Cobalt L4-2.4L (2007)
Thermostat Housing: Service and Repair
Engine Coolant Thermostat Housing Replacement (RPO LE5)
Removal Procedure
1. Remove the intake manifold cover.
2. Drain the cooling system. Refer to Draining and Filling Cooling System (2.0L (LSJ)) Draining and Filling Cooling System (2.2L (L61), 2.4L
(LE5)) Draining and Filling Cooling System (GE 47716 Fill).
Important: A drain has been provided at the bottom of the water pump for engine block coolant drainage.
3. Drain the coolant from the engine block at the water pump drain. After the coolant has drained, tighten the drain bolt.
4. Lower the vehicle.
5. For access, reposition the underhood electrical center/junction block bracket. Refer to Underhood Electrical Center or Junction Block Bracket
Replacement.
6. If equipped with a automatic transaxle, perform the following steps, disconnect the engine coolant temperature (ECT) sensor electrical connector
(3).
7. Remove the heated oxygen sensor (HO2S) electrical connector clip from the thermostat housing.
