How do you fix fans to start on 1998 Cadillac STS?

To fix the fans on a 1998 Cadillac STS, first check the fuses and relays in the fuse box, as a blown fuse can prevent the fans from operating. Next, inspect the fan wiring for any damage or loose connections. If the fans still don’t work, you may need to test the fan motors directly with a power source to determine if they are functioning. Lastly, if necessary, replace any faulty components, such as the temperature sensor or the fan relay.