This is a correct procedure to program. If it doesn't work then there are other problems in the system.mateito said:No, I bought the Terrain used.
First, you can put the key programed in the ignition and turn to on position, but dont turn on the car. All lights turn on the DIC and you must wait until the security light turn off. Then remove the key and insert the new key and wait until the security light turn off. Now, test the function.