2005 Buick Century Oxygen Sensor

You need to position the oil drain pan under the engine oil drain plug, remove the engine oil drain plug, clean and inspect the engine oil drain plug, repair or replace it if necessary, clean and inspect the engine oil drain plug sealing surface on the oil pan, repair or replace oil pan if necessary, remove the Oil Filter and clean and inspect the oil filter sealing area on the engine block, repair or replace if necessary.

You need to install the Oil Pump to the valve body and the oil pump bolts, connect the electrical connectors to the solenoid valves, the TFP manual valve position switch, and the temperature sensor and install the case side cover.

You need to coat the ends of the Pushrods with pre-lube GM P/N 1052367 (Canadian P/N 992869) or the equivalent and install the pushrods and the rocker arms to their original location, the new valve rocker arm bolts and the left or the right valve rocker arm covers.