Your Oldsmobile Silhouette comes equipped with two Heated Oxygen Sensors (HO2S) to keep vehicle emissions under control. Once the sensors have passed their service life, emissions begin to increase, which may affect fuel consumption and engine performance as well.

Removing the Oxygen Sensor

Step 1

Start the engine and let it reach operating temperature to facilitate oxygen sensor removal (see Warnings).

Step 2

Turn off the engine.