Can I make a 2004 5.3l with complete harness work in a 2007.5 4.8l Silverado and it work? The motor is in I've already swapped over all accessories it won't crank obviously. I know it's timed different so I was wanting to try the harness swap.
I have a 2007.5 4.8l I put a 5.3l out of a 2004 all wires are original for 4.8 I did extend the cam sensor to plug on the back as the 5.3 sensor is on the back of the engine all is in it now it will not start any ideas?