GM Service Manual Online
For 1990-2009 cars only

Intake Manifold Removal Upper

  1. Remove the right spark plug wires. Set the wires aside.
  2. Remove the manifold vacuum source.

  3. Object Number: 36609  Size: SH
  4. Remove the EGR outlet pipe from the intake manifold.
  5. Remove the coolant outlet housing and thermostat. Refer to Coolant Outlet Housing and Thermostat Removal .
  6. Notice: The two bolts which fasten the lower intake manifold to the cylinder head are accessible only after the upper intake is removed. The bolts are located in the right front and left rear corners of the lower intake manifold. Remove the upper intake manifold to service the lower intake.


    Object Number: 36624  Size: SH
  7. Remove the throttle body.

  8. Object Number: 36631  Size: SH
  9. Remove the fuel rail.

  10. Object Number: 36634  Size: SH
  11. Remove the upper intake manifold bolts.
  12. Remove the upper intake manifold.

Intake Manifold Removal Lower

    Notice: The two bolts which fasten the lower intake manifold to the cylinder head are accessible only after the upper intake is removed. The bolts are located in the right front and left rear corners of the lower intake manifold. Remove the upper intake manifold to service the lower intake.

  1. Remove the upper intake manifold. Refer to Intake Manifold Removal .

  2. Object Number: 50046  Size: SH
  3. Remove the lower intake manifold bolts.
  4. Remove the lower intake manifold.