GM Service Manual Online
For 1990-2009 cars only

Important: Review the system operation in order to familiarize yourself with the system functions. Refer to

   •  Wiper/Washer System Circuit Description .
   •  Wiper/Washer System Description

Visual/Physical Inspection

    • Inspect for aftermarket devices which could affect the operation of the Wiper/Washer 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:

    •  Wipers All Modes and Washer Inoperative
    •  Wipers Delay Mode Inoperative
    •  Wipers Low Mode Inoperative, High Mode Operates
    •  Wipers Low Mode Operates with Switch in High
    •  Wipers Always On
    •  Washers Inoperative
    •  Washers Always On