GM Service Manual Online
For 1990-2009 cars only

Important: 

  1. Perform the Diagnostic System Check - Power Door Systems before using the Power Door Symptom Tables in order to verify that all of the following are true:
  2.    • There are no DTCs set.
       • The control module(s) can communicate via the serial data link.
  3. Review the system operation in order to familiarize yourself with the system functions. Refer to Power Windows Circuit Description Power Door Locks Circuit Description Outside Mirrors Circuit Description Power Windows Description .

Visual/Physical Inspection

    • Inspect for aftermarket devices which could affect the operation of the Power Door System. Refer to Checking Aftermarket Accessories in Wiring Systems.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

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

Symptom List

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

    •  Power Door Locks Inoperative - All Doors and Switches
    •  Power Door Locks Inoperative - Side
    •  Power Door Lock Inoperative - Left Side Front
    •  Power Door Locks Inoperative - Side Door Delay
    •  Power Door Locks Inoperative - One Motor
    •  Power Door Locks Inoperative - Rear Door
    •  Power Mirrors Inoperative
    •  Power Mirrors Inoperative in Left/Right Direction - Left Side
    •  Power Mirrors Inoperative in Left/Right Direction - Right Side
    •  Power Mirrors Inoperative in Up/Down Direction - Left Side
    •  Power Mirrors Inoperative in Up/Down Direction - Right Side
    •  Door Diagnosis - Mechanical
    •  Power Window Inoperative - Right Side Front from Right Side Front Switch
    •  Power Window Inoperative - Right Side Front
    •  Power Windows Inoperative from Left Front Switch
    •  Power Window Inoperative - Left Side