Sierra 1500 4WD V8-5.3L VIN Z Flex Fuel (2005)
2. Install the ECT sensor.
Tighten the sensor to 20 N.m (15 lb ft).
3. Connect the ECT sensor electrical connector (5).
4. Refill the cooling. Refer to Draining and Filling Cooling System (w/RPO HP2) Draining and Filling Cooling System (w/o RPO HP2) in Cooling
System.