OEM 2009 Chevrolet Impala Thermostat

2009 Chevrolet Impala Thermostat Parts Questions & Experts Answers

• Q: How to replace the engine coolant thermostat for LZE-3.5L Flex Fuel, LZ4-3.5L Gas, or LZG-3.9L Flex Fuel engines on 2009 Chevrolet Impala?

  A: Engine coolant Thermostat replacement for lze-3.5l flex fuel and lz4-3.5l gas and lzg-3.9l flex fuel requires a drainage of the cooling system. Begin by taking out the air cleaner outlet duct followed by moving the radiator outlet hose clamp towards the Thermostat Housing. After that remove the hose connecting to the Thermostat Housing (3.5L system shown with 3.9L similar). Start by removing the Thermostat Housing bolt/stud before extracting the Thermostat Housing together with its gasket and finally removing the Thermostat. Gasket surfaces require cleaning before the new Thermostat installation. After placing a new gasket and Thermostat Housing onto the engine block you must install the Thermostat Housing bolt/stud and tighten it to 10 nm (89 lb in). Replace the radiator outlet hose onto the Thermostat Housing (3.5L shown, 3.9L similar) and apply hose clamp pressure directly at the Thermostat Housing. After ducting the air cleaner outlet position complete your cooling system fluid levels and check for any fluid leakage in the system.