GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Controls - 6.6L (LB7) 🢒 Fuel Injection Fuel Feed Pipe Replacement - Right Side

Removal Procedure

    Object Number: 877275 Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  2. Loosen the charged air cooler outlet duct clamp (1).

    3. Important: Do not use a screwdriver or other tool to pry the hose loose. The hose can be torn or damaged. Loosen the hose by twisting.

  3. Remove the charged air cooler outlet duct.

    4. Object Number: 665386 Size: SH
  4. Remove the heater outlet hose bolt (2) from the generator bracket.
  5. Remove the fuel filter. Refer to Fuel Filter Replacement .
  6. Remove the fuel injection control module. Refer to Fuel Injector Control Module Replacement .
  7. Position the heater outlet hose out of the way.
  8. Remove exhaust gas recirculation (EGR) valve. Refer to Exhaust Gas Recirculation Valve Replacement .

    9. Object Number: 1336209 Size: SH
  9. Before removing the fuel injector lines, use compressed air to blow any debris from between the injector line and fittings (1, 2). Wipe the fittings clean of debris.
  10. Spray lithium grease, GM P/N 12346293 or equivalent, between the fuel injector line and fittings (1, 2) to assist in containing any debris during removal.

    11. Object Number: 660502 Size: SH
  11. Remove the fuel injector feed pipe retainer bolts and retainers.

    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 fuel injector feed pipes.

Installation Procedure

    Object Number: 660502 Size: SH
  1. Install the fuel injector feed pipes.

    2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1336209 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.

  2. Tighten the fuel injector feed pipe fittings  (1, 2).

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

  3. Install the fuel injector feed pipe retainers and bolts.

    4. Tighten
    Tighten the screws to 4 N·m (35 lb in).

  4. Install EGR valve. Refer to Exhaust Gas Recirculation Valve Replacement .

    5. Object Number: 665386 Size: SH
  5. Position the heater outlet hose.
  6. Install the fuel filter. Refer to Fuel Filter Replacement .
  7. Install the fuel injection control module. Refer to Fuel Injector Control Module Replacement .
  8. Install the heater outlet hose bolt (2) to the generator bracket.

    9. Tighten
    Tighten the bolt to 21 N·m (15 lb ft).


    Object Number: 877275 Size: SH
  9. Install the charged air cooler outlet duct to the intake.
  10. Align the mark on the duct (3) with the mark on the turbocharger.
  11. Position the clamp (1) as shown for proper clearance.

    12. Tighten
    Tighten the clamp to 6 N·m (53 lb in).

  12. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .