Envoy 2WD V8-5.3L VIN P (2004)
4. 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 in Service Precautions.
IMPORTANT: If the HO2S sensor is connected to the main wiring harness during installation. Rotate the HO2S sensor several turns
counterclockwise before threading the HO2S sensor into the catalytic converter. This action of initially reverse winding of the pigtail wires will
prevent a condition where the HO2S sensor pigtail wires become severely twisted or binding once the HO2S sensor is installed into the catalytic
converter.
5. Install the HO2S (2).
Tighten
Tighten the sensor to 42 N.m (31 lb ft).
