Avalanche 1500 4WD V8-5.3L (2007)
1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
NOTE: Refer to Component Fastener Tightening Notice.
2. Install the HO2S (3).
Tighten the sensor to 42 N.m (31 lb ft).
3. Install the HO2S electrical connector clip to the engine harness clip (4).
4. Connect the engine wiring harness electrical connector (2) to the HO2S electrical connector.
5. Install the CPA retainer (3).
6. Lower the vehicle.
