GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Express 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L 🢒 Water-in-Fuel Draining
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  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. Object Number: 1663157 Size: SH
  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.