My 2010 will only work in reverse. When I put it into any drive position, nothing happens. It was suggested to drain and flush the trans. There are no codes showing for the trans. When I drained it and took off the pan, I discovered one of the oil feed lines had a loose end and is no longer soldered. Could this be the problem?

 

Yes, the fluid transfer pipe assembly is the issue

this includes a part number

GM 24202349 4T40E Automatic Transmission Forward Clutch Low and Reverse Band Lube Pipe