1997 Riviera

1. Insert keys in ignition and leave in the OFF position.
2. Locate the OBDII Port.
3. Make sure there are metal contact pins in terminals 8 and 4. Connect 8 and 4 with a suitable jumper wire (leave the jumper wire connected throughout the programming procedure). Make sure you know which terminals are 8 and 4. The vehicle will respond by locking then unlocking the doors to signify entering of programming mode.
4. Turn ignition to the ON position (as far as you can go without cranking the engine).
5. Press and hold both the LOCK and UNLOCK buttons together on the first transmitter to be programmed. Up to about 30 seconds, the vehicle will respond by locking then unlocking the doors. Release the buttons on the transmitter.
6. Within one minute, repeat the previous step on the remaining transmitter (if any – including any existing remotes).
7. Remove jumper wire applied to the OBDII Port.