54. Intake Manifold Assemble

1. Install the fuel meter body (5) into the lower intake manifold (6).
2. Install the 8 poppet nozzles into. the lower intake manifold (6).
3. Inspect the poppet nozzles in order to ensure that the poppet nozzles are firmly seated and locked in the lower intake manifold bores.
4. Install the NEW fuel meter body seal (4) into the groove on the fuel meter body (5).
5. Install the NEW upper intake manifold to lower intake manifold gasket (3) into the groove of the upper intake manifold (2).
6. Install the upper intake manifold (2) onto the lower intake manifold (6).

Notice: Refer to Fastener Notice in Service Precautions.

7. If reusing the fasteners, apply threadlock GM P/N 12345382 or equivalent to the threads of the upper intake manifold attaching studs (1).
8. Install the upper intake manifold studs (1).
8.1. Tighten the upper intake manifold studs on the first pass to 5 Nm (44 inch lbs.).
8.2. Tighten the upper intake manifold studs on the second pass to 10 Nm (89 inch lbs.).





9. If reusing the fasteners, apply threadlock GM P/N 12345382 or equivalent to the threads of the Evaporative Emission (EVAP) canister purge solenoid valve studs.
10. Install the EVAP canister purge solen6id valve and studs.
- Tighten the EVAP canister purge solenoid valve studs to 10 Nm (89 inch lbs.).
11. Install the engine wiring harness bracket and nut.
- Tighten the engine wiring harness bracket nut to 12 Nm (106 inch lbs.).





12. Install the NEW fuel seals (8) (black O-rings) into the fuel meter body.
13. Install the NEW spacer rings (7) (flat washers) into the fuel meter body.
14. Install the NEW fuel .5eals (6) (yellow O-rings) into the fuel meter body.
15. Install the NEW fuel seal retainers (5) into the fuel meter body,
16. Install the fuel pipe (3) into the fuel meter body.
17. Install the fuel pipe retainer (1) and the nuts (2).
18. If reusing the fastener, apply threadlock GM P/N 12345382 or equivalent to the threads of the fuel pipe bolt (4).
19. Install the fuel pipe bolt (4).
19.1. Tighten the fuel pipe retainer nuts (2) to 3 Nm (27 inch lbs.).
19.2. Tighten the fuel pipe bolt (4) to 6 Nm (53 inch lbs.).





20. Install a NEW Manifold Absolute Pressure (MAP) sensor seal onto the MAP sensor.
21. Apply a small amount (1 drop) of clean engine oil to the MAP sensor seal.
22. Install the MAP sensor into the upper intake manifold.





23. Install the ignition coil and studs.
- Tighten the ignition coil studs to 12 Nm (106 inch lbs.).





24. If reusing the Engine Coolant Temperature (ECT) sensor, apply sealant GM P/N 12346004 or equivalent to the threads of the ECT sensor.
25. Install the ECT sensor into the front of the lower intake manifold.
- Tighten the ECT sensor to 20 Nm (15 ft. lbs.).

Important: The EGR valve must be installed in the original orientation.





26. Install a NEW Exhaust Gas Recirculation (EGR) valve gasket and the EGR valve.





27. Install the EGR valve bolts.
27.1. Tighten the EGR valve bolts on the first pass to 10 Nm (88 inch lbs.).
27.2. Tighten the EGR valve bolts on the final pass to 30 Nm (22 ft. lbs.).





28. Install the engine coolant thermostat.
29. Install the water outlet.
30. Install the water outlet studs.
- Tighten the water outlet studs to 25 Nm (18 ft. lbs.).





31. Install a NEW throttle body gasket into the groove in the upper intake manifold.
32. Install the throttle body onto the upper intake manifold.
33. If reusing the fasteners, apply threadlock GM P/N 12345382 or equivalent to the threads of the throttle body attaching studs.
34. Install the throttle body attaching studs.
- Tighten the throttle body attaching studs to 9 Nm (80 inch lbs.).





35. Install the accelerator control bracket, the bolt, and the nut.
- Tighten the accelerator control bracket bolt and the nut to 12 Nm (106 inch lbs.).