Installation Procedure

IMPORTANT: A special anti-seize compound is used on the O2S threads. The compound consists of a liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will have the compound applied to the threads. If a sensor is removed and is to be reinstalled, the threads must have an anti-seize compound applied before installation.

Coat the threads of the O2S with anti-seize compound, if necessary.

Fig 1: Oxygen Sensor & Harness Connector

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the O2S.
Tighten: Tighten the O2S to 30 N.m (22 lb ft).
Connect the O2S harness connector.

Fig 2: Removing & Installing Exhaust Manifold Heat Shield

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold heat shield. Refer to Exhaust Manifold Replacement in Engine Exhaust.