Removal Procedure

WARNING: This page is about a different variant/trim than selected.

NOTE: The oxygen sensor uses a permanently attached pigtail and connector. Do not remove the pigtail from the oxygen sensor. Damage to or removal of the pigtail connector could affect proper operation of the oxygen sensor.

NOTE: The use of excessive force may damage the threads in the exhaust manifold/pipe.

NOTE: Refer to Heated Oxygen Sensor (HO2S) Resistance Learn Reset Notice in Cautions and Notices.

IMPORTANT: The in-line connector and louvered end must be kept clear of grease, dirt or other contaminants. Avoid using cleaning solvents of any type. DO NOT drop or roughly handle the oxygen sensor (O2S).

IMPORTANT: The O2S may be difficult to remove when the engine temperature is less than 48°C (120°F).

Fig 1: Removing & Installing Exhaust Manifold Heat Shield

Courtesy of GENERAL MOTORS CORP.

Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Replacement (2.2L Engine) in Engine Exhaust.

Fig 2: Oxygen Sensor & Harness Connector

Courtesy of GENERAL MOTORS CORP.

Disconnect the O2S harness connector.
Remove the O2S.