My drivers door lock has decided to only work part of the time. I hope the info below makes sense about what it's doing.

-Manually with the key, it's fine....still triggers the other doors to lock/unlock

-Sometimes it works just fine...autolock when in gear/remote/button all work when it's cooperating.

-Sometimes it has no power function...neither remote or dash button will work (only on the drivers door, others all work fine with either all the time)

-When it's not working, the super lock function WILL lock/unlock that door.

Anyone ever had an issue like this? Any easy test that can be done to start ruling out what the issue is? Or any ideas on what I'm going to have replace soon?