How do I remove the engine coolant temperature (ECT) sensor on Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL?

Drain the cooling system below the ECT sensor level. Disconnect the electrical connector from the ECT sensor. Unscrew and remove the ECT sensor. If you're installing the old sensor, wrap the threads of the new ECT sensor with Teflon tape and the threads of the new sensor should already be coated with sealant. Installation is the reverse of removal. Be sure to tighten the ECT sensor to the torque specifications. Refill the cooling system.

What is the coolant temperature indicator system and Coolant Temperature Sensor and how does it work on Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL?

The coolant temperature indicator system comprises a dashboard-mounted gauge and an engine-mounted sensor, which also informs the fuel and emissions systems. If overheating is indicated, check the coolant level and sensor operation. A defective sensor should be replaced. If the sensor is functional, the temperature gauge should be assessed by a dealer using a scan tool, as the onboard computer processes the data.

Genuine Chevrolet Avalanche Coolant Temperature Sensor

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Chevrolet Avalanche Sensor Assembly, Engine Coolant Temperature
Part Number: 12608814
$30.69 MSRP: $57.90
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Product Specifications
- Other Name: SENSOR, Coolant Temperature (Engine Unit)
- Replaces: 25037062, 12191170, 15326388, 15369305
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2013 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Avalanche Sensor Assembly, Engine Coolant Temperature
Part Number: 12572027
$36.08 MSRP: $74.91
You Save: $38.83 (52%)
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Product Specifications
- Other Name: SENSOR, Coolant Temperature (Engine Unit)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2006 Chevrolet Avalanche | 3/4 TON | 8 Cyl 8.1L
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Chevrolet Avalanche Sensor Assembly, Engine Coolant Temperature (W/ Engine Coolant T
Part Number: 12554944
$137.26 MSRP: $398.53
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002 Chevrolet Avalanche | 3/4 TON | 8 Cyl 8.1L

Chevrolet Avalanche Coolant Temperature Sensor Parts Questions & Experts Answers

Sensor Assembly, Engine Coolant Temperature
12608814
Q: How do I remove the engine coolant temperature (ECT) sensor on Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL?
A: Drain the cooling system below the ECT sensor level. Disconnect the electrical connector from the ECT sensor. Unscrew and remove the ECT sensor. If you're installing the old sensor, wrap the threads of the new ECT sensor with Teflon tape and the threads of the new sensor should already be coated with sealant. Installation is the reverse of removal. Be sure to tighten the ECT sensor to the torque specifications. Refill the cooling system.
Sensor Assembly, Engine Coolant Temperature
12608814
Q: What is the coolant temperature indicator system and Coolant Temperature Sensor and how does it work on Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL?
A: The coolant temperature indicator system comprises a dashboard-mounted gauge and an engine-mounted sensor, which also informs the fuel and emissions systems. If overheating is indicated, check the coolant level and sensor operation. A defective sensor should be replaced. If the sensor is functional, the temperature gauge should be assessed by a dealer using a scan tool, as the onboard computer processes the data.