TechnicianVision · Knowledge base
Weld-Through Primer Guidelines: General Motors - UPDATE
I-CAR · May 2, 2025 · General Motors, Chevrolet, GMC, Buick, Cadillac
Summary
This article outlines General Motors' guidelines for using weld-through primers during collision repairs, emphasizing that they must be applied to mating surfaces but removed from the direct weld zone prior to GMA welding. It directs technicians to vehicle-specific Body Repair Manuals (BRMs) to locate approved products and specific application procedures.
What to do on the job
Apply GM-approved weld-through primer (such as 3M 05917, Transtar 4353, or equivalent) to all mating surfaces, ensuring it is removed from the direct weld zone before performing GMA welding.
How to use it
Use this document to justify the labor and material costs for weld-through primer application during panel replacement. It proves that GM requires approved anti-corrosion coatings on mating surfaces and provides the specific BRM pathways to locate these requirements for estimate documentation.
This page is a summary written by TechnicianVision. The document itself belongs to its publisher — follow the link above to read it in full.
TechnicianVision puts procedures like this next to the repair order you are working on. Create a free account →