Q: How to Replace the Thermostat Housing on a 3.6L LY7 or LLT Engine for Outlet on Cadillac SRX?
A: Remove some fluid from the cooling system as a first step to replace the Thermostat Housing on ly7 or llt (3.6L) engines through approved draining procedures. When replacing the Throttle Body on the llt engine you must remove it first. To proceed with the replacement start by removing the Thermostat Housing bolts after disconnecting the Radiator Hose from the thermostat. Thoroughly wipe the Thermostat Housing sealing surfaces while discarding both old seals before installation. Reposition the thermostat onto its housing after installing fresh seals into the Thermostat Housing. Close the thermostat with new bolts and secure them using torque settings reaching 10 nm (89 lb in). After installing the new thermostat, reattach its Radiator Hose to the outlet while the Throttle Body replacement becomes necessary for llt models. Another step of cooling system completion involves filling up its components.
Q: How to Replace the Thermostat Housing on LP1 and LY7 Engines on Cadillac CTS?
A: Begin the Thermostat Housing replacement on lp1 and ly7 engines by draining some amount of coolant from the system. Start by disconnecting both the Radiator Hose and surge tank inlet hose from the Thermostat Housing. First remove all bolts from the Thermostat Housing before you can take out the thermostat assembly to discard its seals. The Thermostat Housing receiving surfaces require cleaning treatment before new seals are installed for it. Refer the thermostat to its position and fasten it using bolts that require 10 n.m (89 lb in) torque strength. Connect the surge tank inlet hose and Radiator Hose back into the thermostat for the next step. The procedure concludes with filling the cooling system.
Q: How to Replace a Thermostat Housing (LC3) on Cadillac XLR?
A: The replacement of the Thermostat Housing (LC3) must begin with draining both engine cooling and charge air cooling systems. The supercharger assembly must be removed before you detach the supercharger belt tensioner and the supercharger idler pulley. You must remove the two coolant hoses and the Radiator Hose which connect to the Thermostat Housing. Begin by repositioning the lower bypass hose clamp before removing the bolts that connect the Thermostat Housing to the cylinder heads. Extract the housing with bypass hose, discarding the gaskets at this time. Disassembly of the Thermostat Housing may be required for cleaning followed by an inspection. Assemble the Thermostat Housing as needed and place new gaskets before tightening housing and bypass hose installation onto the vehicle with bolts torqued to 25 nm (18 lb ft). Reset the bypass hose clamp in its proper position before reinstalling both radiator and coolant hoses to the Thermostat Housing. The supercharger idler pulley and supercharger belt tensioner and supercharger assembly must be reinstalled. Add coolant to both the charge air cooling system and engine cooling system before searching for fluid leaks in the systems.