Re: horn 07 gc laredo
Always first thing to check is the fuse. Its number 16 (20A) in the integrated power module under the hood. If ok, you could swap the horn relay with a same one next to it. If no cure, remove the connector from the horn and measure voltage while someone presses the horn switch. If there is power, then the horn is bad. No power, then or a wire problem, the horn switch or the clockspring in the steering wheel.