GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Camaro 🢒 Engine 🢒 Engine Controls - 5.7L 🢒 Intake Manifold Replacement

Removal Procedure

    Object Number: 208459 Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
  2. Raise the vehicle and support. Refer to Lifting and Jacking the Vehicle in General Information
  3. Remove the transmission fluid indicator tube bolt.
  4. Lower the vehicle.
  5. Relieve the fuel pressure. Refer to Fuel Pressure Relief Procedure in Engine Controls - 5.7L.

    6. Important: Cap the fittings and plug the holes when separative fuel system components in order to prevent dripping of fuel and/or dirt and other contaminants from entering the fuel system.


    Object Number: 220597 Size: SH
  6. Disconnect the fuel lines from the fuel rail.
  7. disconnect the fuel line from the fuel vapor purge valve.

    8. Object Number: 208553 Size: SH
  8. Disconnect the intake air temperature (IAT) sensor connector at the air intake duct.
  9. Disconnect the mass airflow (MAF) sensor connector at the air intake duct.

    10. Object Number: 208569 Size: SH
  10. Remove the air intake duct from the throttle body and the air cleaner box.

    11. Object Number: 220606 Size: SH
  11. Disconnect the idle air control (IAC) valve electrical connector from the throttle body.
  12. Disconnect the throttle position sensor (TPS) electrical connector from the throttle body.
  13. Remove the accessory drive belt. Refer to Drive Belt Replacement .

    14. Object Number: 220595 Size: SH
  14. Disconnect the exhaust gas recirculation (EGR) solenoid electrical connector.

    15. Object Number: 220596 Size: SH
  15. Remove the EGR valve pipe and solenoid.

    16. Object Number: 220601 Size: SH
  16. Unsnap the cruise control cable from the throttle lever, if equipped.
    17. • Push the cruise cable connector forward to unsnap.
    • Unsnap the cable from the engine bracket.

    Object Number: 220602 Size: SH
  17. Remove the accelerator cable from the throttler lever.

    18. Object Number: 220603 Size: SH
  18. Remove the accelerator control cable and cruise control servo bracket.

    19. Object Number: 220605 Size: SH
  19. Disconnect the right side fuel injector connectors.

    20. Object Number: 220608 Size: SH
  20. Disconnect the left side fuel injector connectors.
  21. Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement in Engine Controls - 5.7L.

    22. Object Number: 220609 Size: SH
  22. Disconnect the manifold absolute pressure (MAP) sensor electrical connector.
  23. Disconnect the vacuum hose from the vacuum port on the MAP sensor housing.

    24. Object Number: 379365 Size: SH
  24. Disconnect the knock sensor connector (4).
  25. Disconnect all the remaining electrical connections from the intake manifold.

    26. Object Number: 220612 Size: SH
  26. Remove the knock sensor jumper wire from the PCV hose.

    27. Object Number: 220598 Size: SH
  27. Remove the PCV valve pipe from the PCV valve.

    28. Object Number: 220613 Size: SH
  28. Remove the PCV valve pipe from the rocker cover.

    29. Object Number: 220619 Size: SH
  29. Remove the fresh air hose from the throttle body and coil assembly.

    30. Object Number: 220621 Size: SH
  30. Remove the engine coolant air bleed hose from the throttle body.

    31. Object Number: 220620 Size: SH
  31. Remove the throttle body heater outlet hose from the throttle body.

    32. Object Number: 220615 Size: SH
  32. Remove the EVAP canister purge tube.

    33. Object Number: 220617 Size: SH
  33. Remove the canister purge valve and bracket.

    34. Object Number: 178557 Size: SH
  34. Remove the intake manifold. Refer toIntake Manifold Removal .
  35. Remove the fuel rail stop bracket from the intake manifold.

Installation Procedure

    Object Number: 178557 Size: SH
  1. Install the intake manifold. Refer toIntake Manifold Removal .
  2. Install the fuel rail stop bracket to the intake manifold.

    3. Object Number: 220617 Size: SH
  3. Install the canister purge valve and bracket.

    4. Object Number: 220615 Size: SH
  4. Install the EVAP canister purge tube.

    5. Object Number: 220620 Size: SH
  5. Install the throttle body heater outlet hose to the throttle body.

    6. Object Number: 220621 Size: SH
  6. Install the engine coolant air bleed hose to the throttle body.

    7. Object Number: 220619 Size: SH
  7. Install the fresh air hose to the throttle body and coil assembly.

    8. Object Number: 220613 Size: SH
  8. Connect the PCV valve pipe to the rocker cover.

    9. Object Number: 220598 Size: SH
  9. Connect the PCV valve pipe to the PCV valve.

    10. Object Number: 220612 Size: SH
  10. Connect the knock sensor jumper wire to the PCV valve hose.

    11. Object Number: 379365 Size: SH
  11. Connect the knock sensor connector (4).

    12. Object Number: 220609 Size: SH
  12. Connect the MAP sensor connector.
  13. Connect the vacuum hose.

    14. Object Number: 220608 Size: SH
  14. Connect the left side fuel injector connectors.

    15. Object Number: 220605 Size: SH
  15. Connect the right side fuel injector connectors.
  16. Connect all remaining electrical connectors to the intake manifold.

    17. Object Number: 220603 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  17. Install the accelerator control cable and cruise control servo bracket.

    18. Tighten
    Tighten the accelerator control cable and cruise control servo bracket nut to 10 N·m (89 lb in).


    Object Number: 220602 Size: SH
  18. Install the accelerator cable to the throttle lever.

    19. Object Number: 220601 Size: SH
  19. Install the cruise control cable to the throttle lever, if equipped.

    20. Object Number: 220596 Size: SH
  20. Install the EGR valve pipe.

    21. Tighten

        • Tighten the EGR valve pipe to exhaust manifold bolts to 25 N·m (18 lb ft).
        • Tighten the EGR valve pipe to cylinder head bolt to 50 N·m (37 lb ft).
        • Tighten the EGR valve pipe to intake manifold bolt to 12 N·m 106 lb in).

    Object Number: 220595 Size: SH
  21. Connect the EGR valve connector.
  22. Install the accessory drive belt. Refer to Drive Belt Replacement .

    23. Object Number: 220606 Size: SH
  23. Connect the TPS sensor connector to the throttle body.
  24. Connect the IAC sensor connector to the throttle body.

    25. Object Number: 208569 Size: SH
  25. Install the air intake duct.

    26. Object Number: 208553 Size: SH
  26. Connect the MAF sensor connector at the intake duct.
  27. Connect the IAT sensor connector at the intake duct.
  28. Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement in Engine Controls - 5.7L.

    29. Object Number: 220597 Size: SH
  29. Connect the fuel lines to the fuel rail.
  30. Connect the fuel line to the fuel vapor purge valve.
  31. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information

    32. Object Number: 208459 Size: SH
  32. Install the transmission fluid indicator bolt.

    33. Tighten
    Tighten the transmission fluid indicator tube bolt to 50 N·m (37 lb ft).

  33. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.