Installation Procedure

NOTE: Silicone based products will contaminate the HO2S. Use only a nickel based anti-seize compound that does not contain silicone.

Apply a small amount of anti-seize compound Saturn P/N 21485279, or equivalent, to the threads of the HO2S-1.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Fig 1: Oxygen Sensor & Harness Connector

Courtesy of GENERAL MOTORS CORP.

Install the HO2S-1 using the J 39194-C , or equivalent. See Special Tools .
Tighten: Tighten the oxygen sensor-to-exhaust manifold pipe to 45 N.m (33 lb. ft.).
Install the sensor harness and connector to the attachment clip.
Connect the HO2S-1 harness connector. Push in the connector until a click is heard and pull back to confirm a positive engagement.