GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: Allow sufficient time for the engine to cool before removing the ECT sensor. A hot engine may cause an excessive coolant loss or a personal injury.

  1. Turn the ignition OFF.

  2. Object Number: 945424  Size: SH
  3. Remove the shielding from around the engine coolant temperature (ECT) sensor.
  4. Disconnect the ECT sensor electrical connector.

  5. Object Number: 1285193  Size: SH
  6. Remove the ECT sensor.

Installation Procedure


    Object Number: 1285193  Size: SH
  1. Install the ECT sensor.
  2. Tighten
    Tighten the sensor to 22 N·m (16 lb ft).


    Object Number: 945424  Size: SH
  3. Connect the ECT sensor electrical connector.
  4. Install the shielding around the ECT sensor.
  5. Inspect and fill the cooling system as necessary. Refer to Cooling System Draining and Filling .