Installation Procedure

NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.

NOTE: Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.

Fig 1: Identifying ECT Sensor Harness Connector

Courtesy of GENERAL MOTORS CORP.

Coat the sensor threads with sealer GM P/N 1050805, or equivalent.
Install the ECT sensor (1).
Tighten: Tighten the ECT sensor to 20 N.m (15 lb. ft.).
Connect the ECT sensor harness connector.
Refill the coolant system. Refer to Draining and Filling Cooling System .