Transmission fluid change?

2011 Chevy. After a fluid change, does the newer cars have to adapt to the change of new fluid? It seems like my car isn't shifting right. Not always. I had a shift flare two times in a row then it didn't do it at all. The fluid was just changed yesterday. The dealer said that the fluid needed to be changed... show more 2011 Chevy. After a fluid change, does the newer cars have to adapt to the change of new fluid? It seems like my car isn't shifting right. Not always. I had a shift flare two times in a row then it didn't do it at all. The fluid was just changed yesterday. The dealer said that the fluid needed to be changed and said it wasn't burnt so I had it done. Thoughts?
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