Installation

1. Install the gaskets to the cylinder head with the port blocking plates facing the rear of the engine and This Side Up stamping facing up.





2. Install RTV to the front and the rear sealing surfaces on the block. Apply a 5 mm (0.067 in) bead of RTV GM P/N 12346192 or equivalent to the front and the rear of the block. Extend the bead 13 mm (0.50 inch) up each cylinder head to seal and retain the gaskets.





3. Install the lower intake manifold to the engine. Apply sealer, GM P/N 12345382 or equivalent, to the lower intake manifold bolts.

Lower Intake Manifold Tightening Sequence:

4. Install the lower intake manifold bolts. Tighten the bolts in three steps:
a. Tighten the bolts on the first sequence to 3 Nm (27 inch lbs.)..
b. Tighten the bolts on the second sequence to 12 Nm (106 inch lbs.).
c. Tighten the bolts on the final sequence to 15 Nm (11 ft. lbs.).
5. Install the wiring harness connectors and brackets.
6. Install the upper radiator hose at the thermostat housing. Refer to Cooling System.
7. Install the heater hose at the lower intake manifold. Refer to Cooling System.
8. Install the coolant bypass hose. Refer to Heating and Air Conditioning.
9. Install the EGR valve. Refer to Powertrain Management.
10. Install the valve rocker arm cover.
11. Install the fuel supply and return lines at the rear of the lower intake manifold.
12. Install the wiring harness and brackets.
13. Install the cruise control cable (if equipped).
14. Install the throttle cable and bracket. Refer to Powertrain Management.
15. Install the transmission oil level indicator tube. Refer to Transmission and Drivetrain.
16. Install the EGR inlet tube, clamp, and bolt.
17. Install the PCV valve and vacuum hoses.
18. Install the power brake vacuum tube.
19. Install the generator and the bracket bolt, (if needed).
20. Install the air conditioning compressor and bracket. Refer to Heating and Air Conditioning.
21. Install the distributor. Note the relationship of the distributor housing and rotor made at disassembly.