GM Service Manual Online
For 1990-2009 cars only

Intake Manifold Removal L65-CMT


    Object Number: 53790  Size: SH
  1. Disconnect the Intake Air Temperature (IAT) sensor electrical connector.
  2. Remove the IAT sensor.

  3. Object Number: 72261  Size: SH
  4. Disconnect the Manifold Absolute Pressure (MAP) sensor electrical connector.
  5. Remove the MAP sensor retaining bolts.
  6. Remove the MAP sensor.
  7. Remove the gasket.

  8. Object Number: 72272  Size: SH
  9. Disconnect the glow plug relay electrical connectors.

  10. Object Number: 72276  Size: SH
  11. Remove the glow plug relay retaining nuts.
  12. Remove the glow plug relay.

  13. Object Number: 72263  Size: SH
  14. Disconnect the vacuum harness hose connectors.
  15. Remove the vacuum harness.
  16. Remove the vacuum solenoid retaining bolt(s).

  17. Object Number: 72266  Size: SH
  18. Remove the vacuum solenoid(s).
  19. Remove the vacuum solenoid mounting bracket retaining nuts.
  20. Remove the vacuum solenoid mounting bracket.

  21. Object Number: 68321  Size: SH
  22. Remove the upper intake manifold retaining bolts.
  23. Remove the upper intake manifold.
  24. Remove the O-ring from the upper intake manifold.
  25. Remove the gaskets.

  26. Object Number: 53797  Size: SH
  27. Loosen the Crankcase Depression Regulator (CDR) valve vent hose clamp at the CDR valve.
  28. Remove the CDR valve vent hose from the CDR valve.
  29. Remove the CDR valve vent hose clamp from the CDR valve vent hose.
  30. Remove the CDR valve from the valve rocker arm cover. Pull upwards while twisting/rocking CDR valve.
  31. Remove the fuel injection feed pipe mounting bracket retaining nuts.
  32. Remove the fuel injection feed pipe mounting brackets.
  33. Remove the fuel injection feed pipes.

  34. Object Number: 68323  Size: SH
  35. Remove the intake manifold bolts.
  36. Remove the intake manifolds.
  37. Remove the gaskets.