How to Program a 2003 GMC Remote
- 1). Enter your car, close all of the doors and insert your key into the ignition.
- 2). Hold the Unlock tab on your door and cycle the key to "On" and then back to "Off" twice in quick succession.
- 3). Release the Unlock tab and wait for the locks to cycle.
- 4). Press and hold the Lock and Unlock buttons on your remote until the locks cycle again. This may take up to 30 seconds.
- 5). Release the button and turn the car's ignition to the "On" position to end the programming sequence.
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