Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 1: Disconnecting/Connecting HO2S Electrical Connector

Courtesy of GENERAL MOTORS CORP.

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

Remove the connector position assurance (CPA) retainer.
Disconnect the heated oxygen sensor (HO2S) electrical connector (1).

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

Fig 2: Locating O2 Sensor

Courtesy of GENERAL MOTORS CORP.

Remove the HO2S (2).