2002 cavalier, remote start

Ok, I am getting power to the actuator on lock and unlock, so it's clearly dead.  As far as changing the actuator, where is the best place to get them, I checked some parts stores and they are $50-60 which seems really high.  Is a junk yard a good place for these?  Also, as far as changing it, it appears I have to remove the whole latch mechanism to get to it, is this correct?

Thanks again for everybody's help.

That sounds like a good route.  I have seen aftermarket ones for $5-10.  I assume you are talking about mounting it somewhere easier to get to?  Is there any special kind I should be looking for, and do they come with instructions?

Thanks again for your help ckeeler.  You have been most helpfull.

A couple weeks ago I installed a remote start on a 2002 cavalier.  I used a 555L bypass module.  Everything seems to work perfect most of the time.  However, every once in a while the car will not remote start.  It fires up and runs for about 2 seconds and shuts off.  It doesn't happen very often.  Most of the time it starts fine and stays running.  And if I use the key to start it and then remote start it works fine.  And once in a while it will remote start fine and stay running and when I get to the car the anti-theft light is on in the dash.  It runs fine but the light will stay on until I turn the car off.  Again, both these issues are very random, I stress most of the time it works fine. 

I am not sure if the bypass module is defaulty or if I possibly didn't get the exact right one for my car?  Possibly a loose wire?  I did double check all my connections.  Any ideas?  I'm kinda stumped here.  Keep in mind this is my first install so I may have missed something. 

Thanks in advance for any and all help.