1996-97 Cadillac
Remote Keyless Entry System (RKE)

Note: Before starting this procedure, both transmitters must be present. For programming purposes, procedure questions will be answered with a YES or NO response. FAN UP is YES. FAN DOWN is NO.

1. With the ignition in the "RUN" position (engine does not necessarily need to be running, but it will work either way).
2. Press OFF and WARMER (or the OFF and PASSENGER WARMER buttons) on climate control panel simultaneously. Instrument Panel Cluster (IPC) will light all telltales, then go blank. System is now in DIAGNOSTIC MODE. After diagnostic mode cycles through and stops, press FAN DOWN button until "RFA?" is displayed, then press FAN UP. If "RFA DATA?" is displayed, press FAN DOWN. If "RFA OVERRIDE?" is displayed press FAN UP button.
   
3. If "RFA S00 NO OVERRIDE" is displayed, press FAN DOWN. If "RFA S01 PROGRAM FOB #1" is displayed, press FAN UP button.
   
4. IPC will show "0" on right side of Drivers Information Center (DIC) display. Press WARMER button on the climate control unit until "99" is displayed.
   
5. Press and hold TRUNK button on the transmitter. While holding TRUNK button, press LOCK button and hold both buttons for a total of 3 seconds. Locks will cycle when programming is complete. If transmitter is not programmed within 30 seconds after entering "99" on the display, system will default and you must begin at step #2 again.
6. To program second transmitter, press FAN DOWN button until "RF S02 PROGRAM FOB #2" is displayed, then press FAN UP. Repeat step #4.
   
7. To exit system, press AUTO, MODE UP, MODE DOWN, or RESET button.
   

1. With the ignition in the "RUN" position (engine does not necessarily need to be running, but it will work either way).
2. Press OFF and WARMER (or the OFF and PASSENGER WARMER buttons) on climate control panel simultaneously. Instrument Panel Cluster (IPC) will light all telltales, then go blank. System is now in DIAGNOSTIC MODE. Press FAN DOWN button until "RFA?" is displayed, then press FAN UP. Press FAN DOWN button until "RFA OVERRIDE?" is displayed, then press FAN UP button. When "NO OVRD RF S00" is displayed, press FAN UP button.
   
3. When "PGM FOB1 S01" is displayed, press WARMER button and "99" will be displayed in the left upper corner of the IPC, just below odometer. System is now ready to program transmitter.
   
4. Press and hold TRUNK button on the transmitter. While holding TRUNK button, press LOCK button and hold for one second. Hold both buttons for a total of 3 seconds. Locks will cycle when programming is complete. If transmitter is not programmed within 30 seconds after entering "99" on the display, system will default and you must begin at step #2 again.
   
5. To program second transmitter, press FAN UP button until "PGM FOB2 S02" is displayed, then repeat steps #2 and #3.
   
6. To exit system, press RECIRC, or RESET button.
   

To synchronize transmitters after battery replacement, press and hold LOCK and UNLOCK buttons simultaneously. Lights will flash and horn will cycle, then synchronization will be complete.

If you suspect the key fob itself isn’t working, the dealership's parts department has a device that will check to see if it is indeed functioning properly - if you have a frequency counter you can check it as well, to see if it is indeed transmitting - output is in the 318-320 MHz range. The couple that I've check have been 318.989 & 319.076 MHz - note that no matter which button you press (light, unlock, lock, trunk open, etc.) the transmit frequency does not change.

If they're still not working (after installing fresh batteries) and you feel like messing around with it a little, take the key fob totally apart and clean the contact points behind the rubber membrane and the brass etchings on printed-circuit (PC) board - this may be just enough to bring it back to life! Moisture intrusion and the resulting corrosion on the contacts is usually the culprit in a lot of "not working" situations.

RKE Key Fobs (remotes) part numbers. FYI - Most dealerships keep an assortment of these in stock, as they are a fairly common and inexpensive replacement item.

The #1 and #2 remotes look identical - the only difference is the number on the back, which determines the order that they are programmed.

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Please note that this document is provided for information purposes only: there is no warranty expressed or implied about what they will do to your car, factory warranty, performance, or value of your car. Use them at your own risk.

I have tried to format the information into more of a "how-to" type guide. My apologies for any errors I introduced in this process.