You are watching: 2004 trailblazer coolant temperature sensor location
Left front of engine block near alternator that screwed into the head no specials tools just a deep socket. Below are the diagrams below to show you where the coolant temperature sensor is on both 6 and 8 cylinder engines. Check out the diagrams (Below). Please let us know what you find.
perform you have actually the 4.2L or the 5.3L engine?Because ns just captured you the end 6 as the engine I assumed you placed 8 so it is the location I offered the sensor for. The trailblazer has actually a inline 6 or V8 engine. If you have a 6 cylinder is a inline 6.
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ENGINE COOLANT TEMPERATURE (ECT) SENSOR instead of REMOVAL PROCEDURE NOTE: Use care when dealing with the coolant sensor. Damages to the coolant sensor will impact the operation of the fuel regulate system.1. Rotate the engine OFF. 2. Disconnect the an unfavorable battery terminal. CAUTION: describe Battery Disconnect fist in business Precautions. 3. Drainpipe coolant listed below the level of the ECT sensor. Describe Draining and Filling Cooling mechanism (Body Vin password 6)Draining and Filling Cooling device (Body Vin code 3) in Cooling System.4. Disconnect the ECT sensor electrical connector (1). 5. Remove the drive belt and also the generator.6. Closely remove the ECT sensor (1).INSTALLATION PROCEDURE NOTE: *Use treatment when taking care of the coolant sensor. Damages to the coolant sensor will affect the procedure of the fuel regulate system. *Replacement contents must it is in the correct part number for the application. Contents requiring the usage of the subject locking compound, lubricants, corrosion inhibitors, or sealants are identified in the company procedure. Some replacement components may come through these coatings already applied. Do not usage these coatings on components unless specified. These coatings can influence the final torque, i beg your pardon may influence the operation of the component. Usage the exactly torque specification once installing components in stimulate to prevent damage.1. If installing the original sensor or a new sensor without sealant, apply thread sealer P/N 12346004 or equivalent.2. Download the ECT sensor. NOTE: describe Fastener an alert in organization Precautions. Tighten Tighten the ECT sensor to 16 N.M (12 lb ft).3. Connect the ECT electrical connector (1). 4. Install the generator and also the drive belt. 5. Attach the an adverse battery terminal. 6. Refill the engine coolant. Describe Draining and also Filling Cooling system (Body Vin password 6)Draining and also Filling Cooling device (Body Vin password 3) in Cooling System.