GM: Applying Impact Resistant Structural Adhesives

I-CAR · September 12, 2018 · Chevrolet, GMC, Buick, Cadillac

Summary

This article outlines General Motors' requirements for using impact-resistant (I.R.) structural adhesives during collision repairs. It emphasizes that I.R. structural adhesives must always be used (except on door skins) and must be paired with a mechanical fastener such as spot welds, rivets, or screws.

What to do on the job

Always use impact-resistant structural adhesives for structural repairs (except door skins) and ensure they are paired with a mechanical bond like spot welds, rivets, or screws.

How to use it

Use this document to justify the necessity and cost of OEM-specified impact-resistant structural adhesives on GM vehicles. It also serves as authority to deny the use of GMA plug welds in adhesive-bonded areas, proving that GM requires specific mechanical fasteners like squeeze-type resistance spot welding (STRSW), rivets, or screws instead.

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