GM Service Manual Online
For 1990-2009 cars only

Power Door Locks

Important: The following steps must be completed before using the symptom tables.

  1. Perform the Diagnostic System Check - Vehicle , before using the Symptom Tables in order to verify that all of the following are true:
  2. • There are no DTCs set.
    • The control modules can communicate via the serial data link.
  3. Review the system operation in order to familiarize yourself with the system functions:
  4. •  Power Door Locks Description and Operation
    •  Luggage Compartment Description and Operation
    •  Door Ajar Indicator Description and Operation

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

    •  Power Door Lock Key Cylinder Switches Inoperative
    •  Trunk Release Inoperative
    •  Power Door Locks Malfunction
    •  Trunk Ajar Indicator Malfunction
    •  Door Ajar Indicator Malfunction