How to replace the Coolant Temperature Sensor on 2003 Cadillac CTS?

Partially drain the coolant system and select Engine Coolant Temperature (ECT) sensor To replace, the engine must cool down. To get at the sensor, remove the wiper motor module, and make the electrical connector inaccessible, and then remove the sensor. Install a new sensor using non-hardening sealer, tighten it, reconnect the electrical connector, and reconnect wiper motor module.

OEM 2003 Cadillac CTS Coolant Temperature Sensor

Coolant Water Temperature Sensor

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2003 Cadillac CTS Coolant Temperature Sensor Part Number: 90570185
$22.95 MSRP: $43.10
You Save: $20.15 (47%)
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Product Specifications
- Other Name: Sensor, Engine Coolant Temperature; Engine Coolant Temperature Sensor; Temperature Sensor; Sensor, Coolant Temperature (Engine Unit); Sensor, Computer Control Sensors
- Item Weight: 0.40 Pounds
- Item Dimensions: 3.1 x 1.4 x 1.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 90570185
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2003 Cadillac CTS Submodels:
- Base, Luxury, Luxury Sport | 6 Cyl 3.2 L GAS

2003 Cadillac CTS Coolant Temperature Sensor

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2003 Cadillac CTS Coolant Temperature Sensor Parts and Q&A

Q: How to replace the Coolant Temperature Sensor on 2003 Cadillac CTS?
A: Partially drain the coolant system and select Engine Coolant Temperature (ECT) sensor To replace, the engine must cool down. To get at the sensor, remove the wiper motor module, and make the electrical connector inaccessible, and then remove the sensor. Install a new sensor using non-hardening sealer, tighten it, reconnect the electrical connector, and reconnect wiper motor module.