I went to go to on a fire call just to have my Tahoe not start. I had to hook up a vehicle and battery pack up to it to get it started. When going the battery would drop all the way down and the vehicle would stall. Leaving me with no power to anything. Got it started with two vehicles and finally got it to the dealer. Now that I it got fixed, it's happening again. This time I want a new one, or they can just keep the damn thing if I can't have a responsible vehicle I don't want it.