GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Savana 🢒 Engine 🢒 Engine Controls - 6.5L (L65) 🢒 Water in Fuel Indicator Sensor Replacement

Removal Procedure

    Caution: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.

  1. Raise the vehicle.
  2. Remove the fuel tank filler cap.
  3. Remove the protective shield from fuel manager/filter.

    4. Object Number: 63084 Size: SH
  4. Open the air bleed valve on top of the fuel manager/filter in order to release any pressure in the fuel supply system.

    5. Object Number: 64302 Size: SH
  5. Disconnect the sensor wiring connector by pulling straight down.
  6. Remove the water in fuel sensor by turning counter clock wise.

Installation Procedure

    Object Number: 37978 Size: SH
  1. Install the new water in fuel sensor (7) and seal.
  2. Reconnect the sensor connector.
  3. Install the protective shield.
  4. Bleed the air from the fuel manager/filter if necessary. Refer to Fuel Feed Pipe and Return Pipe Purging .
  5. Install fuel tank filler cap.
  6. Lower the vehicle.