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International Automotive Technicians Network
Re: Is there a good way to check Cal IDs on GM cars
Posted to Technical Discussion Forum on 3/8/2018

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Here's what I have always recommended to shops/techs...

1) Look the vehicle/controller up on the GM Cal ID page (previously linked) by VIN and module. 2) Click the "Complete History" button. 3) Pri... Login to read more.