Yes I ready to try the file from above.

2002 Express Incomplete Vehicle. 1500 series 4x2 5.7L L31 4L60E Transmission. So now I need to figure out whats different in a 4x4.

So a 2002 4l60E Factory tune like came in my donor 411 which was removed from a 2002 Yukon L59 4x4 truck should work? I am new to tuning and just want to get the the cab set on the 99 chassis wire it...

Looking at doing a motor and transmission from a 1999 suburban using a 411 ecm into my 72 GMC pickup. My question is if the transmission section of the file for a 2002 express van works for the 99...

Thank you!

Does anyone know of a XDF file for OS 12216125? 2002 Yukon

Hi all: I have a 1999 suburban Motor/Trans Wiring harness. Eventual goal is to go to a 411 ECM to make it run. For now though I would like to get the original tuning file from the black box ECM. It...

This is exactly the project I am researching info for! Thanks!