Hello, I have a 2010 GMC Sierra 1500 that I purchased used this year. One day I went to start the vehicle and I got nothing. It appeared completely dead. I disconnected the battery and reconnected and it fired right up. This problem began happening intermittently and more frequently when the weather got hot. In fact, in the afternoon I was guaranteed to have to reset the battery in order to start it. In addition to that, I would randomly get bells and whistles going off while driving- stabilitrack, traction control, park assist will all turn off and not allow me to turn them back on. Every once in a while, the doors will start unlocking and locking on their own. Check engine light and bad tire pressure sensor is also on at random times. I had it at the dealer and they did absolutely nothing. Took it to the best electrical mechanic in town and he has been trouble shooting it for 3 months with no luck. At one point, thought it was the fuse box. He replaced that but the problem persists. When I picked it up he informed me the radio would not turn off. So I took it to a radio shop to trouble shoot and indeed it was bad radio as it was cheap Chinese-made stereo. I was hoping that was the issue, but alas I am still getting the random stabilitrack, etc. and this morning the radio would not turn until I reset the battery. I am beyond frustrated and ready to drive this thing off a cliff. Any recommendations?