne or solventborne, one (1) or two (2) component paint system for use on parts made of paintable polyamides. All substrates must be tested per GMW16172 to confirm paintability. 

Remarks. Polyamide substrates can be pretreated by using a primer. All new colors must be evaluated per Table 1, Column 2.