GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1198929  Size: SH
  1. Attach a small piece of hose to the drain cock onto the water-in-fuel sensor.
  2. Place an approved fuel-resistant container under the fuel filter.
  3. Open the drain cock three or four turns or until the water contaminated fuel seeps from the drain cock.

  4. Object Number: 1198930  Size: SH
  5. Operate the priming pump until only diesel fuel is visible. Allow the pump to return upwards between pushes.
  6. Tighten the drain cock.
  7. Remove the container and hose.