The driver side lock can only be locked manually. Neither the keyless or nor the lock/unlock button will work. Any ideas on whats going on?

 

Does the lock actuator get power and ground?

 

I actually have not dug into it yet, I was seeing if there were any "usual supspects" for this particular problem. But its funny that you brought up power and ground, because the keyless worked ONCE yesterday. I am not a certified tech but have turned wrenches my whole life is it something a pro should do or is it simple enough to proceed.

 

it's easy.... the hardest part is figuring out exactly how the door panel is removed... from there it's just a matter of testing with a volt meter.... I'm sure if you've been turning wrenchs for a while that you can figure it out