While driving my vehicle changes from automatic to sorts mode and shows shift changing on dash, which causes it to go from any speed to 5mph instantly. it pulls car back and causes sudden speed change and is very dangerous. i have taken it to the dealer since purchased various times and the still do not find anything and i am still paying for the car that i bought a yr ago while it continues to do the same thing. last time it happened was sept 15 2018 (has happened over 20 times).