Question about 1999 GMC Sierra
My horn honks randomly as I'm driving down the road
Obviously there is a short in the system probably in the wiring and likely it is exposed wiring. Motion,moisture, and heat would then effect the wiring and cause it too short out at different times and for varied lengths of times. driving your car would cause it to get hot under the hood, so after awhile the wiring shorts and your horn honks. Turning on and off the system causes motion and if it is stuck in a particular position when it shorts than the horn continues to honk
Posted on Jan 11, 2009
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Posted on Jan 02, 2017
SOURCE: 2004 yukon horn problem
The steering wheel needs to pulled off, there is a short somewhere in there. Better have it done, cause if it isn't done right, the air bag can deploy.
Posted on Mar 13, 2009
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