Chevrolet 91171047 Thermostat,Engine Coolant 92Deg

You can Select Your Vehicle to check if 91171047 fits your vehicle.

To replace the thermostat, you should first disconnect the negative battery cable and drain the cooling system. Then, remove the air cleaner and locate the thermostat housing by following the upper radiator hose to the engine. Loosen the hose clamp and detach the hose from the fitting. Unplug the electrical connector for the engine cooling fan switch. Remove the bolts and detach the housing cover and bracket if equipped. Tap the cover with a soft-face hammer to loosen it, and then remove the thermostat. Thoroughly clean the sealing surfaces and install the new thermostat in the housing. Make sure the air bleed is positioned correctly and the spring end is directed into the engine. Install a new gasket over the thermostat, and then install the cover and bolts. Tighten the bolts to the specified torque. Reattach the hose to the fitting and tighten the hose clamp securely. Refill the cooling system, start the engine, and allow it to reach normal operating temperature. Finally, check for leaks and proper thermostat operation.