Removal Procedure

Fig 1: Locating HO2S Sensor Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Remove the connector position assurance (CPA) retainer.
Disconnect the engine wiring harness electrical connector (1) from the heated oxygen sensor (HO2S) electrical connector.
Remove the HO2S sensor electrical connector from the camshaft cover.

Fig 2: View Of HO2S

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Excessive Force and Oxygen Sensor Notice .

Using the J 39194-B remove the HO2S from the exhaust manifold. See Special Tools .