Not sure if anyone has had this problem but its kinda pissing me off...The other day I went out to my car and put my alarm on and my horn is about half as load as it should be...Not sure why this is happening..Any imput on this matter would be appreciated..

 

It may be something as simple as a loose or corroded connection, or the horn itself is going bad, its not common but it can happen.

Pull your left front fender liner like you're going to change a headlight bulb, and the horn is pretty much right there.

This thread will show you the horn location and how to replace it with either a new horn, or something louder.

https://www.chevyhhr.net/forums/show...ion#post292227

 

Maybe some insects have built a home in there. Like " dirt dobber bees".

 

Check horn relay and measure hoen voltage??