GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Controls - 6.6L (LLY) 🢒 Fuel Injection Fuel Rail Assembly Replacement - Bank 2

Removal Procedure

    Object Number: 1335586 Size: SH
  1. Disconnect the negative battery cables. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  3. Remove the fuel injection control module (FICM). Refer to Fuel Injector Control Module Replacement .
  4. Remove the fuel filter. Refer to Fuel Filter Replacement .
  5. Remove the exhaust gas recirculation (EGR) cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
  6. Remove the positive crankcase ventilation (PCV) hose/pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .
  7. Disconnect the fuel rail balance pipe from the fuel rails.
  8. Remove the fuel rail balance pipe bolts.
  9. Remove the fuel rail balance pipe.

    10. Object Number: 1335614 Size: SH
  10. Prior to removing the fuel injector pipes, use compressed air to blow any debris from between the injector line and fittings. Wipe the fittings clean of debris.
  11. Spray lithium grease, GM P/N 12346293 or equivalent, between the fuel injector line and fittings to assist in containing any debris during removal.

    12. Notice: DO NOT use compressed air to clean debris from the fuel injector inlet after the fuel line is removed. Using compressed air can allow debris to enter the fuel injector inlet and damage the fuel injector.

  12. Remove the fuel injector pipes.

    13. Object Number: 1335617 Size: SH
  13. Remove the fuel rail bolts.
  14. Remove the fuel rail.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1335617 Size: SH
  1. Install the fuel rail.
  2. Install the fuel rail bolts.

    3. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).


    Object Number: 1335614 Size: SH

    Notice: Ensure proper torquing of the fuel injector line. An under-torqued fuel injector line will not seal properly and an over-torqued fuel injector line may damage the fuel injector fitting. An improperly sealed or damaged fuel injector line or fuel injector fitting will cause a fuel leak.

  3. Install the fuel injector pipes.

    4. Tighten
    Tighten the fittings to 41 N·m (30 lb ft).


    Object Number: 1335586 Size: SH
  4. Install the fuel rail balance pipe.
  5. Connect the fuel rail balance pipe to the fuel rails.

    6. Tighten
    Tighten the fittings to 41 N·m (30 lb ft).

  6. Install the fuel rail balance pipe bolts.

    7. Tighten
    Tighten the bolts 25 N·m (18 lb ft).

  7. Install the PCV hose/pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .
  8. Install the EGR cooler tube. Refer to Exhaust Gas Recirculation Valve Cooler Replacement .
  9. Install the fuel filter. Refer to Fuel Filter Replacement .
  10. Install the FICM. Refer to Fuel Injector Control Module Replacement .
  11. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  12. Connect the negative battery cables. Refer to Battery Negative Cable Disconnection and Connection .
  13. Prime the fuel system. Refer to Fuel System Priming .
  14. Start the engine. If the engine stalls, repeat the above step.
  15. Once the engine starts, inspect for fuel leaks.