Before you go yanking that trans I'd drop the valvebody for a look. My '02 Durango R/T all the sudden just started skipping 2nd gear and went to the local dealer here which tried to nail me for a 2500 dollar tranny rebuild. Took it to my trans guy expecting to have it rebuilt but when he dropped the valve body the piece for adjusting the band had fallen out! Got lucky and only cost me 200 to fix! Had the same thing happen in a 727 years ago also. Just letting you know what I went through with ours as I am almost certain that local dealer here would have went ahead and nailed me for a complete rebuild even after seeing the problem...