Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

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: View Of Exhaust Temperature Sensor

Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Fastener Caution .

Install the exhaust temperature sensor.
Tighten: Tighten the sensor to 45 N.m (33 lb ft).

Fig 2: View Of Chassis Wiring Harness Electrical Connector & Exhaust Differential Pressure Sensor

Courtesy of GENERAL MOTORS CORP.

Connect the exhaust temperature sensor (3) electrical connector to the chassis wiring harness electrical connector (4).
Lower the vehicle. Refer to Lifting and Jacking the Vehicle .