How to replace the Coolant Temperature Sensor on Buick LaCrosse?

Engine replacement of the Engine Coolant Temperature (ECT) Sensor needs an engine shutdown to safeguard against coolant leakage and injury followed by turning the ignition OFF. Before extracting the coolant temperature sensor drain an appropriate amount of coolant while simultaneously removing its electrical connector. Installation requires placement of the new coolant temperature sensor followed by tight torque to max of 22 N.m (16 lb ft). Reconnect the coolant temperature sensor electrical connector. The cooling system should undergo a complete inspection followed by necessary fluid additions before completion of the operation.

How to replace the Coolant Temperature Sensor on Buick LeSabre?

Start by turning the ignition OFF before draining coolant so that it reaches a level lower than the ECT sensor. After disconnecting the electrical connector you must remove the ECT sensor with proper care. Use sealer GM P/N 9985253 or equivalent to cover the ECT sensor threads before installing the new component while confirming the replacement components have the proper application-specific part numbers. First tighten the ECT sensor at 20 N.m (15 lb ft) then connect the ECT harness connector to the sensor. Finally, refill the cooling system. Working with the coolant sensor requires special caution because any damage will impair the system's ability to properly operate fuel control and fuel injection functions. Perform all torque specifications correctly to prevent component damage while staying alert about the necessity of thread locking compounds and lubrication materials and corrosion inhibitors or sealants that need specified use.

How to service the Coolant Temperature Sensor/Switch (For Computer) on Buick Regal?

The Coolant Temperature Sensor/switch (For Computer) service will be done first by making sure that the ignition is off and draining the Radiator coolant. Unplug the ect sensor electrical connector, use a 19 mm deep well socket and extension and remove the ect sensor. For installing, inserting, gently start the ect sensor into the engine and fix it with a tightening force of 30 n.m (22 lb ft). Reconnect the electrical connector and refilling the Radiator with coolant. Turn on the engine and inspect for leaks, and then visually confirm the level of coolant.

OEM Buick Coolant Temperature Sensor

Coolant Water Temperature Sensor

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36 Coolant Temperature Sensors found

