Lower Intake Manifold

LOWER INTAKE MANIFOLD





Disassemble
1. Rocker cover studs (196).
2. Thermostat housing bolts (146).
3. Thermostat housing (147) and gasket.
4. Thermostat (148).
5. Engine coolant temperature sensor (145).
6. Heater inlet pipe nipple (149).


Clean
^ Intake manifold gasket surfaces.
^ Injector bores.
^ Intake manifold bolts and studs.


Assemble

1. Heater inlet pipe nipple (149).
Apply teflon sealant to threads of pipe nipple (149).
Tighten Pipe nipple (149) to 14 N.m (124 lb. in.).

2. Engine coolant temperature sensor (145).
Apply teflon sealant GM p/n 1052080 to threads of sensor (145).
Tighten Sensor (145) to 13 Nm (115 lb. in.).

3. Thermostat (148).
4. Thermostat housing gasket and housing (147).
5. Thermostat housing bolts (146).
Tighten Thermostat housing bolts (146) to 21 N.m (15 lb. ft.).

6. Rocker cover studs (196).
Tighten Studs (196) to 12 Nm (106 lb. in.).