Cobalt L4-2.2L (2008)
graphite will burn away but the glass beads will remain, making the sensor easier to remove. New or service sensors already have the compound applied
to the threads. If the sensor is removed and is to be reinstalled, the threads must be coated with an anti-seize compound before reinstallation.
1. If reinstalling the old HO2S, coat the threads with anti-seize compound, GM P/N 12377953 or Saturn P/N 24185279, or equivalent.
2. Carefully install the HO2S to the pipe.
Notice: Refer to Component Fastener Tightening Notice.
3. Using the J39194 or equivalent, tighten the HO2S.
Tighten the HO2S to 41 N.m (30 lb ft).
4. Install the HO2S electrical harness into position as noted before removal.
Important: Use care when securing the HO2S electrical harness into the channel on the exhaust heat shield, to not pinch the wires.
5. Carefully bend the edge of the channel (1) on the LH side of the exhaust heat shield inboard, just enough to secure the HO2S electrical harness in
the channel.
6. Connect the HO2S electrical connector (2).
7. Install the wheel drive shaft heat shield.
8. Lower the vehicle.
