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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 995 (ENGINE CONTROLS - 6.6L (LB7) (INTRODUCTION))REPAIR INSTRUCTIONSFUEL JUNCTION BLOCK REPLACEMENTREMOVAL PROCEDURE
2004 Oldsmobile Bravada RWD

Removal Procedure

2004 Oldsmobile Bravada RWDSECTION Removal 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.
  1. Move the hood to the service position, by moving the hood hinge bolts (1) to the service position (2).
    2. Fig 1: Identifying Hood Hinge Normal And Service Position Bolt Holes
    GM310799Courtesy of GENERAL MOTORS CORP.
  2. Disconnect 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.
  3. Loosen the outlet duct clamp at the upper intake manifold cover.
  4. Remove the upper intake manifold cover from the outlet duct.
  5. Remove the upper intake manifold cover.
    6. Fig 2: View Of Upper Intake Manifold Cover, Outlet Duct & Clamp
    GM813243Courtesy of GENERAL MOTORS CORP.
  6. Drain the cooling system. Refer to Draining and Filling Cooling System (with HP2) or Draining and Filling Cooling System (without HP2) in Engine Cooling.
  7. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L.
  8. Reposition the air conditioning (A/C) compressor using the following procedure:
    1. Disconnect the A/C compressor clutch electrical connector.
    2. Disconnect the A/C cut out switch electrical connector.
    3. Remove the A/C compressor mounting bolts.
    4. Reposition the A/C compressor with the hoses attached to the right side of the engine compartment.
      5. Fig 3: View Of A/C Compressor & Bolts
      GM652573Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the left front injector harness electrical connector (1).
    10. Fig 4: Left Front Injector Harness Electrical Connector
    GM759733Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the oil pressure sending unit electrical connector.
  11. Disconnect the turbocharger coolant hose and clamp from the turbocharger bypass valve.
    12. Fig 5: View Of Turbocharger Inlet Coolant Hose
    GM668427Courtesy of GENERAL MOTORS CORP.
  12. Disconnect the water outlet tube using the following procedure:
    1. Remove the bolts attaching the water outlet tube to the left rocker arm cover.
    2. Remove the bolt attaching the water outlet tube to the thermostat housing.
    3. Remove the water outlet tube.
    4. Remove and discard the O-ring seal.
    13. Fig 6: Water Outlet Tube & Bolt
    GM699329Courtesy of GENERAL MOTORS CORP.
  13. Reposition the positive crankcase ventilation (PCV) hose clamp.
  14. Remove the PCV hose from the upper valve rocker arm cover.
    15. Fig 7: View Of Crankcase Ventilation Hoses At Valve Rocker Arm Covers
    GM687021Courtesy of GENERAL MOTORS CORP.
  15. Loosen the charged air cooler inlet duct to turbocharger clamp (1).
    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.
    16. Fig 8: View Of Charged Air Cooler Inlet Duct & Clamps
    GM877281Courtesy of GENERAL MOTORS CORP.
  16. Remove the charged air cooler inlet duct from the turbocharger.
  17. Remove the banjo bolt (1) from the fuel junction block.
  18. Disconnect the fuel pipes (3) from the fuel junction block.
    19. Fig 9: Fuel Injection Block Banjo Bolt, Fuel Pipe & Nuts
    GM755766Courtesy of GENERAL MOTORS CORP.
  19. Disconnect the fuel pipe junction block from the fuel rail (1).
    20. Fig 10: Fuel Pipe Junction Block At Fuel Rail
    GM755759Courtesy of GENERAL MOTORS CORP.
  20. Remove the fuel junction block nuts.
    21. Fig 11: Fuel Junction Block Nuts
    GM660442Courtesy of GENERAL MOTORS CORP.
  21. Remove the fuel junction block.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.