Help! Tcm

tomhardin2013

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2003 duramax lb7 edge evolution cts 4" exhaust are the only mods on the truck

So today I was driving my truck down the highway, I was hauling ass racing a Trans am when my truck shifted down a gear and was stuck in that gear. I pulled off and read the code on my tuner, it said it was the Tcm (transmission control module) I stopped by auto zone to see if they have them and how much they would be just in case I needed one asap, when I went back to my truck abs started it, the check engine light went away and it then shifted perfectly normal. I stopped to get fuel and the rest of the way home it still acted as if nothing happened. I'm just wondering if maybe it over heated kr what's going on. I don't have a warranty from the dealer that covers this that I know of and my truck is at 14x,*** miles. Any advice? Thanks in advance!
 

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