Hello every one I recently swapped my transmission in my 2009 Chevy Silverado was working fine for a day or two then went out to get some groceries and speedometer was not working. And It will jump up every now and then and it is shifting really hard I changed the vss on the transfer case and looked over the wiring everything seems OK any help would be much appreciated

 

Can you put a scanner on it and read what the vss is doing?

 

I just did it and I got the code U10073

 

That could very well be your problem. I'm guessing that diagnosing code U10073 will be beyond your skill level.
U0073 Code — Here’s How to Fix It Quickly and Easily