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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 465 (Engine Mechanical - 4.3L (Unit Repair)) >> Repair Instructions >> Intake Manifold Disassemble (L35)

Intake Manifold Disassemble (L35)

WARNING: This page is about a different car, the 2002 GMC Savana and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the nuts, the studs, and the accelerator control cable bracket.
    Fig 1: Accelerator Control Cable Bracket, Nuts & Studs
    G01689752Courtesy of GENERAL MOTORS CORP.
  2. Remove the throttle body attaching studs.
    Fig 2: Throttle Body Attaching Studs
    G01689753Courtesy of GENERAL MOTORS CORP.
  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.
    Fig 3: Throttle Body
    G01689754Courtesy of GENERAL MOTORS CORP.
  6. Remove the water outlet studs.
  7. Remove the water outlet (1 or 2).
  8. Remove the engine coolant thermostat.
    Fig 4: Water Outlet, Studs & Engine Coolant Thermostat
    G01689755Courtesy of GENERAL MOTORS CORP.

    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.

    Some applications will not have an EGR valve.

    Fig 5: EGR Valve Bolts
    G01689756Courtesy of GENERAL MOTORS CORP.
    NOTE: 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.
    Fig 6: EGR Valve & Gasket
    G01689757Courtesy of GENERAL MOTORS CORP.
  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.
    Fig 7: ECT Sensor & Plug
    G01689758Courtesy of GENERAL MOTORS CORP.
  13. Remove the studs and the ignition coil.
    Fig 8: Studs & Ignition Coil
    G01689759Courtesy of GENERAL MOTORS CORP.
  14. Remove the manifold absolute pressure (MAP) sensor.
  15. Remove the MAP sensor seal from the MAP sensor.
  16. Discard the MAP sensor seal.
    Fig 9: MAP Sensor & Seal
    G01689760Courtesy of GENERAL MOTORS CORP.
  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.
    Fig 10: Fuel Pipe Components
    G01689761Courtesy of GENERAL MOTORS CORP.
  25. Remove the studs and the evaporative emission (EVAP) canister purge solenoid valve.
  26. Remove the nut and the engine wiring harness bracket.
    Fig 11: EVAP Canister Purge Solenoid Valve, Nut & Engine Wiring Harness Bracket
    G01689762Courtesy of GENERAL MOTORS CORP.
  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.
    Fig 12: Upper Intake Manifold & Attaching Studs
    G01689763Courtesy of GENERAL MOTORS CORP.
  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.
    Fig 13: Fuel Meter Body, Seal & Poppet Nozzles
    G01689764Courtesy of GENERAL MOTORS CORP.
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