Removal Procedure

IMPORTANT: The heated oxygen sensor (HO2S) 2 may be difficult to remove when engine temperature is less than 48°C (120°F). Excessive force may damage the threads in the exhaust pipe.

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
Disconnect the heated oxygen sensor (HO2S) 2 electrical connector.
Use the J 39194-B to remove the HO2S 2. See Special Tools and Equipment .

Fig 1: View Of HO2S 2

Courtesy of GENERAL MOTORS CORP.