96 chevy 1500 motor swap 5.7 vortec

[fly-esr]

k i put a 5.7 vortec motor out of a 99 gmc yukon in a 96 chevy 1500
i am having a problem getting it to fire to the plugs
i was told that the yukon had a security ignition that the 96 doesnt have and i was wondering if that was true
if so i was wondering if there was a way to by pass the security
i am using the computer and wiring out of the 99 yukon
i am lost and need some kind of help

[Kim57]

If the 99 has a VATS the only way I now around it is to have the ECM re-flashed to have it removed.
Kim

[fly-esr]

I tried calling a couple places and no one could tell me if they flashed it if it would even work
but would i get it flashed for the 96 or the 99
and have them just bypass the vats ?

[Kim57]

It need s to be set up to run the 99 but with the VATS removed.
There are companies that can do it and modify the engine harness to be a stand alone for the engine.
These guys can rework yours.
http://www.wait4meperformance.com/
This is who I used for a new harness for my project.
http://www.psiconversion.com/
Kim