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Did a 160 mile round trip to the city today and got back into town and I thought the truck was shifting weird. My green truck with the 46re automatic. It had been occasionally been doing the 1-2-1-2-1-2-1-2 shifting bullshit at slow speeds but when I stopped at the first stop sign going into town it seemed to go straight from first into third. Took off from another stop and it did it again, so I put the shifter in 2 and sure enough it had missed second, the revs were too different. Got to the next corner, stopped, and when I hit the gas to drive ahead slow it was like it paused, then a snap sound. Thought I bust a U-joint or something. But it drives ahead, now with a grinding noise, playing card in the bike spoke kind of noise. Drives like this through first and second grinding the whole way, and any sudden throttle just slips. Once it hits third gear it drives perfectly, takes fourth gear and locks it up just like it's supposed to. No problem there. I can drive down the highway and resume my cruise session as if there's nothing wrong. So why are 1 and 2 doing this? If you torque it at all it will just slip, you gotta take it easy to get it into third and then you can step on it. It's as if I only have half a transmission. Think something broke inside? Low reverse band or something? What do you guys think? I had this trans resealed when the new motor went in the truck, that was December '05. About 30k miles on the fluid and filter that was done at the same time.