How to fix a 1984 Chevrolet Pickup Horn. - 1984 Chevrolet C1500

First locate it. Then check for power. Some horns use the mounting bolt as a ground. Check this. A good ground is critical. Now if you have power and a good ground check the switch in the steering wheel. Last option is you may need a new horn. Try any auto parts store.

Check for power to horn if power no sound replace horn /no power check fuses and relay if good remove horn button and check wire and connection for damage and power