Canyon 4WD V8-5.3L (2009)
Caution: Refer to Excessive Force and Oxygen Sensor Caution (See: Service Precautions/Excessive Force and Oxygen Sensor Caution).
3. Remove the HO2S (2).
Installation Procedure
Note: A special anti-seize compound is used on the 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 exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize
compound applied before the reinstallation.
1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
Caution: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking
compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these
coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect
the operation of the component. Use the correct torque specification when installing components in order to avoid damage.
