A different horn problem
Thread Starter
Melting Slicks
Joined: Dec 2003
Posts: 2,857
Likes: 2
From: pawleys island sc
A different horn problem
I've done all the searching and can't come up with anything I can use. My horn comes and goes. Every time I get in my car I have to hit the horn to see if I have one. If it works it will keep working until I shut the car off. When I re-start the car I hit the horn and it works(!) or it does not(?). If it's not working it will not start working until I shut the car off. It might take one try or two trys or it's just not going to work anymore today. Next day when I start it up it works or not - it's a crap shoot.It comes and goes on its own schedule. I've checked the grounds; asked the dealer if GM has put out a bulletin on the subject - no luck.
Any ideas?
Any ideas?
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
The typical failure heard here is the horn membrane in the steering wheel is having issues. I think it only sends a command to the BCM which in turn sends a ground signal to the horn relay. I'm not sure of that fact and someone else can correct me if I'm wrong. I suppose you could have a hanging up horn relay in the engine compartment fuse box.
Melting Slicks
Joined: Oct 2007
Posts: 2,383
Likes: 13
From: Kinston North Carolina
When it won't work, listen under the hood for relay click. That will tell you if the trouble is before or after the relay. Post what you find. Relay # 36. Also, push the panic button on the remote, that tells the BCM to activate the horn.
Last edited by byronhunter; Jul 25, 2009 at 11:53 PM.
Thread Starter
Melting Slicks
Joined: Dec 2003
Posts: 2,857
Likes: 2
From: pawleys island sc
Thanks Byron.
