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Keyless Entry Transmitter Programming


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Found this on the FSC Forum and thought to let everyone know just in case.



Transmitter Programming '03 silverado:



Do not operate or program the transmitters in the vicinity of other vehicles

that are in the keyless entry program mode.

This prevents the programming of the transmitters to the incorrect vehicle.


There are 3 methods for programming transmitters which are listed below

as method 1-3. Up to four transmitters may be programmed to the

passenger door module (PDM). Each programmed transmitter is given

a position of #1-#4 in the PDM memory.


Method 1 - No Tools Required, Program All Transmitters



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.

Close all the vehicle doors.

Insert the ignition key into the ignition lock cylinder.

Press and hold the door unlock switch.

While holding the door lock switch in the unlock position, cycle the

ignition ON, OFF, ON, OFF.

Release the door unlock switch. The doors will lock and unlock to

confirm the program mode.

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.

Repeat the previous step to program up to four transmitters.

Turn the ignition switch to the RUN position in order to exit the keyless

entry transmitter programming mode.

Operate the transmitter functions in order to verify correct system


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