Same thing happened to me 3 times and they never could figure out what was going on. I did make it to the dealership the second time it happened and they had no explanation as to why, they said they did a "global reset" on the radio and everything started working again. Long story short I ended up getting out of the truck since I had so many other issues with it as well. The dealership made it right and paid off the balance on the 2LT I had and got me in a much nicer 2LZ for not much more than what I originally paid for the 2LT. These trucks just aren't what they used to be I guess. If this one ends up giving me problems too I'm going to a different brand, probably back to Toyota or possibly Ford, don't know. I had a little over 10K on the 2LT and have around 5K on the 2LZ and it seems to be doing fine. I did end up getting a Diablosport I2 and haven't regretted it at all, the transmission tune from the factory is terrible on these trucks. Now its actually a pleasure to drive.