Water-in-Fuel Draining Procedure

WARNING: This page is about a different variant/trim than selected.

Attach a small piece of hose to the drain cock onto the water-in-fuel sensor.

Fig 1: View Of Fuel Filter
Courtesy of GENERAL MOTORS CORP.
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.

Fig 2: Water-In-Fuel Drain Cock
Courtesy of GENERAL MOTORS CORP.
Operate the priming pump until only diesel fuel is visible. Allow the pump to return upward between pushes.

Fig 3: Operating Priming Pump
Courtesy of GENERAL MOTORS CORP.
Tighten the drain cock.
Remove the container and hose.