2001 gmc safari. door will unlock with the fob but not the switch. that is all doors. also the cigarette lighter closes to the drive doesn't work. Check fuse good. Where is the door lock relay.

SOURCE: 2000 Safari, power locks,Rear dutch door wont unlock,

can you use the key its self on the rear door. what i mean is not using the remote but actually using the key?

SOURCE: Power Door Lock Problem

The last post by maddog1321 was exactly what I had with my right rear door. The electric locks would not lock and unlock, and you almost couldn't do it manually without my feeling I was about to break something. I took the door panel off, oiled everything and got no relief. Finally, I saw the above post and drilled out the aft-most pop-rivet. THE WINDOW WORKED PERFECTLY! I didn't drill out the forward (closest to the handle) pop-rivet because I wanted to do one at a time so the solenoid would not fall out of place. I then put a new pop-rivet in place of the one I drilled out. I then reinstalled everything and the locks work like new.

SOURCE: Automatic door locks / 2001 Chevy Suburban

Your book should give you program options for the door locks If your fob wont work either you got a relay for the door lock bad it is located in the fuse panel push the door lock button and find the one that is clicking

SOURCE: 2002 Dodge Grand Caravan Driver Door Lock/Unlock Switch

sorry not sure the 12v prob will help this swtich works on 5v off 3v unlock 1v lock single wire lock/unlock logic signals
I found wiring diagrams at
http://www.dodge.com/bodybuilder/2004/docs/wd/rswd/tc.pdf
it is 2004 but use the wiring diagrams to test the wires
(most likely to fail where they flex)
because it is using logic gates disconnect the plug at each end of the wire you are testing or the damn thing will find a few diffrent ways to trick you.

PAUL MC G

• 1280 Answers
• Posted on Sep 23, 2009

SOURCE: 2004 Hyundai Sonata door lock functions inoperable.

you have a bad relay.. the 'lock' relay.