Okay, so heres the deal my power door locks seem to work fine except the drivers side door wont unlock with the remote or the door switches I have to use the key to unlock it. It will lock just fine with the remote and the switch. The passenger side door unlocks and locks with both switch and remote. I bought a drivers side door lock actuator off of stephen and plugged it in to test and make sure that was the problem before I went through the hell of replacing it. Well it didnt unlock either and I doubt they are both bad. So my question is where should I look for the issue? Would my aftermarket alarm be the issue? It was in the car when I got it and I did check out all the wiring and it appears to be fine (I got a wiring diagram for that alarm off the internet) Would a faulty relay cause just the drivers door to not unlock or is it most likely faulty wiring somewhere? Any ideas are welcome.

Check the door lock switch that is on the back of the lock tumbler. Use an ohm-meter to see it makes and break contacts as you turn the lock cylinder.

Terry

I havent ever seen one without those switches. I know i left one unplugged on mine and it caused issues.

Hm. Well I guess ill get myself a couple of those and see if that works.

Terry, are you talking about the little circular things on the back of the locks?

If so I did not put mine on when I converted to power options.

Mine work fine, including locking both sides if I manually lock the drivers door while pass is unlocked. It wont lock with door open and keys in ignition either

Mine seem to work fine, so maybe a certain year had to have those circle sensors

OH, your dealing with an aftermarket alarm? I thought you were talking about the factory one the dealer could install.

In that case Tux, you are correct. aftermarket alarms require an actual relay assy to trigger the correct wires due to our solid state circuitry. Def take it to a aftermarket shop otherwise you are going to be chasing your tail on it.