The Lock button should lock all exterior doors.
If not then there is a problem with a component, and reprogramming the transmitter will probably not help.
Here is an Exerpt from repair manual,
The procedure is all jumbled up because the copy and paste does not keep everything in order.. sorry
Door Lock Inoperative with Transmitter - All
Step
Action
Value(s)
Yes
No
DEFINITION: This diagnostic procedure should only be used if the power doors lock with the power door lock switches and are inoperative with a keyless entry transmission.
1
Did you perform the Remote Keyless Entry System Check?
--
Go to Step 2
Go to Remote Keyless Entry System Check
2
Disconnect the remote control door lock receiver connector.
Connect a test lamp between cavity R and ground.
Press the LF door lock switch to the lock position.
Does the test lamp light?
--
Go to Step 3
Go to Step 4
3
Replace the remote control door lock receiver. Refer to Remote Control Door Lock Receiver Replacement .
Is the repair complete?
--
Go to Remote Keyless Entry System Check
--
4
Repair the open in CKT 195 (LT BLU) between the remote control door lock receiver and S261. Refer to Wiring Repairs in Wiring Systems.
Is the repair complete?
--
Go to Remote Keyless Entry System Check
--
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