Lol, technically you could... But it would be more work than its worth. I've done it before, but the other way around.

 

Oh and just so yal know my trucks a V6 not a V8 not sure if that makes the swap idea better or worst.

 

It's a 58x not 54 lol but I think he still has bigger problems being he is a v6 also

 

I'm still trying to wrap my head around this. If i have the engine, harness and computer from the 03 2500 ( LQ4 GenIII ) truck why can't i put it in my 2013 truck. I thought the computer runs the engine. Guess my main question is why i see people putting LS base engine of all years in muscle car, classic car and older trucks ( pre 90 ) but i can't put it in a newer truck? Thanks

 

What other problems i might have?

 

Your truck is to new to run the 99-07 harness. To many computers that use signals from your PCM now. People take the the harness you have and make it a stand alone to work in older stuff that don't need abs and body control inputs and outputs. You need to find a 07 and up gmt 900 harness and buy a new motor with a 58x wheel or have your 6.0 changed to 58x but that's done from a machine shop.

 

I should have reworded that a little diff. Not bigger problems. Just other problems But fuel lines will be different not a big deal. I'm sure there might be a couple little things but nothing that's not doable.

 

Maybe i should have point that out. I plan on changing the fuel line and changing the fuel pump in the tank. I have about 3 or 4 damaged trucks to take parts off like mentioned about plus A/C comp, all front drive parts and cable style TB. Thanks for ALL the comments i do really appreciate it.

 

Thanks
So if im reading this right i have muti computers in my newer truck that need to all work together. Please excuse my ignorance.

 

[QUOTE=GWEE;5227408]Thanks
So if im reading this right i have muti computers in my newer truck that need to all work together. Please excuse my



PCM uses signals from abs and bcm. They all work through can. I have not compared diagrams side by side but I can bet there is a lot of wires that are in different locations.