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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 996 (Engine Controls And Fuel - 4.8L, 5.3L, 6.0L, 6.2L, Or 7.0L - Introduction (2 Of 2)) >> Repair Instructions >> Fuel Injection Fuel Rail Crossover Tube Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Fuel Rail Cross Over Pipe & Components
    GM1706107Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the NEW fuel rail crossover pipe O-ring seals with clean engine oil.
  2. Install NEW fuel rail crossover pipe O-ring seals (4) onto the crossover pipe.
  3. Install the fuel rail crossover pipe (1) into the fuel rails.
  4. Install the fuel rail crossover pipe retainers (3).
    5. NOTE: Refer to Fastener Notice .
  5. Install the fuel rail crossover pipe retainer screws (2).

    Tighten:  Tighten the screws to 3.8 N.m (34 lb in).

    6. Fig 2: View Of Engine Wiring Harness, Clip, Bolt & Connector
    GM1696914Courtesy of GENERAL MOTORS CORP.
  6. Gather the branches of the engine wiring harness and position over the top of the engine.
  7. Position the engine wiring harness clip to the generator bracket and install the clip bolt (3).

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

    8. Fig 3: View Of Battery Cable Terminals & Stud
    GM1699543Courtesy of GENERAL MOTORS CORP.
  8. Position the negative battery cable terminal (2) and engine wiring harness ground terminal (3) to the right cylinder head.
  9. Install the negative battery cable stud (1) to the cylinder head.

    Tighten:  Tighten the stud to 25 N.m (18 lb ft).

    10. Fig 4: View Of CPA Retainer, Engine Harness Electrical Connectors & Harness Clips
    GM1696893Courtesy of GENERAL MOTORS CORP.
  10. Connect the engine wiring harness electrical connector (1) to the ignition coil main electrical connector.
  11. Install the CPA retainer (2).
  12. Connect the engine wiring harness electrical connector (3) to the electronic throttle control.
  13. Connect the engine wiring harness electrical connectors (7) to the fuel injectors, perform the following:
    1. Ensure that the CPA retainer is pulled out 1 click.
    2. Connect the electrical connectors to their corresponding injectors.
    3. Push the CPA retainer in 1 click.
    4. Ensure that the connector is secured.
  14. Install the engine wiring harness clip (4) to the generator battery jumper cable.
  15. Install the engine wiring harness clip (6) to the ignition coil bracket stud.
    16. Fig 5: View Of CPA Retainer, Electrical Connectors & Engine Harness Clips
    GM1696892Courtesy of GENERAL MOTORS CORP.
  16. Connect the engine wiring harness electrical connector (1) to the ignition coil main electrical connector.
  17. Install the CPA retainer (2).
  18. Connect the engine wiring harness electrical connectors (3) to the fuel injectors, perform the following:
    1. Ensure that the CPA retainer is pulled out 1 click.
    2. Connect the electrical connectors to their corresponding injectors.
    3. Push the CPA retainer in 1 click.
    4. Ensure that the connector is secured.
    19. Fig 6: View Of Engine Harness Retainer Nut & Electrical Connectors
    GM1696891Courtesy of GENERAL MOTORS CORP.
  19. Connect the engine wiring harness electrical connector (4) to the MAP sensor.
  20. Connect the engine wiring harness electrical connector (3) to the generator.
  21. Connect the engine wiring harness electrical connector (2) to the EVAP purge solenoid.
  22. Install the engine wiring harness bracket nut (1).

    Tighten:  Tighten the nut to 5 N.m (44 lb in).

  23. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (w/Single Battery) or Battery Negative Cable Disconnection and Connection (w/Auxiliary Battery) or Battery Negative Cable Disconnection and Connection (w/Dual Batteries) .
  24. Use the following procedure in order to inspect for leaks:
    1. Turn the ignition ON, with the engine OFF for 2 seconds.
    2. Turn the ignition OFF for 10 seconds.
    3. Turn the ignition ON, with the engine OFF.
    4. Inspect for leaks.
  25. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
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