GMW GMW15357 PDF

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose. The purpose of the rating scale is to allow comparison between vehicles and consistency between personnel. It is important to recognize that rating corrosion involves perception of an objectionable surface and much of the judgment is subjective. In developing the corrosion scales, General Motors has tried to provide an objective measure that will guide subjective judgment.

Applicability. This Component Guideline contains Underbody, Underhood, Interior, and Secondary Surface.

Remarks. The Corrosion Rating Scale Guidelines contain corrosion rating scales, rating guidelines, and photographs for the determination of corrosion severity on all vehicular parts, including body and sheet metal, underbody and underhood components, and fasteners. It is intended that the scales are used for both corporate corrosion inspections and field surveys.