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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 977 (Engine Controls - 6.6L (LLY) (Introduction)) >> Repair Instructions >> Fuel Injector Feed Pipes Replacement - Left >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: 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.
    Fig 1: View Of Left Fuel Injector Pipes
    GM1335608Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  1. Install the fuel injector pipes.

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

  2. After installing the fuel injector pipes, clean the injector pipes and apply sealant GM P/N 97720043, at the fittings to prevent moisture and debris from collecting between the line and fitting.
  3. Install the PCV hose/pipe. Refer to Crankcase Ventilation Hoses/Pipes Replacement in Engine Mechanical - 6.6L (LLY).
    4. Fig 2: Glow Plug Controller Battery Feed Electrical Connector
    GM1409333Courtesy of GENERAL MOTORS CORP.
  4. Connect the glow plug controller battery feed electrical connector (1).
    5. Fig 3: View Of Glow Plug Controller Electrical Connectors
    GM1335531Courtesy of GENERAL MOTORS CORP.
  5. Connect the glow plug controller electrical connectors.
  6. Install the auxiliary generator, if equipped. Refer to Generator Replacement - Auxiliary (6.6L (LB7) Engine) or Generator Replacement - Auxiliary (6.6L (LLY) Engine) in Engine Electrical.
  7. Install the water outlet tube. Refer to Water Outlet Tube Replacement (6.6L (LB7) Engine) or Water Outlet Tube Replacement (6.6L (LLY) Engine) in Engine Cooling.
    8. Fig 4: View Of Main Electrical Connector Harness Bracket & Bolts
    GM1334948Courtesy of GENERAL MOTORS CORP.
  8. Install the engine harness main connector bracket bolts.

    Tighten:  Tighten the bolts to 21 N.m (15 lb ft).

  9. Connect the barometric sensor electrical connector.
    10. Fig 5: View Of Main Engine Electrical Harness Connector Bolts
    GM1334916Courtesy of GENERAL MOTORS CORP.
  10. Install the engine harness main electrical connectors bolts.

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

    11. Fig 6: View Of Main Engine Electrical Harness Connector Latches & Harness Clip
    GM1409327Courtesy of GENERAL MOTORS CORP.
  11. Connect the main engine electrical harness connectors.
  12. Push down on the latches (1) in order to connect the connectors.
  13. Close the harness clip (2).
    14. Fig 7: View Of Fuel Line Bracket & Nut
    GM1378748Courtesy of GENERAL MOTORS CORP.
  14. Install the fuel line bracket from the stud.
  15. Install the fuel line bracket nut.

    Tighten:  Tighten the nut to 21 N.m (15 lb ft).

  16. Connect the fuel lines. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
    17. Fig 8: View Of Battery Cable Junction Block Bolt At Power Steering Pump Bracket
    GM1409332Courtesy of GENERAL MOTORS CORP.
  17. Position the generator positive cable.
  18. Install the generator positive cable in the clip on the engine front cover.
  19. Install the generator positive cable and nut to the generator.

    Tighten:  Tighten the nut to 9 N.m (80 lb in).

  20. Install the battery positive cable junction block bracket and bolt (1) to the power steering bracket.

    Tighten:  Tighten the bolt to 9 N.m (80 lb in).

    21. Fig 9: View Of Turbocharger Clamp & Charged Air Cooler Inlet Duct Connector
    GM1334380Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Lubricate the end of the duct prior to installation.
  21. Remove the tape from the turbocharger openings.
  22. Install the charged air cooler inlet duct connector (4) to the turbocharger.
  23. Tighten the charged air cooler inlet duct connector to turbocharger clamp (1).

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

  24. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement in Engine Mechanical - 6.6L (LLY).
  25. Fill the cooling system. Refer to Draining and Filling Cooling System (with HP2) or Draining and Filling Cooling System (without HP2) in Engine Cooling.
  26. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical.
  27. Prime the fuel system. Refer to Fuel System Priming .
  28. Start the engine. If the engine stalls, repeat the above step.
  29. Once the engine starts, inspect for fuel leaks.
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