Express 1/2 Ton Van V8-5.7L VIN R (1999)
4. Remove the HO2S using a J 39194 Oxygen Sensor Wrench.
INSTALLATION PROCEDURE
IMPORTANT: A special anti-seize compound is used on the Heated Oxygen Sensor (HO2S) threads. The compound consists of liquid graphite and
glass beads. The graphite tends to burn 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 engine and if for any reason it is to be reinstalled, the threads must
have anti-seize compound applied before the reinstallation.
1. Coat the threads of the oxygen sensor with anti-seize compound GM P/N 5613695 or the equivalent if necessary.
NOTE: Refer to Component Tightening Notice in Service Precautions.
2. Install the HO2S using a J 39194 Oxygen Sensor Wrench.
Tighten
Tighten the HO2S to 42 N.m (31 lb ft).
