Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Canyon and 2009 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.

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

CAUTION: 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 engine wiring harness electrical connector

Courtesy of GENERAL MOTORS CORP.

If installing the original sensor or a NEW sensor without sealant, apply thread sealer GM P/N 12346004 (Canadian P/N 10953480) or equivalent.
Thread the ECT sensor into the cylinder head by hand.

CAUTION: Refer to Component Fastener Tightening Caution .

Using the J 45861 (2), tighten the ECT sensor. See Special Tools .
Tighten: Tighten the sensor to 14 N.m (10 lb ft).
Install the ECT sensor electrical connector to the camshaft cover.
Connect the engine wiring harness electrical connector (1) to the ECT sensor electrical connector.
Refill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac N Fill) .