Installation Procedure

NOTE: A special anti-seize compound is used in the sensor or line fittings threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor or line fitting easier to remove. New, or service replacement sensors or line fittings already have the compound applied to the threads. If the sensor or line fittings are removed from an exhaust component and if for any reason the sensor or line fitting are reinstalled, the threads must have anti-seize compound applied before reinstallation.

If reinstalling the old temperature sensor or differential pressor sensor line fittings, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.

Fig 1: Identifying Exhaust Temperature Sensor

Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Fastener Caution .

Install the exhaust temperature sensor and tighten to 45 N.m (33 lb ft).

Fig 2: Identifying Exhaust Temperature Sensor Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Connect the exhaust temperature sensor electrical connector (2) to the engine wiring harness electrical connector (1).
Lower the vehicle. Refer to Lifting and Jacking the Vehicle .