Express 2500 V8-6.6L DSL Turbo (2010)
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (See: Maintenance/Vehicle Lifting/Service and Repair).
2. Disconnect the exhaust temperature sensor (2) electrical connector from the engine wiring harness electrical connector (1).
3. Remove the exhaust temperature sensor.
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.
1. 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.