GM Service Manual Online
For 1990-2009 cars only

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

  1. Perform the Diagnostic System Check - Vehicle , in order to verify that all of the following conditions are true.
  2.    • No DTCs are 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. Refer to Wiper/Washer System Description and Operation .

Visual/Physical Inspection

    • Inspect the washer fluid reservoir for the proper fluid level and condition.
    • Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
    • Inspect for aftermarket devices which could affect the operation of the Windshield Wiper/Washer System.

Intermittent

    • If the wipers operate at low speed for approximately 3 seconds and then stop, the wiper motor park switch, or its signal circuit, may be malfunctioning.
    • 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:

    •  Windshield Wiper System Malfunction
    •  Low Washer Fluid Indicator Malfunction
    •  Washer Malfunction
    •  Windshield Washer Solvent Heater Malfunction
    •  Moisture Sensing Feature Inoperative
    •  Wiper Blade Element Check