Installation Procedure

WARNING: This page is about a different car, the 2005 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Removing/Installing Heated Oxygen Sensor Bank 1 Sensor 2

Courtesy of GENERAL MOTORS CORP.

Apply a small amount of anti-seize compound SA P/N 21485279, or equivalent, to the threads of the heated sensor 2.
Install the bank 2 heated oxygen sensor 2 using the J 39194-C .
Tighten: Tighten the oxygen sensor (lower exhaust pipe) to 45 N.m (33 lb ft).
Lower the vehicle.
Connect the bank 2 heated oxygen sensor 2 harness connector. Make sure the locking tab is in the full closed position.
Start the engine and make sure no exhaust leaks exist.