GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L (LBZ and 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.
  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.
  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.