Lucerne V6-3.9L (2009)
Installation Procedure
Note: A special anti-seize compound is use on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burns
away, but the glass beads remain, making the sensor easier to remove. New or service replacement sensors already have the compound applied to the
threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize
compound applied before reinstallation.
1. If re-installing the old sensor, coat the threads with the anti-seize compound P/N 12377953, or equivalent.
Caution: Refer to Fastener Caution (See: Service Precautions/Vehicle Damage Warnings/Fastener Caution).
2. Install the HO2S to the catalytic converter.
Tighten the sensor to 42 Nm (31 lb ft).
3. Connect the HO2S electrical connector (3).
