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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1238 (WIPER SYSTEM & WASHER SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESWASHER MALFUNCTIONCIRCUIT/SYSTEM TESTINGWASHER SWITCH TEST
2006 Chevrolet Suburban K2500, 6.0 U

Washer Switch Test

2006 Chevrolet Suburban K2500, 6.0 USECTION Washer Switch Test
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, verify that the scan tool Headlamp Washer Switch parameter is Active while pressing the washer switch.
    • If not Active, test the following:
      • Perform the multifunction switch component test.
      • Test the Headlamp washer switch signal circuit for an open/high resistance. If the headlamp washer switch and circuit test normal, test or replace the BCM.
  2. Ignition OFF, disconnect the X2 harness connector at the underhood fuse block.
  3. Ignition ON, verify that a test lamp illuminates between the windshield washer pump relay control circuit terminal 13 and battery voltage while pressing the washer switch.
    • If the test lamp does not illuminate, test the washer relay control circuit terminal 13 for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the BCM.
  4. If all circuits test normal, test or replace the underhood fuse block.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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