GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L (LMM) 🢒 Water in Fuel Indicator Sensor Replacement

Removal Procedure

    Object Number: 1865172 Size: SH
  1. Disconnect the water-in-fuel sensor electrical connector (1) from the engine wiring harness electrical connector.

    2. Object Number: 1865174 Size: SH
  2. Remove the water-in-fuel sensor (1) from the fuel filter.

Installation Procedure

    Object Number: 1865174 Size: SH

    Important: The water-in-fuel sensor must only be hand tightened.

  1. Install the water-in-fuel sensor (1) to the fuel filter.

    2. Object Number: 1865172 Size: SH
  2. Connect the water-in-fuel sensor electrical connector (1) to the engine wiring harness electrical connector.
  3. Prime the fuel system. Refer to Fuel System Priming