P0480 Chevrolet -what would cause the 25amp fan cont fuse to keep blowing after replacing it

Question

The check engine light will come on and go off on its own also

Answer 1

P0480 Low speed cooling fan relay control circuit

This is a shoft condition , The cooling fan wire somewhere is shorted to groundYou cooling fan can be internally shorted out or along the harness of the fan you have a short to ground