OEM Chevrolet HHR Thermostat Housing

Chevrolet HHR Thermostat Housing Parts Questions & Experts Answers

• Thermostat Housing, Green Line
  12597172
  Q: How to replace the thermostat housing for RPO L61 on Chevrolet HHR?

  A:

  Before starting Thermostat housing replacement for rpo l61 vehicles begin by draining the coolant system through the water pump drain before tightening the drain bolt. Before proceeding drop the vehicle or unplug the engine coolant temperature (ECT) sensor electrical connector for automatic transaxles or manual transaxles whenever possible. When required you will need to remove the ect sensor followed by relocating the radiator outlet hose clamp before extracting the hose from the Thermostat housing. Begin by removing the nuts from the air cleaner bracket and continue with the Exhaust Heat Shield studs before extracting the Exhaust Heat Shield. Reposition all heater hose clamps and disconnect ventilation hoses from their corresponding pipes on the Thermostat housing then lift the vehicle upward. Remove Thermostat housing bolts (3, 4) before twisting the water transfer pipe to separate it from the water pump. You should remove the water transfer pipe from the Thermostat housing before discarding both o-ring seals. Extract the Thermostat housing cover bolts and cover and the Thermostat before discarding the applicable o-ring seal from the Thermostat housing. Clean all material and thread sealant from the engine Coolant Temperature Sensor and bolt holes when using the same housing. Place a new o-ring seal on the recess groove before installing the Thermostat housing cover bolts to 10 nm (89 inch lbs.) and attaching the Thermostat when needed. After putting the new Thermostat housing to engine gasket into position carefully fit the assembly and apply a light layer of coolant to the water feed pipe seals before adding new o-ring seals to the pipe ends. Position the water pipe next to the water pump then install the water feed o-ring seal afterward position the Thermostat housing against the engine. Screw on Thermostat housing bolts (3, 4) to 10 nm (89 inch lbs.) before lowering the vehicle. Finally, install the heater inlet and outlet hoses to their respective pipes on the Thermostat housing while positioning clamps correctly. Use the Exhaust Heat Shield by tightening the studs above 22 nm (16 ft. Lbs.). Reinstall the air cleaner bracket after tightening its nuts at 10 nm (89 inch lbs.). After reinstalling the radiator outlet hose onto the Thermostat housing, position theclamp and place the ect sensor in position if necessary. After hooking up the ect sensor electrical connector for manual systems the technician must install the ho2s electrical connector clip on the Thermostat housing. The first step is maintaining vehicle levelness before adding coolant solution and checking drain controls at both radiator and water pump locations for closure. The repair can be verified through a leak inspection after lowering the vehicle.