Removal Procedure

CAUTION: The exhaust temperature sensor and exhaust pressure differential sensor line fittings may be difficult to remove when the engine exhaust system temperature is below 48°C (120°F). Excessive force may damage the threads in the exhaust manifold or exhaust pipe.

Fig 1: Identifying Exhaust Temperature Sensor (2) Electrical Connector

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Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Disconnect the exhaust temperature sensor (2) electrical connector from the engine wiring harness electrical connector (1).
Fig 2: Identifying Exhaust Temperature Sensor
Courtesy of GENERAL MOTORS CORP.

Remove the exhaust temperature sensor.