My 14' has all of the problematic symptoms everyone else is experiencing. Frightening experience to have when you have your wife and 1 year old in the truck. Luckily my parents were going away for the week on their vacation so I could borrow one of their cars while I had to wait to bring it into the dealership. The dealership ended up putting in a new negative battery cable, battery, power fuse block, and power cable ($800 later). Truck seems to be doing much better. Also I had my trailer brake switch unplugged because it was driving me nuts going off every 5 seconds. I ended up plugging that back in and haven't had an issue with it yet. Fingers crossed this resolves the issue. I hope GM issues a recall on this dangerous problem they are having with their vehicles.