Where is the water temperature sensor located on the Buick GL8?

1 Answers
SilasDella
07/29/25 7:31pm
Follow the upper radiator hose towards the thermostat on the engine side, and you will find a usually copper-colored component with wiring terminals - this is the water temperature sensor. Below is relevant information about the water temperature sensor: 1. Water temperature sensor classification: There are two main types of water temperature sensors. Regardless of type, their internal structure consists of a thermistor with resistance values ranging between 275 ohms to 6500 ohms. The resistance increases as temperature decreases and decreases as temperature rises. 2. Water temperature sensor operating conditions: These two types of sensors operate under different voltage conditions. The sensor for the water temperature gauge uses 12V, while the one for the engine control unit uses 5V, making them non-interchangeable. Additionally, their connector shapes differ - the former has only one wire in the connector, while the latter for the engine control unit has two wires.
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