TechnicianVision · Knowledge base
Refinishing Park Assist Sensors: GM
I-CAR · July 21, 2020 · General Motors, Chevrolet, GMC, Buick, Cadillac
Summary
This article outlines General Motors' guidelines for refinishing park assist sensors, highlighting that previously painted sensors must not be refinished due to the risk of excess paint buildup causing system failure. It notes that new sensors are supplied ready for paint and must be refinished following specific OEM guidelines regarding preparation, masking, and mil thickness.
What to do on the job
Never refinish a previously painted GM park assist sensor; replace it and paint a new sensor instead, strictly adhering to GM's mil thickness and masking guidelines.
How to use it
Use this document to justify the replacement (rather than refinishing) of any damaged, previously painted park assist sensors on GM vehicles. It serves as official documentation that excess paint buildup will cause the sensor to become inoperative, supporting the necessity of new sensor replacement and precise refinishing procedures on estimates and supplements.
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