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HiCustomer The pass lock system on your car is a class 2 device and if the following procedure does not cure your problem, it will be necessary to have it connected to a class 2 scanner like the dealers use to clear they system and re set it. Good luck and let me know how it goes. This is right out of the GM service manual. Thanks, Bob
Time required, approximately 10 minutes.
The BCM and the PCM will learn the new code on the next start attempt.