what all is needed for a 4.3 to 5.3 swap in a 2010 silverado. I currently have a truck that i have swapped a motor to. I was getting a no crank right away. I am currently still having issues with the swap. Everything from the donot truck has been swapped to include fuel pump control module and chassis harness. i am still not getting fuel pump signal to the pump and nothing will work or try to work. what all needs to be done during these swaps.