1993 Chevy Lumina The fans don't work

For the radiator fans, the arrows in the picture are pointing to the relays for secondary and primary radiator fans. Under the hood, passenger side toward the front. I can't say the relays are faulty. The cts can also have an effect when the fan comes on.

The heater blower relay should be under the dash passenger side above the blower motor.

I may have given you the wrong info, you ask for sensors, I gave you relays.