2009 GMC Envoy Oxygen Sensor

Remove the oil fill cap, remove the oil pan drain plug and drain the oil into a suitable container, remove the Oil Filter using a suitable wrench, and inspect the old oil filter to ensure the filter seal is not left on the engine block.

Remove the bolts that retain the Radiator support diagonal brace, and the radiator support diagonal brace from the vehicle.

Remove the resonator assembly, remove the evaporative emission (EVAP) canister purge line from the Throttle Body, disconnect the throttle body electrical connector, remove the throttle body assembly retaining bolts, remove the throttle body assembly and the gasket from the intake manifold, and clean the gasket surface.