The horn does not work

The horns are up front just behind the grill. Usually had to find.

2001 malibu horn fuse and relay are located in the under the hood fuse box.
location 21 should be the relay
location 43 should be the fuse.
if the relay is put in wrong the horn will not work. if you replaced the relay and the horn stopped working try pulling the relay out and turning it around. and try the horn again.

Horn may be bad or switch on the steering wheel. The way to check either would be with a 12V light or meter.

look at the large fuses under the hood at the fire wall

You can replace the horn. Check to see if the wires connected to the horn have power. Check with a test light. If power is present then the horns are bad.

There will only be one fuse for the horn. Find and check the horn relay. If that works check the wiring and the horn switch..

It may be your horn fuse. It will be in one of your fuse boxes. Just follow your diagram on the fuse box lid.

in the fuse box under hood is a horn relay #7 relay ,not #7 mini fuse

there should be a relay switch in the main fuse box under the hood 

its one of two things,check your horn relay or your horn switch is not getting a ground,you can check this by grounding you relay