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 G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM & FUEL SYSTEM - 6.6L (LMM) - INTRODUCTION (2 OF 2)REPAIR INSTRUCTIONSWATER-IN-FUEL DRAINING
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Water-in-Fuel Draining
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Water-in-Fuel Draining
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
- Attach a small piece of hose to the drain cock onto the water-in-fuel sensor.
- Place an approved fuel-resistant container under the fuel filter.
- Open the drain cock 3 or 4 turns or until the water contaminated fuel seeps from the drain cock.
- Prime the fuel system until only diesel fuel is visible. Refer to Fuel System Priming .
- Tighten the drain cock.
- Remove the container and hose.
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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.