It is not the actuators, try a different remote, you may have an issue with the car security system/body computer not functioning on the unlock driver door command, one press of remote is unlock driver door and 2 presses is unlock the other doors.
check the wires in the rubber boot between the door pillar and the door for a break in the wire or loose plug socket ,check for a feed to the lock with a multimeter as well whilst operating the system as i think this is your problem here -no power
SOURCE: Chevy Impala Door lock issue
Which is it, 98 Eclipse, or 06 Impala? Either way, your door lock actuator is stuck in the locked position either electrically or mechaically. The way to check this is to remove the door panel and unplug the actuator. If door lock can now be moved then you have an electrical problem (faulty door lock switch or faulty door lock module). If you still cannot unlock door then actuator is mechanically bad and must be replace (usually the case)
SOURCE: 1998 Toyota Corolla Electric Door Lock Problem
You'll need to replace the solenoid (motor) that doesn't work. Not hard once you get the door panel off. I suggest you buy the correct part, not a universal one.
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i want to add that power button on driver door is working fine. i can lock and unlock all doors from driver side door switch which also confirm that door actuator is not weak or faulty.
It's so strange that the remote will unlock all of the other doors when one was unlocked with the key. I'm having a similar problem with my Subaru, but I can't open the door with the key. I'm not sure if you've fixed it, but it might be a good idea for us both to find a locksmith to see if he can fix it. http://www.kwikkeys.com/about
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