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Buick Coolant Temperature Sensor, Black
Part Number: 12608814
$30.83 MSRP: $57.90
You Save: $27.07 (47%)
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Product Specifications
- Other Name: Sensor Assembly-Engine Coolant Temperature *Ite Or Black; Engine Coolant Temperature Sensor; Temperature Sensor; Temperature Sending Unit; Coolant Temperature Sensor; Engine Oil Pressure/Temperature Sensor; Computer Control Sensors
- Replaces: 15369305, 25037062, 12191170, 15326388
Fits the following Buick Models:
- Enclave | 2018-2021 | Avenir, Base, Essence, Preferred, Premium | 6 Cyl 3.6 L GAS
- LaCrosse | 2008-2016 | Base, Convenience, CX, CXL, Leather, Premium, Super | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 5.3 L GAS
- Lucerne | 2009-2011 | CX, CXL, CXL Special Edition | 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
- Rainier | 2004-2007 | CXL, CXL Plus | 8 Cyl 5.3 L GAS
- Regal | 2011-2017 | Base, CXL, Premium | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
- Rendezvous | 2006-2007 | CX, CXL | 6 Cyl 3.5 L GAS
- Terraza | 2005-2007 | CX, CXL | 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
- Verano | 2012-2017 | Base, Convenience, Leather, Premium, Sport Touring, Turbo | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
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Buick Temperature Sending Unit
Part Number: 10137628
$37.39 MSRP: $70.21
You Save: $32.82 (47%)
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Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Roadmaster | 1991-1993 | Base, Estate Wagon, Limited | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
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Buick Coolant Temperature Sensor
Part Number: 55489870
$5.88 MSRP: $9.22
You Save: $3.34 (37%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Engine Coolant Temperature Sensor; Temperature Sensor; Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Encore GX | 2020-2023 | Essence, Preferred, Select | 3 Cyl 1.3 L GAS
- Envision | 2021-2023 | Avenir, Essence, Preferred | 4 Cyl 2.0 L GAS
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Buick Fan Switch
Part Number: 10232600
$2.54 MSRP: $36.86
You Save: $34.32 (94%)
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Product Specifications
- Other Name: Switch, Coolant Temperature (Engine Unit); Engine Coolant Temperature Sender; Coolant Temperature Sender; Temperature Switch
Fits the following Buick Models:
- Regal | 1992-1995 | Custom, Limited | 6 Cyl 3.1 L GAS
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Buick Temperature Sending Unit
Part Number: 25036649
$23.08 MSRP: $70.14
You Save: $47.06 (68%)
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Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Skyhawk | 1984 | Custom, Limited | 4 Cyl 2.0 L GAS
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Buick Coolant Temperature Sensor
Part Number: 25036628
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Fan Switch; Temperature Sending Unit; Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Century | 1984-1985 | Custom, Estate Wagon, Limited | 6 Cyl 4.3 L DIESEL
- LeSabre | 1988 | Base, Custom, Limited | 6 Cyl 3.8 L GAS
- Riviera | 1984-1985 | Base, Luxury, T-Type | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
- Skylark | 1986-1990 | Custom, Gran Sport, Limited, Luxury Edition | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
- Somerset | 1986-1987 | Custom, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
- Somerset Regal | 1985 | Base, Limited | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
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Buick Coolant Temperature Switch
Part Number: 25036601
Product Specifications
- Other Name: Switch Assembly, Early Fuel Evaporation Heater Engine Coolant Temperature; EFE Temperature Switch; Coolant Temperature and Early Fuel Evaporation Control Switch Kit.
Fits the following Buick Models:
- Skyhawk | 1984 | Custom, Limited, T-Type | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Skylark | 1984-1985 | Custom, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS
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Buick Temperature Sending Unit
Part Number: 8993146
Product Specifications
- Other Name: Sensor Assembly-Engine Wtr Temperature (1 Terminal); Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Century | 1984-1988 | Custom, Estate Wagon, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.8 L GAS
- Skyhawk | 1984-1987 | Custom, Limited, Sport, T-Type | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Skylark | 1984-1985 | Custom, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS
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Buick Temperature Sending Unit
Part Number: 25037138
Product Specifications
- Other Name: Switch, Coolant Temperature (Engine Unit); Switch
Fits the following Buick Models:
- Century | 1988-1989 | Custom, Estate Wagon, Limited | 6 Cyl 2.8 L GAS
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Buick Coolant Temperature Sensor
Part Number: 10137646
Product Specifications
- Other Name: Sensor; Temperature Sending Unit; Sensor, Coolant Temperature (Engine Unit); Sensor, Computer Control Sensors
Fits the following Buick Models:
- Century | 1993 | Custom, Limited, Special | 4 Cyl 2.2 L GAS
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Buick Temperature Sending Unit
Part Number: 25037258
Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Century | 1989 | Custom, Limited | 6 Cyl 2.8 L GAS
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Buick Temperature Sending Unit
Part Number: 25037250
Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Electra | 1988-1989 | Limited, Park Avenue, Park Avenue Ultra, T-Type | 6 Cyl 3.8 L GAS
- LeSabre | 1988-1991 | Base, Custom, Limited | 6 Cyl 3.8 L GAS
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Buick Temperature Switch
Part Number: 25036373
Product Specifications
- Other Name: Switch Assembly, Engine Coolant Temperature Indicator; Temperature Sending Unit; Switch, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Century | 1984-1986 | Custom, Estate Wagon, Limited | 6 Cyl 2.8 L GAS
- Skyhawk | 1984-1987 | Custom, Limited, Sport, T-Type | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Skylark | 1984-1985 | Custom, Limited, T-Type | 6 Cyl 2.8 L GAS
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Buick Temperature Sending Unit
Part Number: 25036371
Product Specifications
- Other Name: Switch, Coolant Temperature (Engine Unit); Switch Package, Coolant Temperature (Engine Unit); Switch, Engine Coolant Temperature ( Engine Unit)
Fits the following Buick Models:
- Century | 1984-1989 | Custom, Estate Wagon, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 3.8 L GAS
- Electra | 1984 | Limited, Park Avenue | 6 Cyl 4.1 L GAS
- LeSabre | 1984-1985 | Collector's Edition, Custom, Limited | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS
- Regal | 1984-1985 | Base, Grand National, Limited, T-Type | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS
- Skylark | 1984-1985 | Custom, Limited | 4 Cyl 2.5 L GAS
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Buick Fan Switch
Part Number: 25036629
Product Specifications
- Other Name: Switch, Computer Control Sensors; Temperature Switch; Temperature Sending Unit; Switch, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Century | 1990, 1984-1985 | Custom, Estate Wagon, Limited | 4 Cyl 2.5 L GAS, 6 Cyl 4.3 L DIESEL
- Electra | 1989, 1984-1987 | Estate Wagon, Limited, Park Avenue, T-Type | 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS, 6 Cyl 4.3 L DIESEL, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
- LeSabre | 1984-1990 | Base, Collector's Edition, Custom, Estate Wagon, Limited, T-Type | 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
- Regal | 1988-1989 | Custom, Limited | 6 Cyl 2.8 L GAS
- Riviera | 1984 | Base, Luxury, T-Type | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
- Skyhawk | 1988-1989 | Custom, SE | 4 Cyl 2.0 L GAS
- Skylark | 1996-1998, 1988-1991 | Base, Custom, Gran Sport, Limited, Luxury Edition, Olympic Gold Edition | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.1 L GAS, 6 Cyl 3.3 L GAS
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Buick Temperature Sending Unit
Part Number: 25037244
Product Specifications
- Other Name: Switch, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Electra | 1990 | Limited, Park Avenue, Park Avenue Ultra, T-Type | 6 Cyl 3.8 L GAS
- Park Avenue | 1991-1993 | Base, Ultra | 6 Cyl 3.8 L GAS
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Buick Temperature Switch
Part Number: 25036647
Product Specifications
- Other Name: Switch Assembly, Engine Coolant Temperature Indicator; Switch, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Skyhawk | 1984 | Custom, Limited | 4 Cyl 2.0 L GAS
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Buick Coolant Temperature Sensor
Part Number: 25037202
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Temperature Sending Unit; Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Skyhawk | 1987-1989 | Custom, Limited, SE, Sport, T-Type | 4 Cyl 2.0 L GAS
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Buick Fan Switch
Part Number: 3050223
Product Specifications
- Other Name: Switch Assembly, Engine Coolant Temperature Indicator; Switch; Switch, Engine Air Cooling(Electrical)
Fits the following Buick Models:
- Century | 1984-1987 | Custom, Estate, Estate Wagon, Limited, Olympia Limited, T-Type | 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS
- Electra | 1985 | Limited, Park Avenue | 6 Cyl 4.3 L DIESEL
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Buick Coolant Temperature Sensor
Part Number: 25036807
Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit); Temperature Sensor; Fan Switch; Temperature Sending Unit; Sensor
Fits the following Buick Models:
- Century | 1989-1993 | Custom, Estate Wagon, Limited, Special | 4 Cyl 2.5 L GAS, 6 Cyl 3.3 L GAS
- Skylark | 1992-1995 | Custom, Gran Sport, Limited | 4 Cyl 2.3 L GAS, 6 Cyl 3.3 L GAS

