I bought my Trailblazer (which I love) in the spring of 2012. A few months after purchasing the vehicle I came to learn that the horn no longer worked. I know the horn worked when I purchased the car because I checked it. I brought it in to a well renowned repair shop and they told me that their findings after looking it up was that there is a slight glitch with the horn and that, like other forms had stated, the more you use it the better chance of getting it to work. The mechanic said that he was reading that other people were having the same problem and that the horns on these Trailblazers needed to be massaged a little in the corner and the would work again. He said they got it working. I have yet to be able to get any noise out of my horn at all. This concerns me because of the safety issues that can arise with the lack of a horn to get someone else's attention if need be.

- Waite Park, MN, USA

Horn button in steering wheel becomes progressively more difficult to actuate, eventually failing altogether. Horn can no longer be sounded by pressing on air bag cover on steering wheel. Consequence is inability to sound a hazard warning to other vehicles during an emergency, which can render a collision unavoidable. Defective or misadjusted horn button switch is proven as root cause because horn can still be activated by remote key fob.

- Cedar Rapids, IA, USA

Horn doesn't always work. Seems to be a shortage.

- Oxford, NC, USA