TechnicianVision · Knowledge base
General Motors: Overlap Joint Procedure In Body Repair Manual
I-CAR · October 15, 2019 · General Motors, Chevrolet, GMC, Buick, Cadillac
Summary
General Motors has established a specific 'Overlap/Backing Plate Sectioning' procedure in its Body Repair Manuals (BRM) detailing how to prepare, measure, drill, and weld overlap joints. If this dedicated procedure is not present in the BRM for a specific vehicle, the step-by-step overlap instructions will be embedded directly within the individual panel replacement procedure.
What to do on the job
Locate and follow the specific 'Overlap/Backing Plate Sectioning' procedure in the BRM, or follow the embedded step-by-step instructions within the panel replacement procedure to ensure correct overlap measurements, plug weld hole drilling, and welding.
How to use it
Use this document to justify the labor time and specific steps required for preparing, measuring, drilling, and welding overlap joints on GM vehicles. If an insurer questions the methodology or time required for sectioning, reference this document to prove that GM mandates a highly specific, multi-step overlap/backing plate procedure that must be followed exactly as outlined in the BRM.
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