Removal Procedure

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

Fig 1: View Of HO2S Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Disconnect the heated oxygen sensor (HO2S) electrical connector (3) from the engine wiring harness connector (1).

NOTE: Refer to Excessive Force and Oxygen Sensor Notice in Cautions and Notices.

Fig 2: View Of HO2S - Position 2

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Using the J 39194-B , remove the HO2S from the catalytic converter. See Special Tools .