Yukon XL 2500 2WD V8-8.1L VIN G (2004)
1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the HO2S (2).
Tighten the sensor to 42 N.m (31 lb ft).
3. Connect the HO2S electrical connector.
4. Connect the CPA retainer.
5. Lower the vehicle.
