Installation Procedure

IMPORTANT: A special anti-seize compound is used on the oxygen sensor 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 oxygen sensor with anti-seize compound Saturn P/N 21485279, if necessary.

NOTE: Refer to Fastener Notice in Cautions and Notices.

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

Fig 1: Oxygen Sensor & Harness Connector

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold heat shield. Refer to Exhaust Manifold Replacement (LSJ) or Exhaust Manifold Replacement (L61) in Engine Exhaust.

Fig 2: Removing & Installing Exhaust Manifold Heat Shield

Courtesy of GENERAL MOTORS CORP.