Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISTESTING AND INSPECTIONREMOTE KEYLESS ENTRY (RKE) - TRANSMITTER - RESYNCHRONIZATION
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Remote Keyless Entry (RKE) - Transmitter - Resynchronization
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Remote Keyless Entry (RKE) - Transmitter - Resynchronization
The security method used by the Remote Keyless Entry (RKE) system may occasionally make it necessary for 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 recarding 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.
^ 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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.