power door locks

i have read some of the threads about replacing door actuater but can anyone tell me how to verify its the actuater. my doors lock but all 3 passenger doors will not power unlock. is it the actuater or something else?

If they all didn't work, I'd say it could be a power window switch, but if it's just the one, it very well could be the actuator. I know it's not that much help, but I thought I'd at least say that much.

I had a problem with my key fob only able to unlock the drivers door. So I started using the spare fob and it works fine. Also check out the thread "key fob programming", last edited on 9-28-04, it explains how to set up a key fob for your vehicle so I don't think they come factory programmed.

what is fob?