- 1). Get in your vehicle and shut all the doors. Put your key in the ignition switch and hold down the "Unlock" button on your door panel.
- 2). Examine your ignition area closely. There are key settings besides cranking the engine: "off," "on" and "acc." Quickly toggle the key between "off" and "on" twice with the door unlock button held down.
- 3). Release the "unlock" button and listen for the doors to lock and unlock. This signals you are in programming mode.
- 4). Hold down the "lock" and "unlock" button on the keyless remote to program it to the vehicle. Wait for the doors to lock and unlock again to signal that the programming is complete.
- 5). Repeat the procedure to program a total of four remotes to your GM vehicle.
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