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Home >> Chevrolet >> 1998 >> Astro Van 2WD V6-4.3L VIN W >> Repair and Diagnosis >> Body and Frame >> Locks >> Keyless Entry >> Keyless Entry Transmitter >> Service and Repair >> Transmitter Synchronization
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Transmitter Synchronization

The security method used by the Remote Keyless Entry (RKE) system may occasionally require you to resynchronize the system. The RKE transmitter does not send the same signal twice to the receiver, because the receiver does not respond to a signal more than once. This prevents anyone from recording and playing back the transmitter signal.

Resynchronization will be necessary if any of the following condition apply:
^ When the transmitter battery is very weak.
^ When you replace the battery.
^ When the vehicle battery is very weak.
^ When you replace the vehicle battery.
^ When you disconnect the vehicle battery.

Resynchronize the transmitter with the receiver as follows:
^ While standing close to the vehicle, simultaneously press and hold the LOCK and UNLOCK buttons on the transmitter for 7 seconds.
^ The door locks should cycle in order to confirm synchronization.