Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
1. If installing the old sensor, coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the ECT sensor (1).
Tighten
Tighten the sensor to 20 N.m (15 lb ft).
3. Connect the ECT sensor electrical connector.
4. Fill the cooling system, if necessary.
