Intake Manifold Replacement

REMOVAL PROCEDURE

Caution: Refer to Battery Disconnect Caution in Service Precautions.

1. Disconnect the negative battery cable.
2. Raise the vehicle. Suitably support the vehicle.
3. Remove the front splash shield.
4. Drain the coolant.
5. Close the radiator drain cock.
6. Install the front splash shield.
7. Lower the vehicle.
8. Remove the supercharger.





9. Remove the thermostat housing.
10. Remove the EGR tube at the intake manifold.
11. Disconnect the electrical connection at the temperature sensor.





12. Remove the intake manifold.

INSTALLATION PROCEDURE

Important: In order to install the manifold, complete the following steps:
^ Use a suitable solvent in order to clean all oil from the cylinder block, the cylinder heads, and the intake manifold sealing surface.
^ Apply a GM approved sealer to the ends of the intake manifold seals.
^ Clean any adhesive compound from the intake manifold bolts and the bolt holes.
^ Apply a GM P/N 12345493 threadlocker to the intake manifold bolts.





1. Install the intake manifold.

Notice: Refer to Fastener Notice in Service Precautions.

2. Install the intake manifold bolts.
^ Tighten the intake manifold bolts in sequence to 15 Nm (11 ft. lbs.).

3. Install the electrical connector at the temperature sensor.
4. Install the EGR tube to the intake manifold.





5. Install the thermostat housing.
6. Install the supercharger.
7. Refill the coolant.
8. Connect the negative battery cable.