GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1591858  Size: SH
  1. Partially drain the cooling system. Refer to Cooling System Draining and Filling.
  2. Disconnect the engine wiring harness electrical connector (6) from the engine coolant temperature (ECT) sensor.

  3. Object Number: 1713085  Size: SH
  4. Remove the ECT.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1713085  Size: SH
  1. Install the ECT.
  2. Tighten
    Tighten the sensor to 20 N·m (15 lb ft).


    Object Number: 1591858  Size: SH
  3. Connect the engine wiring harness electrical connector (6) to the ECT sensor.
  4. Fill the cooling system as needed. Refer to Cooling System Draining and Filling.