My SIlverado was at dealership again yesterday also for radio reception issues. GM and field service engineer attempted a fix with a antenna booster, but it did not work. Not sure what will happen now, I will have to wait till next week to find out. I requested a buy back. This is at least 6 times I have had it in for FM issue, also have been in contact with GM.
I am not sure about a buy back since I really like the truck, but the FM reception is horrible. My service manager drove a newer built truck and compared it to mine, he said the newer built vehicle does have better FM reception than my truck. My truck was an early build model. I don't want to loose out on a buy back, since I have over $1,000 in accessories I added. Also, when I purchased truck I had a trade worth $26,000, so I would loose the tax difference I saved. Also would loose $2,000 worth of GM card points.