I'll try again to add some content to 2006 K3500 horn removal
clip.jpg This is what the bottom side of the clip looks like
Access thru side.jpg Access thru side of steering columb
Target to release .jpgThis is what you need to press to release air bag

I hope this is of some help to removing your air bag
And don't do like I did, drive around for two days wondering why I had air bag warning light and service air bag message. Re connect the plug under the steering column when your done.