I have a 2002 Ram 1500 4.7L. I was having hesitation to shift from reverse into drive. A little slippage when acceleration here and there. Fluid was fine. Had filter and fluid changed. Seemed good for a couple days. Now I am really noticing, when I accelerate to get on the e way it hesitates to shift into 2nd. The RPMs go up high. Can this be anything besides the trans? Can anyone help with what it could be?