GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
Unfortunately on the newer models like this here starting around 1999 the radios had to be calibrated by a dealer.It no longer works to do the button press to unlock it.The dealer has to plug in their scan tool which will then be connected to their computer to download the programming into the radio to match the VIN in the vehicle it is installed in for it to work.I wish I had better news on this here but this is the only way this can be done.A dealer will charge anywhere from a half hour to an hours labor to do this.
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