GrandPrix, Impala 2006-2008, Monte Carlo 2006-2007

Locks & Lock Systems

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Power Door Locks



Diagnosis & Testing

A short to ground in any door lock or unlock control circuit will most likely open the 15-amp DR LK/TRUNK fuse located in the instrument panel (I/P) fuse block and cause all door lock functions to become inoperative. However, if the lock or unlock control circuit is shorted to ground and the DR LK/TRUNK fuse does not open, the most likely affect will be that all door locks will be inoperative in one direction, i.e. if the unlock control circuit is shorted to ground, all doors may lock, but will not unlock, or, if the lock control circuit is shorted to ground, all doors may unlock, but will not lock.

Inspect for aftermarket devices which could affect the operation of the system. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. Faulty electrical connections or wiring may be the cause of intermittent conditions.

Removal & Installation
Door Lock Motor
  1. Remove the door trim panel.
  2.  
  3. Remove the door water deflector.
  4.  
  5. Open the outside handle rod to lock clip located on the door lock. The outside handle rods should be loose from the lock.
  6.  
  7. Remove the lock cylinder rod from the outside door handle.
  8.  
  9. Remove the inside door handle.
  10.  
  11. Remove the screws from door lock.
  12.  
  13. Remove the door lock and rods through the access hole in the door inner panel.

    Click image to see an enlarged view

    Fig. Disconnecting electrical connector (2) from the lock and removing the rods from the door lock

  14.  
  15. Disconnect the electrical connector from the lock by pulling out on the tab.
  16.  
  17. Remove the rods from the door lock.
  18.  
  19. Reverse removal procedure.
    CAUTION
    The outside handles have adjustable outside handle lock rods. This allows for adjustment of the amount of travel needed in order to operate the outside handle. When servicing a vehicle with adjustable outside handle lock rods, remove all free play between the outside handle and the lock. Also, do not operate the outside handle before these connections are made.

  20.  

Front
  1. Remove the interior trim panel.
  2.  
  3. Remove the water deflector.
  4.  
  5. Remove the outside door handle.

    Click image to see an enlarged view

    Fig. Removing three front side door lock screws (1) and front door lock assembly (2)-front door

  6.  
  7. Remove the three front side door lock screws.
  8.  
  9. Release the door lock cable retainers from the door.
  10.  
  11. Disconnect the door lock electrical connector.
  12.  
  13. Remove the door lock with the handle housing.
  14.  
  15. Remove the handle and lock rods from the lock.
  16.  
  17. To install, reverse removal procedure.
  18.  

Rear
  1. Remove the rear door outside handle.
  2.  
  3. Remove the interior trim panel.
  4.  
  5. Remove the water deflector.

    Click image to see an enlarged view

    Fig. Removing three front side door lock screws (1) and front door lock assembly (2)-rear door

  6.  
  7. Remove the three rear side door lock screws.
  8.  
  9. Release the inside handle cable retainers before removing the door lock.
  10.  
  11. Disconnect the door lock electrical connector.
  12.  
  13. Remove the door lock with the outside handle housing.
  14.  
  15. Transfer the handle and lock rods to the new door lock.
  16.  
  17. To install, reverse removal procedure.
  18.  

Door Lock Switch
  1. Pull out at the front edge of the bezel to disengage the retainer.
  2.  
  3. Disconnect the door lock switch electrical connector.
  4.  
  5. Remove door lock switch assembly.
  6.  
  7. To install, reverse removal procedure.
  8.  

 
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