As I have posted in the past along with others the radio in my 2015 Canyon has gone crazy, and apparently there is no inexpensive fix. I have been told the fix is a radio control unit. P/N 84042938 not difficult to replace. Dealers want anyware from$1000-1200 to replace it. I found the part listed on GM parts on line for $166.00. Ordered it they took the oder charged my card, and a day later emailed me that it was a restricted part and your truck has to be done by the dealer. A nice fat labor charge on a part that cost less than $200. And some who have had it replaced, have the same problem come back a year later. So for those with the same problem this is also happening on the full size PU's I will decide this week wether to bite the bullet and spend the money or get rid of it.For something other than GM. Sorry for the rant but I am a grumpy 83.