Deader than dead. Pulled up on the highway and the throttle quit responding. I looked down in time to catch battery saver mode. Truck would not restart. Would crank and crank but would not fire. Had it towed to the dealership. They pulled several codes that had been stored. They've had it since Tuesday and can't get anything to respond. I bought an extended warranty but I put a tune on it so I'm a little worried about it.