Impala V8-5.3L VIN C (2006)
1. Coat the thread of the ECT sensor with sealer GM P/N 12346004 (Canadian P/N 10953480), or equivalent.
2. Install the ECT sensor.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the sensor to 20 N.m (15 lb ft).
3. Connect the ECT sensor electrical connector (1).
4. Refill the engine coolant. Refer to Draining and Filling Cooling System (LS4 Static Fill) Draining and Filling Cooling System (LZE, LZ4, LZ9
Static Fill) Draining and Filling Cooling System (9C1, 9C3 Static Fill) Draining and Filling Cooling System (LS4 GE 47716 Fill) Draining and
Filling Cooling System (LZE, LZ4, LZ9, 9C1, 9C3 GE 4771 Fill) in Cooling System. See: Engine, Cooling and Exhaust/Cooling System/Service
and Repair
