For 1990-2009 cars

### Synchronization

Synchronization may be necessary due to the security method used by this system. The transmitter does not send the same signal twice. The body control module (BCM) will not execute a signal if it has been sent previously. This eliminates the possibility of the signal being recorded and played back.

Important: If the transmitter won't work, perform the RKE System Check before manually synchronizing the transmitter.

The BCM has an automatic synchronization feature, where the system will perform this on its own. In some cases a manual synchronization may need to be performed.

To manually synchronize a transmitter with a BCM, simultaneously press and hold the LOCK and UNLOCK buttons on the transmitter, for approximately 10 seconds, near your Saturn. The door locks will cycle to confirm synchronization.

Important: If the transmitter is programmed to more than one Saturn, each Saturn must be within transmitter range during synchronization. Otherwise, the transmitter will not work for the Saturn that is out of range.

### Programming Transmitters

Each transmitter is coded to prevent another transmitter from activating the RKE functions on another Saturn, as long as that particular transmitter has not been specifically programmed to that Saturn.

A transmitter can be programmed to as many different Saturns as a customer owns, as long as they have the power door lock option. Each Saturn can be programmed with up to four transmitters.

To program transmitters, refer to Tech 2 User Guide for information on using the program key fobs special function.

To program customer options, refer to RKE Customer Programmable Content Theft Programming.