I have noticed several times over the summer so far that when i use my ac the tranny slips a lit when i start from a stop. i ussually drive with the windows down but for times when i want to stay cool i use the ac and i really dont want to worry about the tranny if i use the ac. it happened several times and only when the ac is on or just was turned off so i assume it has to be involed with the ac some how.