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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 4.3L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Intake Manifold Disassemble

Intake Manifold Disassemble

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Accelerator Control Cable Bracket
    GM374902Courtesy of GENERAL MOTORS CORP.
  1. Remove the nuts, the studs, and the accelerator control cable bracket.
    2. Fig 2: View Of Throttle Body & Attaching Studs
    GM12852Courtesy of GENERAL MOTORS CORP.
  2. Remove the throttle body attaching studs.
    3. Fig 3: View Of Throttle Body & Gasket
    GM12853Courtesy 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.
    6. Fig 4: Engine Coolant Thermostat
    GM1562653Courtesy of GENERAL MOTORS CORP.
  6. Remove the water outlet studs.
  7. Remove the water outlet (309).
  8. Remove the engine coolant thermostat.
    9. Fig 5: ECT Sensor & Plug
    GM480566Courtesy of GENERAL MOTORS CORP.
  9. Remove the engine coolant temperature (ECT) sensor plug (1) or the ECT sensor (2) from the front of the lower intake manifold, if equipped.
    10. Fig 6: Identifying Ignition Coil Studs & Ignition Coil
    GM480561Courtesy of GENERAL MOTORS CORP.
  10. Remove the studs and the ignition coil.
    11. Fig 7: MAP Sensor
    GM480562Courtesy of GENERAL MOTORS CORP.
  11. Remove the manifold absolute pressure (MAP) sensor.
  12. Remove the MAP sensor seal from the MAP sensor.
  13. Discard the MAP sensor seal.
    14. Fig 8: Fuel Pipes & Seals
    GM1549036Courtesy of GENERAL MOTORS CORP.
  14. Remove the fuel pipe bolt (509).
  15. Remove the fuel service port cap (751) and schreder valve (752), if required.
  16. Remove the fuel pipe retainer nuts (510).
  17. Remove the fuel pipe retainer (753).
  18. Remove the fuel pipe (700, 749).
  19. Remove the fuel pipe plug (750), if required.
  20. Remove and discard the fuel seal retainers (511).
  21. Remove and discard the fuel seals (512), yellow O-rings.
  22. Remove and discard the spacer rings (513), flat washers.
  23. Remove and discard the fuel seals (514), black O-rings.
    24. Fig 9: Purge Solenoid & Nut
    GM1503010Courtesy of GENERAL MOTORS CORP.
  24. Remove the studs and the evaporative emission (EVAP) canister purge solenoid valve.
  25. Remove the nut and the engine wiring harness bracket.
    26. Fig 10: Identifying Upper Intake Manifold Attaching Studs
    GM869159Courtesy of GENERAL MOTORS CORP.
  26. Remove the upper intake manifold attaching studs.
  27. Remove the upper intake manifold.
  28. Remove the upper intake manifold to lower intake manifold gasket.
  29. Discard the upper intake manifold to lower intake manifold gasket.
    30. Fig 11: Injectors At Lower Intake Manifold Bores
    GM859867Courtesy of GENERAL MOTORS CORP.
    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 be held fully seated, thus keeping them from backing out of the lower intake manifold.
  30. Remove the fuel meter body seal and discard.
  31. Remove the 6 injectors from the lower intake manifold bores.
  32. Remove the fuel meter body.
  33. Remove the bolt and the fuel meter body bracket.
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