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Buick Coolant Temperature Sensor Parts Questions & Experts Answers

Coolant Temperature Sensor
12639899
Q: How to replace the Coolant Temperature Sensor on Buick LaCrosse?
A: Engine replacement of the Engine Coolant Temperature (ECT) Sensor needs an engine shutdown to safeguard against coolant leakage and injury followed by turning the ignition OFF. Before extracting the coolant temperature sensor drain an appropriate amount of coolant while simultaneously removing its electrical connector. Installation requires placement of the new coolant temperature sensor followed by tight torque to max of 22 N.m (16 lb ft). Reconnect the coolant temperature sensor electrical connector. The cooling system should undergo a complete inspection followed by necessary fluid additions before completion of the operation.
Coolant Temperature Sensor
15326386
Q: How to replace the Coolant Temperature Sensor on Buick LeSabre?
A: Start by turning the ignition OFF before draining coolant so that it reaches a level lower than the ECT sensor. After disconnecting the electrical connector you must remove the ECT sensor with proper care. Use sealer GM P/N 9985253 or equivalent to cover the ECT sensor threads before installing the new component while confirming the replacement components have the proper application-specific part numbers. First tighten the ECT sensor at 20 N.m (15 lb ft) then connect the ECT harness connector to the sensor. Finally, refill the cooling system. Working with the coolant sensor requires special caution because any damage will impair the system's ability to properly operate fuel control and fuel injection functions. Perform all torque specifications correctly to prevent component damage while staying alert about the necessity of thread locking compounds and lubrication materials and corrosion inhibitors or sealants that need specified use.
Coolant Temperature Sensor
10096181
Q: How to service the Coolant Temperature Sensor/Switch (For Computer) on Buick Regal?
A: The Coolant Temperature Sensor/switch (For Computer) service will be done first by making sure that the ignition is off and draining the Radiator coolant. Unplug the ect sensor electrical connector, use a 19 mm deep well socket and extension and remove the ect sensor. For installing, inserting, gently start the ect sensor into the engine and fix it with a tightening force of 30 n.m (22 lb ft). Reconnect the electrical connector and refilling the Radiator with coolant. Turn on the engine and inspect for leaks, and then visually confirm the level of coolant.