What is the reason for the electronic fan not working when the air conditioning is turned on in the Buick GL8?

[Marie]

Buick GL8 electronic fan not working reason: This is due to a malfunction in the car's electronic fan relay. Additional information: 1. Solution: If the car's electronic fan relay is faulty, it is necessary to promptly visit the car's 4S store or a repair shop to inspect or replace the car's relay, which can resolve the issue of the car's electronic fan not working at low speed. 2. Influence of electronic fan control: Some models' electronic fans are controlled by the computer. If the water temperature sensor is damaged, the ECU naturally cannot make a judgment (lacking the electrical signal provided by the sensor), at which point the fan will either not work or run continuously. However, some models' electronic fans are not controlled by the computer, so even if the water temperature sensor is damaged, it will not have any effect.