Engine swap

[Michael Irby]

Does anyone know if a 1999 Silverado 2500 engine and transmission would fit in a 2015 gmc 1500? The gmc is a 4x4 and the Silverado is not, possibly could be some workarounds?

[rojas84]

Not directly possibly with a stand alone harness !! The 99 is an ls engine and the 15 is an lt so no it won't communicate with the 15 at all

[CamGTP]

Basically zero work arounds, don't even try it.

 

You need a 2014+ engine. Ideally a 2014-2015 to be direct plug and play. I believe 2016-2018's use a different high pressure fuel pump, but that can be swapped.

Edited May 28, 2023 by CamGTP

[16LT4]

Not to mention,  illegal.