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For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 Sonoma Pickup - 4WD 🢒 Engine 🢒 Engine Electrical 🢒 Intake Manifold Disassemble

Intake Manifold Disassemble L35


    Object Number: 374902 Size: SH
  1. Remove the nuts, the studs, and the accelerator control cable bracket.

    2. Object Number: 12852 Size: SH
  2. Remove the throttle body attaching studs.

    3. Object Number: 12853 Size: SH
  3. Remove the throttle body.
  4. Remove the throttle body to upper intake manifold gasket.
  5. Discard the throttle body to upper intake manifold gasket.

    6. Object Number: 480559 Size: SH
  6. Remove the water outlet studs.
  7. Remove the water outlet (1 or 2).
  8. Remove the engine coolant thermostat.

    9. Object Number: 480563 Size: SH

    Important: Note the position and direction of the exhaust gas recirculation (EGR) valve before removal. It is possible to improperly install the EGR valve 180 degrees from the original position.

  9. Remove the exhaust gas recirculation (EGR) valve bolts.

    10. Some applications will not have an EGR valve.


    Object Number: 480565 Size: SH

    Notice: The Linear EGR valve is an electrical component. DO NOT soak in any liquid cleaner or solvent because damage may result.

  10. Remove the EGR valve and the EGR valve gasket from the lower intake manifold.
  11. Discard the EGR valve gasket.

    12. Object Number: 480566 Size: SH
  12. Remove the engine coolant temperature (ECT) sensor plug (1) or the ECT sensor (2) from the front of the lower intake manifold, if equipped.

    13. Object Number: 480561 Size: SH
  13. Remove the studs and the ignition coil.

    14. Object Number: 480562 Size: SH
  14. Remove the manifold absolute pressure (MAP) sensor.
  15. Remove the MAP sensor seal from the MAP sensor.
  16. Discard the MAP sensor seal.

    17. Object Number: 334517 Size: SH
  17. Remove the fuel pipe bolt (4).
  18. Remove the fuel pipe retainer nuts (1).
  19. Remove the fuel pipe retainer (2).
  20. Remove the fuel pipe (3).
  21. Remove and discard the fuel seal retainers (5).
  22. Remove and discard the fuel seals (6), yellow O-rings.
  23. Remove and discard the spacer rings (7), flat washers.
  24. Remove and discard the fuel seals (8), black O-rings.

    25. Object Number: 334511 Size: SH
  25. Remove the studs and the evaporative emission (EVAP) canister purge solenoid valve.
  26. Remove the nut and the engine wiring harness bracket.

    27. Object Number: 334513 Size: SH
  27. Remove the upper intake manifold attaching studs.
  28. Remove the upper intake manifold.
  29. Remove the upper intake manifold to lower intake manifold gasket.
  30. Discard the upper intake manifold to lower intake manifold gasket.

    31. Object Number: 523513 Size: SH
  31. Remove the fuel meter body seal and discard.
  32. Remove the 6 poppet nozzles from the lower intake manifold bores.
  33. Remove the fuel meter body.
  34. Remove the bolt and the fuel meter body bracket.

Intake Manifold Disassemble LU3


    Object Number: 374902 Size: SH
  1. Remove the nuts, the studs, and the accelerator control cable bracket.

    2. Object Number: 12852 Size: SH
  2. Remove the throttle body attaching studs.

    3. Object Number: 12853 Size: SH
  3. Remove the throttle body.
  4. Remove the throttle body to upper intake manifold gasket.
  5. Discard the throttle body to upper intake manifold gasket.

    6. Object Number: 480559 Size: SH
  6. Remove the water outlet studs.
  7. Remove the water outlet (1 or 2).
  8. Remove the engine coolant thermostat.

    9. Object Number: 480563 Size: SH

    Important: Note the position and direction of the exhaust gas recirculation (EGR) valve before removal. It is possible to improperly install the EGR valve 180 degrees from the original position.

  9. Remove the exhaust gas recirculation (EGR) valve bolts.

    10. Some applications will not have an EGR valve.


    Object Number: 480565 Size: SH

    Notice: The Linear EGR valve is an electrical component. DO NOT soak in any liquid cleaner or solvent because damage may result.

  10. Remove the EGR valve and the EGR valve gasket from the lower intake manifold.
  11. Discard the EGR valve gasket.

    12. Object Number: 480566 Size: SH
  12. Remove the engine coolant temperature (ECT) sensor plug (1) or the ECT sensor (2) from the front of the lower intake manifold, if equipped.

    13. Object Number: 480561 Size: SH
  13. Remove the studs and the ignition coil.

    14. Object Number: 480562 Size: SH
  14. Remove the manifold absolute pressure (MAP) sensor.
  15. Remove the MAP sensor seal from the MAP sensor.
  16. Discard the MAP sensor seal.

    17. Object Number: 334517 Size: SH
  17. Remove the fuel pipe bolt (4).
  18. Remove the fuel pipe retainer nuts (1).
  19. Remove the fuel pipe retainer (2).
  20. Remove the fuel pipe (3).
  21. Remove and discard the fuel seal retainers (5).
  22. Remove and discard the fuel seals (6), yellow O-rings.
  23. Remove and discard the spacer rings (7), flat washers.
  24. Remove and discard the fuel seals (8), black O-rings.

    25. Object Number: 334511 Size: SH
  25. Remove the studs and the evaporative emission (EVAP) canister purge solenoid valve.
  26. Remove the nut and the engine wiring harness bracket.

    27. Object Number: 334513 Size: SH
  27. Remove the upper intake manifold attaching studs.
  28. Remove the upper intake manifold.
  29. Remove the upper intake manifold to lower intake manifold gasket.
  30. Discard the upper intake manifold to lower intake manifold gasket.

    31. Object Number: 802242 Size: SH
  31. Remove the fuel meter body seal and discard.

    32. Important: The injectors may require increased effort when removing.

  32. Remove the 6 injectors from the lower intake manifold bores.

    33. Important: During the removal of the fuel injector assembly, the retainers that hold the injectors into the intake manifold may become worn. This is OK. Upon installation of the upper intake manifold the injectors will remain fully seated, thus keeping them from backing out of the lower intake manifold.

  33. Remove the fuel meter body.

    34. Important: Discard the old fuel meter body bracket and install a new bracket when converting from SFI (L35) to MFI (LU3) fuel systems.

  34. Remove the bolt and the fuel meter body bracket.