Programming Instructions:
Note: This is the same for many GM vehicles.
Sit in the driver’s seat. Insert the key into the ignition but don’t turn it. Push and hold the “Lock” button on the door. Continue to hold it. Turn the key to on, off, and then back to on, rapidly. Release the “Lock” button. The doors will sound. The remote is ready to be programmed. Push and hold “Unlock” and “Lock” on the remote for 20 seconds. The remote is programmed to the vehicle.
Justin says
Hello I am trying to get help on programming my keyless entry transmitter on my 2005 GMC Sierra but there is a problem. Everytime I hold the unlock button and cycle the ignition ON, OFF, ON, OFF… The truck enters programming mode like so in the instructions, but right after it does the the truck locks and unlocks once more and my truck horn beeps 2 times. I’ve tried to get help with this but no one has told me anything helpful. I’ve seen you tube videos to make sure I was doing it right and also tried resetting my battery but the same result. Any idea why or what is preventing it from going into programming mode? If that’s even the problem.
Cameron Ingersoll says
It is “on, off, on” not “on, off, on, off”.