I have no idea! I called Casey and he didnt know either....Im stumped guys maybe the bad flash on the pcm caused an over pressure or something stuck open or closed.Its kinda scary,thats the last thing i need rite now.Since its paid for Ill use the title to get a loan on it and replace motor and tranny at the same time,6.0 and a 4l80.Any body know where to find a good complete pullout? And how much it will cost me turn key...out the door