Lower Intake Manifold Assemble

1. Apply sealant GM P/N 12345493 to the end of a new intake manifold coolant pipe.
2. Install the intake manifold coolant pipe using the Intake Manifold Coolant Pipe Installer.
3. Lightly tap the intake manifold coolant pipe into the bore of the lower intake manifold.
4. Apply sealer GM P/N 1052080 to the threads of the engine coolant temperature sensor.
5. Install the engine coolant temperature sensor. Tighten the engine coolant temperature sensor to 23 Nm (17 ft. lbs.). See Cooling System.
6. Apply sealer GM P/N 1052080 to the threads of the heater inlet pipe nipple.
7. Install the heater inlet pipe nipple. Tighten the heater inlet pipe nipple to 30 Nm (22 ft. lbs.).
8. Install the thermostat. See Cooling System.
9. Install the coolant outlet.
10. Install the coolant outlet assembly bolts. Tighten the coolant outlet assembly bolts to 25 Nm (18 ft. lbs.).