Question about 2003 Buick Regal
I have a 2001 Buick Regal. The driver's side door power lock switch will not lock the door. The switch will unlock the door. The keyless remote also works with locking and unlocking the door. The passenger side power door lock will also lock and unlock the doors. I tried replacing the Power lock swith on the driver's side door, but everything works the same, no change. Any good advice?
Remove the door panel and unplug the connector to the door actuator. Probe the contacts with a voltmeter set on DC volts. Then operate the lock/unlock switch. You should see the voltage toggle from +12 volts to -12 volts. If you do, then the wiring, switch and connector are good and you have a bad actuator. Be prepared to start replacing all of them because they all operate the same number of cycles.
Posted on Jul 28, 2017
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Posted on Jan 02, 2017
The only way to really see the problem is by removing the door trim panel. This will allow you to see if is the actuator is moving, and how far, along with noting any interference of lock linkage movement. Hope this helps.
Posted on Apr 27, 2009
did you try changing the master switch(controls all windows and locks)? i would hook it back up to the way it was and change that master switch
Posted on Dec 06, 2009
SOURCE: buick 2002 LaSabre Custom all windows do not go up and down, door lock/unlock switch drivers side does not work(passenger & rear doors lock/unlock door switches work, trunk release button does n
coulb be the control switch on your panel you can take the door panel off and check for loose connections and try to test for continuity. if you dont know how take it to a shop and have them diagnose the electrical. im quite sure it the switch that burnt out
Posted on Oct 24, 2012
Tips for a great answer:
The driver door module (DDM)
The passenger door module (PDM)
The rear door module (RDM)
The LH front power door lock switch
The RH front power door lock switch
The LH front door lock actuator
The RH front door lock actuator
The LH rear door lock actuator
The RH rear door lock actuator
The remote control door lock receiver (RCDLR)
The power door serial data circuit
The class 2 serial data circuit
The DRVMDL Fuse - 10 amp
The PDM Fuse - 10 amp
The RRINMDL Fuse - 10 a
Class 2 and Power Door Serial Data Links
The class 2 and power door data circuits are both serial data links. The serial data circuits replace cables in the vehicle by multiplexing (time-sharing) data to and from each device over a single wire referenced to ground. If the power door serial data is lost, both the rear door module (RDM) and the passenger door module (PDM) enters the sleep mode. With the RDM and the PDM in sleep mode, no power door operations are possible.
Your best bet is to take it to the dealer or an ASE certified repair shop .
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