daleone3

Bottom line is GM is tight lipped on what the problem might be and that likely means it is a defective part or configuration issue due to the cost of going public. Especially with 1000's of these still on their lots Could be a ring gear issue exaggerated by poor quality tires or a drive shaft balance issue. I don't think he knows and GM ain't talking. The dealer wanted to go thru and evaluate remaining new inventory and try to address it prior but GM zone guy said not to touch them until they are sold. Not surprised about that Sent from my iPhone using Tapatalk

Here is the update on what they are seeing, he said that seven out of 10 of them tend to be fine, It tends to be more common in different configurations long beds extended cabs double cabs they think it might be related to issues with driveshaft which he said is The longest they have ever been. There is some truth to the issue being caused by tires specifically 22 inch wheel packages with Bridge stone or continentals mounted on them. They have rectified the problem in some instances by putting Michelin's on them. There was some discussion about a bulletin coming out related to the ring gear not being in specification, unacceptable variances on the teeth causing a vibration at speeds. Some of you may know this but GM will put out a bulletin ahead of a recall, if the vehicle comes in with the problem they can fix it per the bulletin but it saves them the money of doing a full recall. He feels there are secondary issues with GM putting too large and too wide of a tire on the truck that is not designed for it but that is more of his opinion. I would be curious as to how many folks with this problem have Bridgestone or continental tires, that may be the best place to start in terms of fixing it, get those tires off and have your dealer spring for Michelin's or a better tire. GM is keeping a close eye on this but they do not want to address it in mass, and will continue to push the dealers to go with the tire balance agenda Good luck, I think I will continue to drive my 2006 Silverado for long as I can Sent from my iPhone using Tapatalk

I will speak with my family member tonight and get specific info an post for you guys and see if they have a resolution in the works. Sent from my iPhone using Tapatalk

Family member (close) is service director for large chevy store. Has worked in chevy for twenty years. He has been told to take trucks in, rebalance wheels and send them on their way. If they come back replace wheels... said they had four more come in last week with bad vibration at 65-70mph. Secondary issues are hard shifting so there is def an issue with powertrain. I told him I found this string on the forum and he suggested passing along the info. Might be an inconvenience to do so but bring it back for the same problem and continue to do so until they address. GM has zone managers that oversee dealers and manage recurring issues. They are well aware and if it is newer, you can force a buyback by GM. Buybacks go back to the dealer and they resell usually with a longer GM sponsored warranty as an incentive but you need to escalate it from the dealer level to get this resolved. Dealer will do nothing to facilitate a buyback Hope that helps Sent from my iPhone using Tapatalk

This is not a wheel problem. It is a flaw in the gearing per a service director at a GM store. Has something to do with gearing not being able to support tire size and a design flaw in gearing. They are hucking tires and wheels to keep owners at bay but if this is you situation bring it back over and over. Document it and then ask for the name of the GM zone rep and push for a buyback. I almost bought a 2016 until this person (a close relative) told me to stay clear and not buy one despite huge incentives.