85. Intake Manifold Installation - Upper

1. Install the upper intake manifold gaskets.
2. Apply threadlock GM P/N 12345382 or equivalent to the threads of the intake manifold bolts.





3. Install the upper intake manifold.

Notice: Refer to Fastener Notice in Service Precautions.

4. Install the upper intake manifold bolts and studs.
^ Tighten the upper intake manifold bolts and studs to 25 Nm (18 ft. lbs.).

5. Install the spark plugs.
^ Tighten the spark plugs to 27 Nm (20 ft. lbs.).





6. Install the electronic ignition control module.
7. Install the electronic ignition control module nuts and bolts.

^ Tighten the electronic ignition control module nuts and bolts to 25 Nm (18 ft. lbs.).

8. Install the spark plug wires.





9. Install the EGR valve pipe and gasket.
^ Tighten the EGR valve pipe to 25 Nm (18 ft. lbs.).

10. Install the EGR valve and gasket.
11. Install the EGR valve bolts.
^ Tighten the EGR valve bolts to 25 Nm (18 ft. lbs.).





12. Install the MAP sensor.
13. Install the MAP sensor bolts.
^ Tighten the MAP sensor bolts to 5 Nm (44 inch lbs.).

14. Connect the MAP sensor electrical connector.





15. Install the vacuum lines to the upper intake manifold.