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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 881 (Wiper System & Washer System) >> Diagnostic Information and Procedures >> Washer Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition on, verify that a test lamp connected to ground does not illuminate on either side of the FRT WASH fuse while the windshield washer switch is inactive.
    • If the test lamp illuminates on one or both sides of the fuse perform the Windshield Washer Pump Always On Circuit Test.
  2. Ignition on, verify that a test lamp connected to ground illuminates on at least one side of the FRT WASH fuse while pressing the windshield washer switch.
    • If the test lamp does not illuminate on either side of the fuse, perform the Windshield Washer Switch Circuit Test.
  3. If the test lamp illuminates on one or both sides of the fuse perform the Windshield Washer Pump Circuit Test.
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