CTS V6-3.2L VIN N (2003)
Intake Manifold: Service and Repair
Intake Plenum Replacement
Intake Plenum Replacement
Removal Procedure
1. Remove the intake plenum air inlet hose clamps and hoses from the throttle body.
2. Disconnect the fuel pressure regulator atmospheric vent tube from the bottom of the throttle body.
3. Remove the bolts securing the throttle body to the intake plenum.
4. Remove the throttle body from the intake plenum and crankcase vent adapter, allowing it to be supported by the throttle body inlet heater hose.
5. Remove the throttle body O-ring seals.
6. Remove the 3 bolts securing the crankcase vent adapter to the intake plenum.
7. Lift the crankcase vent adapter from the intake plenum, and position aside.
