Installation Procedure

WARNING: This page is about a different variant/trim than selected.

NOTE: Refer to Fastener Notice.

Fig 1: View Of HO2S - Bank 1, Sensor 1

Courtesy of GENERAL MOTORS CORP.

Install the oxygen sensor in the exhaust manifold.
Tighten: Tighten the heated oxygen sensor (HO2S) to 42 N.m (31 lb ft).
Lower the vehicle.

Fig 2: View Of HO2S Electrical Connector - Bank 1, Sensor 1

Courtesy of GENERAL MOTORS CORP.

Route and attach the wiring as noted in disassembly.
Connect the oxygen sensor electrical connector to the engine wiring harness connector at the rear of the right head.
Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .