Installation Procedure

Fig 1: View Of HO2S At Exhaust Manifold

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: A special anti-seize compound is used on the oxygen sensor threads. This 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 already have the compound applied to the threads. If a sensor is removed from any engine and if for any reason it is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.

Coat the threads of the HO2S1 will an anti-seize compound, if needed.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the HO2S1 to the exhaust manifold.
Tighten: Tighten the oxygen sensor to 42 N.m (31 lb ft) .
Connect the HO2S1 connector.
Connect the negative battery cable.