- 1). Enter your GMC vehicle with your keyless remote and ignition key in hand. Be sure to close all of the doors and trunk behind you.
- 2). Insert your key into the ignition and hold down the unlock tab on the driver's side door. Be prepared to hold the tab through the following steps.
- 3). Cycle your key in the ignition to the "On" position and back to the "Off" position twice in a row.
- 4). Release the unlock tab after the second cycle with your ignition key and wait for the car to indicate the programming mode by cycling its locks.
- 5). Press and hold both the unlock and lock buttons on your remote until the locks again respond by cycling.
- 6). Repeat step five with any additional remotes that you wish to program, waiting for the lock cycle each time.
- 7). Turn the key in the ignition back to the "On" position to end the programming sequence. You will now be free to use your keyless entry remotes with your GMC as desired.
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