the other day when I shut the truck off the locks locked. Since then the remotes have not worked. The manual door lock buttons work fine. It even locks with you put it in to drive and unlocks with selecting park. Only the Key-less remotes is not working. I have tried the procedure holding the unlock down, cycling the ignition 2 times and then holding the 2 buttons on the remote but that procedure does not work. How can I tell if the problem is the receiver and not the transmitter (key-less remote)?

 

Have you tested battery, i know stupid questions but mine was doing something similar and didnt think it was the batt cuz it just stopped with no warning one day ... did like you and still nothing ... just so happened to have a spare batt my console and thought why not cant hurt its already here ... and what do you know it worked ... might not be your problem .. but if it doesnt have enough juice its not gana work

 

def battery