GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Controls - 6.6L (LLY) 🢒 Water in Fuel Indicator Sensor Replacement

Removal Procedure

    Object Number: 1334874 Size: SH
  1. Drain the fuel from the fuel filter. Refer to Water-in-Fuel Draining .
  2. Remove the right front wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.
  3. Disconnect the fuel filter electrical connectors.

    4. Object Number: 752028 Size: SH
  4. Remove the water-in-fuel sensor (3) from the fuel filter (2).

Installation Procedure

    Object Number: 752028 Size: SH

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

  1. Install the water-in-fuel sensor (3) to the fuel filter (2).

    2. Object Number: 1334874 Size: SH
  2. Connect the fuel filter electrical connector.
  3. Install the right front wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.
  4. Prime the fuel system. Refer to Fuel System Priming .
  5. Start the engine. If the engine stalls, repeat the above step.
  6. Once the engine starts, inspect for fuel leaks.