Steering Column Repair: GM truck steering column, gm truck, plastic horn

Question
I have a 1978 GM truck column Auto w/ tilt I am having a problem with the plastic horn piece that is under the snap ring it has a crack and my steering wheels wiggles can you tell me where I can purchase one I can not find out what it is called .Any help will be greatly appreciated . Thanks Gil

Answer

gm upper brg Hello Gil:
We sell those parts.  It's called a horn cancel cam.  the looseness you are experiencing is not from the cancel cam though, it's probably from the bearings or the retainers underneath it.
I will enclose a diagram to help you reassemble it properly, but you will need a spring plate compressor to do this job.  Most part stores carry them for @ $15.
If you need to order the part, email me directly at [email protected].  The part sells for $15.08 plus $6.50 shipping.