Structural damage caused by accidents will require vehicle repairs before the car is road-ready again. This may mean that the anti-corrosion coating and other materials may have to be removed to repair the damage. Once that area is repaired, the next step is to replace the coating. It is important to understand the difference in coatings and the parts they are approved for use on.
There are two categories of anti-corrosion coating: the closed cavity coatings and the undercoat coatings. These two coatings behave differently, designed to cover specific areas of the car to prevent rust and corrosion from setting in on the replaced parts. According to the GM Approved Refinish Materials booklet, there are a specific number of suppliers that provide acceptable coating materials. These materials are generally applied to areas that are at great risk of deterioration without them, such as rocker panel sections, cross-members and frame rails.
Closed Cavity Coatings for GM Parts:
- Remains sticky after application
- Runs or seeps into seams, even over a period of time
- Used mainly for pillar sections, rocker panel sections, doors, frame rails, areas of the hood, cross-members and rear compartment lids
- Any other areas that are obscured from the exterior
- Helps deaden sound
Undercoat Coatings for GM Parts:
- Completely dries after application; no sticky residue after drying
- Used mainly for wheelhouses, underhood areas, floor pans, inside rear compartments
- Any other areas that expose the exterior
- Helps with sound deadening
If you are in search of a reliable provider for the right GM parts, buy from GM Outlet Parts. We offer a wide, full range of parts with prompt, courteous service. Contact GM Outlet Parts with questions on part selection and availability, or call our sales department at 1-866-702-4024. Competitive pricing and trained sales representatives make GM Outlet Parts the right choice.
http://www.genuinegmparts.com/pdf/techInfo/Anti-Corrosion_Treatment_and_Repair.pdf
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