Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSWIPER SYSTEM & WASHER SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESWASHER MALFUNCTIONCIRCUIT/SYSTEM TESTINGHEADLAMP WASHER FLUID PUMP TEST
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Headlamp Washer Fluid Pump Test
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Headlamp Washer Fluid Pump Test
- Ignition OFF, disconnect the harness connector at the windshield washer fluid pump.
- Test for less than 1 ohm of resistance between the ground circuit terminal B and ground.
- If greater than 1 ohm, repair the ground circuit for an open/high resistance.
- Ignition ON, verify that a test lamp illuminates between the washer pump control circuit terminal A and ground while pressing the washer switch.
- If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the underhood fuse block.
- If all the circuits test normal, test or replace the windshield washer fluid pump.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.