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Re: GM passkey III won't relearn to new TDM
Posted to Technical Discussion Forum on 5/15/2017

Scott is correct, have seen this many times. I don't keep track of the various flavors of PK3, but when a TDM key learn fights me I just cut a new one. It seems that OE keys are more likely to re-learn to a new TDM than aftermarket keys also. Login to read more.