Express 3500 V8-6.6L DSL Turbo (2008)
Notice: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
1. If installing the old sensor(s), coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent.
Notice: Refer to Fastener Notice.
2. Install the appropriate ECT sensor(s) (1).
Tighten the sensor(s) to 20 N.m (15 lb ft).
3. Connect the engine wiring harness electrical connector(s) (1) to the appropriate ECT sensor(s).
4. Fill the cooling system, if necessary. Refer to Cooling System Draining and Filling (Static Fill) Cooling System Draining and Filling (Vac N Fill).
5. Install the intake manifold tube.
