GM Truck Club Forum banner

1 - 2 of 2 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter #1
I have an '87 GMC R2500 Suburban with some fun power lock issues. The front two doors are fine, they lock and unlock normally. The rear-seat doors don't do either, and the barn doors lock but don't unlock. I'm hoping to get this fixed before too much longer since its getting annoying! I haven't ripped things too far apart to check yet since it looks like it may be quite 'fun' to do, so I wanted to ask opinions first on possible causes. Thanks in advance!
 

·
Premium Member
Joined
·
1,625 Posts
Could be a short or just a loose wire.

Check fuses but I don’t think that’s it.

To check the wires you need to take the door pads off, I wrote a thread on how to do that a while ago.

Then just use a test light to check the wires for power, if I remember right they just change polarity. Positive on one side to lock and then + on the other side to unlock.
 
1 - 2 of 2 Posts
Top