Hello friends I have a H3 2007 and I noticed that when accelerating when going up to the first gear it enteres more rough, and that had never happened to me, A code also appeard "Trans Imput Speed Sensor", is it related or do you think it is a bigger transmission problem.
Aoutomatic Transmition

 

Post the code.

 

Get the truck scanned for any codes, and as hummerz said, post what you find.... the actual code(s), not what some kid at the auto parts read off to you as a conclusion for the problem. Could be different things.