GM Service Manual Online
For 1990-2009 cars only

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

  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 body control module (BCM) 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. Refer to Checking Aftermarket Accessories.

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 diagnosis the symptom:

    •  Windshield Wiper Washer System Malfunction
    •  Wiper Arm Tip Pressure Check
    •  Wiper Blade Element Check