This happens intermitently about 3 maybe 4 times a year. You get in the car, warm/cold, having just driven it or first thing in the morning with it cold. Start it, put it in gear and move. The trans feels like it disengages and then re-engages. It feels like it goes into neutral for just a moment. Almost like a solenoid releasing all the pressure and then re-pressurizing the system. My question is what could it be? Trans fluid is pink and used, but not brown and really dirty. It doesn't smell burned. The trans fluid level is full. Let me know guys and thanks!