gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Procedures|Page 8698 > < Fuel Temperature Sensor|Specifications|Page 8693
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Fuel/Water Separator: Procedures

Water-in-Fuel Draining

1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Attach a small piece of hose to the drain cock onto the water-in-fuel sensor.
3. Place an approved fuel-resistant container under the fuel filter.

4. Open the drain cock 3 or 4 turns or until the water contaminated fuel seeps from the drain cock.
5. Prime the fuel system until only diesel fuel is visible. Refer to Fuel System Priming.
6. Tighten the drain cock.
7. Remove the container and hose.

Procedures|Page 8698 > < Fuel Temperature Sensor|Specifications|Page 8693