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Re: 01 GMC C1500 B1001 after installing new SDM
Posted to Technical Discussion Forum on 12/22/2002 1 Reply

Daniel is correct. The Autolearn procedure will not function for one simple reason; The system is not in tamper mode. The Autolearn procedure requires a system that has previously entered tamper mode. The only way to relearn your Passlock II system in its curr... Login to read more.

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