Hi, im tryin to swap the 4.3 in my 03 silverado to a 5.3 I have the engine and trans but I'm trying to figure out if I need just the engine harness or the hole harness from the truck. I know 03 came with dbw so I need electric pedal and tach module. Can anybody help me out?

 

yes i can check out my parting out suburban post tell what you need

 

Have you ever did something like this?