Greetings and Welcome to Just answer.
Does the remote entry still work?
OK, the common like for these is the Body Control Module. This is under the passengers side of the dash. It could be wiring, grounds, a fuse or the module itself.
The first thing is the fuses and a good visual inspection.
This is under the right side of the dash.
At the top of the schematic are all the fuses for the BCM.
THe RAP would not control the door locks, that is for the windows. IT is located beside the BCM. Just be sure to check ALL the fuses. WIth the computers, it is hard to know if one that may not seem like it should do it, actually causes it.
Using a scan tool to communicate with it is one way. And 125 is cheap for a module. It will need to be reprogrammed too.
Not a DO IT YOURSELF programming, sorry.