So today i drove to jack in the box and while sitting in the drive thru after holding the brake down i noticed after i let off the brake while in drive the car didnt creep foward like normal. i hit the gas and it revved up to 2000rpms before moving suddenley. came to a stop did it again. i drove near by and tried to mimmick what i did and it hasnt happend since. no dash lights fluids are all good. its a 3.8 v6 btw.