So I did injector work, (replaced 2 and new O-rings on the other 6) when I put it all back together I am getting the codes indicated above, the truck runs but you can hear it is not quite right at low rpms, I am leaning toward valve cover gaskets and UVC harness, but have a tight budget, any other thoughts?

 

Those codes are for both the left and the right bank. So something didn't click right when you put them together. Pull the valve covers off and re-check.

 

I would double check the large connector above the drivers side valve cover. IIRC it is a 42 pin connector. You could also use an ohm meter to check the resistance of the injectors at the 9 pin plug. Like Curtis said most likely a connection. Also, what codes/symtoms were you getting before you did the work? Good luck....

 

Yep Curtis nailed it!

 

Pulled all connecters from the injectors to the big one over the driverside valve cover and cleaned pins, problem is solved thanks for the help guys