As JIS001 says you would need to change out pretty much every electrical item as they are all programmed to operate together. The PCM, wiring harness, BCM, instrument panel, ABS, even the radio all talk on the network and need to match the engine and transmission. Once completed you then may find that you cannot drive it on the road. That would depend on what types of state/province laws you fall under. In any places that do emissions or even simple plug in testing it would fail because you now have the wrong engine in it when compared to the VIN number.
Can it be done, sure. The best way would be to buy a 5.3 equipped truck, then you have all the parts to do the swap. If you decided to just buy all the parts piecemeal, you could likely buy a 2019 off the lot for less money.
Thursday, May 31st, 2018 AT 7:19 AM