Help re: 2003 Impala with power door locks.
The door lock power button will not lock/unlock the doors. Then when it is warm out, they will work fine. Sometimes you move the gear shift and the door locks don't work again. The dealer says everything is fine - didn't catch the dealer on the day the locks weren't working ?!? The dealer suggested to replace the engine computer but no guarantee that would fix the problem.
Any ideas on what to check - where to start looking?