Upper Intake Manifold Replacement
Intake Manifold Replacement - Upper
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the vacuum hoses from:
^ Evaporative emissions (EVAP) canister purge valve
^ Brake booster
3. Disconnect the electrical connectors from:
^ Exhaust gas recirculation (EGR) valve
^ Mass air flow (MAF) sensor
^ Electronic throttle control
^ EVAP canister purge valve
4. Remove the air cleaner intake duct.
5. Drain the cooling system.
6. Remove the left side spark plug wires from the spark plugs.
7. Remove these wiring harnesses from the retainers:
^ Camshaft position (CMP) sensor wiring harness
^ Left side spark plug wire harness
^ Engine wiring harness
8. Remove the ignition coil bracket with the coils.
9. Remove the EVAP canister purge solenoid valve.
10. Remove the manifold absolute pressure (MAP) sensor and the bracket.
11. Remove the EGR valve.
12. Remove the upper intake manifold bolts and the stud.
13. Remove the generator bracket.
14. Remove the upper intake manifold.
15. Remove the upper intake manifold gaskets.
16. If replacing the upper intake manifold, remove the throttle body.
17. Clean the upper intake gasket mating surfaces.
Installation Procedure
1. If removed, install the throttle body.
2. Install the upper intake manifold gaskets.
3. Install the upper intake manifold.
4. Apply Threadlocker GM P/N 12345382 (Canadian P/N 10953489) to the upper intake manifold bolt threads.
Notice: Refer to Fastener Notice in Service Precautions.
5. Install the upper intake manifold bolts and the stud.
^ Tighten the bolts and the stud to 25 Nm (18 ft. lbs.).
6. Install the generator bracket.
7. Install the EGR valve.
8. Install the MAP sensor bracket and the sensor.
9. Install the EVAP canister purge solenoid valve.
10. Install the ignition coil bracket with the coils.
11. Install these wiring harnesses to the retainers:
^ Engine wiring harness
^ Left side spark plug wire harness
^ CMP sensor wiring harness
12. Install the left side spark plug wires to the spark plugs.
13. Install the air cleaner intake duct.
14. Connect these electrical connectors:
^ EVAP canister purge valve
^ Electronic throttle control
^ MAF sensor
^ EGR valve
15. Install the vacuum hoses at:
^ Brake booster
^ EVAP canister purge valve
16. Connect the negative battery cable.
17. Fill the cooling system.