Installation Procedure

IMPORTANT: Use special anti-seize compound on the HO2S threads. The compound consists of graphite suspended in fluid and glass beads. The graphite burns away, but the glass beads remain, making the sensor easier to remove. New service sensors already have the compound applied to the threads. If you remove an oxygen sensor and if for any reason you must install the same oxygen sensor, apply the anti-seize compound to the threads before reinstallation.

Fig 1: View Of HO2S - Position 1

Courtesy of GENERAL MOTORS CORP.

Coat the threads of the HO2S with the anti-seize compound P/N 5613695, or equivalent if necessary.

NOTE: Refer to Component Fastener Tightening Notice in Cautions and Notices.

Using the J 39194-B , install the HO2S into the exhaust manifold. See Special Tools .
Tighten: Tighten the HO2S to 42 N.m (31 lb ft).

Fig 2: View Of ECT Sensor, Fuel Injector, Ignition Coil & HO2S Engine Wiring Harness Electrical Connectors

Courtesy of GENERAL MOTORS CORP.

Connect the HO2S electrical connector (5) to the following:
- The engine wiring harness electrical connector
- The camshaft cover