Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006EXPRESS 2500 V8-6.6L DSL TURBO VIN 2REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)SERVICE AND REPAIR
2006 Chevrolet Express 2500 V8-6.6L DSL Turbo VIN 2
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
2006 Chevrolet Express 2500 V8-6.6L DSL Turbo VIN 2SECTION Service and Repair
ENGINE COOLANT TEMPERATURE (ECT) SENSOR REPLACEMENT
REMOVAL PROCEDURE
NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
1. Remove the air cleaner assembly.
2. Remove the brace from the intake air heater-to-generator bracket.
3. Drain the coolant to a level below the engine coolant temperature (ECT) sensor. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (Vac N Fill). Service and Repair
4. Disconnect the ECT sensor electrical connector.
5. Remove the ECT sensor (1).
INSTALLATION PROCEDURE
NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
1. If installing the old sensor, coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent.
2. Install the ECT sensor (1).
NOTE: Refer to Fastener Notice.
Tighten the sensor to 20 N.m (15 lb ft).
3. Connect the ECT sensor electrical connector.
4. Fill the cooling system, if necessary. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (Vac N Fill). Service and Repair
5. Install the brace to the intake air heater-to-generator bracket.
6. Install the air cleaner assembly.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.