How to service the Coolant Temperature Sensor/Switch on GMC Sonoma?

To service the Coolant Temperature Sensor/switch, one should first turn off the ignition and unfasten the wing nuts of the air cleaner cover and air cleaner outlet duct, and shift the air intake assembly to one side. Prior to removing the ect sensor, drain the cooling system below the level of the engine coolant temperature (ECT) sensor and remove the ect sensor harness connector. For installation apply on the threads gm p/n 12346004 sealer or equivalent, then secure the ect sensor onto the engine and tighten to 20 n.m (15 lb ft). Connect the ect sensor harness connector, fluid the cooling system, install the air cleaner outlet duct assembly, and tighten the wing nuts. Lastly, attach the negative Battery Cable.

OEM GMC Sonoma Coolant Temperature Sensor

Coolant Water Temperature Sensor

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GMC Sonoma Coolant Temperature Sensor
Part Number: 25037332
$37.37 MSRP: $75.90
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Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit); Temperature Sensor; Coolant Sensor; Temperature Sending Unit
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1995 GMC Sonoma | Base, GT, SL, SLE, SLS | 4 Cyl 2.2 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
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GMC Sonoma Coolant Temperature Sensor
Part Number: 15326386
$27.19 MSRP: $51.06
You Save: $23.87 (47%)
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Product Specifications
- Other Name: Sensor, Engine Coolant Temperature; Air Charge Temperature Sensor; Intake Air Temperature Sensor.; Temperature Sensor; Manifold Pressure Sensor; Oil Pressure Unit; Fan Switch; Other Sensors
- Replaces: 12146312, 25036979
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991-2004 GMC Sonoma | Base, GT, SL, SLE, SLS | 4 Cyl 2.2 L FLEX, 4 Cyl 2.2 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
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GMC Sonoma Coolant Temperature Sensor
Part Number: 10096181
$29.76 MSRP: $55.88
You Save: $26.12 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Temperature Sensor; Coolant Sensor; Engine Oil Pressure/Temperature Sensor.
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1997 GMC Sonoma | SL, SLE, SLS | 4 Cyl 2.2 L GAS
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GMC Sonoma Coolant Temperature Sensor
Part Number: 25036807
Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit); Temperature Sensor; Fan Switch; Temperature Sending Unit; Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991-1993 GMC Sonoma | Base, SLE, SLS | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
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GMC Sonoma Temperature Sending Unit
Part Number: 12554145
Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2004 GMC Sonoma | SL, SLE, SLS | 4 Cyl 2.2 L FLEX, 4 Cyl 2.2 L GAS, 6 Cyl 4.3 L GAS

GMC Sonoma Coolant Temperature Sensor

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GMC Sonoma Coolant Temperature Sensor Parts Questions & Experts Answers

Coolant Temperature Sensor
15326386
Q: How to service the Coolant Temperature Sensor/Switch on GMC Sonoma?
A: To service the Coolant Temperature Sensor/switch, one should first turn off the ignition and unfasten the wing nuts of the air cleaner cover and air cleaner outlet duct, and shift the air intake assembly to one side. Prior to removing the ect sensor, drain the cooling system below the level of the engine coolant temperature (ECT) sensor and remove the ect sensor harness connector. For installation apply on the threads gm p/n 12346004 sealer or equivalent, then secure the ect sensor onto the engine and tighten to 20 n.m (15 lb ft). Connect the ect sensor harness connector, fluid the cooling system, install the air cleaner outlet duct assembly, and tighten the wing nuts. Lastly, attach the negative Battery Cable.