[Cattletrkr]

I was pulling out of a salebarn yesterday and the truck sorta popped when it shifted from 1st to 2nd. A couple seconds later the CEL came on. I was going up a slight incline and I now believe I know what "limp mode" is. I couldn't break 2000rpm and had 1/2 power at most. Truck kept going and finally revved over 2K, but it wouldn't shift past 3rd (I think). I pulled over and checked the Insight for codes. "Transmission Control Module Malfunction" or something like that. I was loaded and in a hurry so I didn't write down the number I just cleared it. Truck ran perfect upon restart and ran fine today.

Anybody had anything similar?

...a little more on the "pop". It sounded and felt like maybe one of the cows I was hauling kick the front of the trailer and fell down. Kind of a light bang and a bump.