The transmitter (or maybe truck receiver) on the keychain of my 2000 GMC Sierra to lock/unlock the doors suddenly stopped working. I replaced the button battery, but it didn't help. Neither the lock nor the unlock doors functions work, but the horn blow function does work using the transmitter. The door lock/unlock functions do work if operated from the rocker switches on the door panels. Where should I look first to fix this problem ?
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Keyless entry not working
- Thread starter Bill325
- Start date
Molson02536
New member
The transmitter (or maybe truck receiver) on the keychain of my 2000 GMC Sierra to lock/unlock the doors suddenly stopped working. I replaced the button battery, but it didn't help. Neither the lock nor the unlock doors functions work, but the horn blow function does work using the transmitter. The door lock/unlock functions do work if operated from the rocker switches on the door panels. Where should I look first to fix this problem ?
Try this, it's the reprogram procedure. If you have the battery out of the remote too long the resync procedure won't work, and you will have to re-program the remote.
All transmitters which are to be recognized by the PDM must be programmed in a single programming sequence. When using this program method, all previously programmed transmitters will be erased upon the receipt of the programming signal from the first transmitter.
The order in which the transmitters are programmed will determine its numbering position within the PDM memory. The first transmitter programmed will be transmitter #1, and the second transmitter programmed will be transmitter #2. The number stamped on the transmitter case is for reference only: #2 can be programmed as #1, or vice versa. Additional unnumbered transmitters are also available.
1. Close all the vehicle doors.
2. Insert the ignition key into the ignition lock cylinder.
3. Press and hold the door unlock switch.
4. While holding the door lock switch in the unlock position, cycle the ignition ON, OFF, ON, OFF.
5. Release the door unlock switch. The doors will lock and unlock to confirm the program mode.
6. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a delay of approximately 15 seconds, the doors will lock and unlock to confirm the programming of that transmitter.
7. Repeat the previous step to program up to four transmitters.
8. Turn the ignition switch to the RUN position in order to exit the keyless entry transmitter programming mode.
9. Operate the transmitter functions in order to verify correct system operation.
Molson02536