I have a 4 door 2.2L Saturn L200. Recently the power lock button on the car doors stopped working. It appears to be something with the power lock circuit relative to the power lock buttons. All power lock buttons are non-functional, but all power locks are functional when car is in gear (the doors auto-lock), and when the car is turned off and pulling out the ignition key.
I don't know where to look to check the wiring/switching for the power lock buttons (assuming that is the problem.) I have not reset the BCM yet (which was an idea posed to someone with a slightly similar problem.