Not sure if this can be done. I have successfully installed a LMM into a 2010 Yukon XL 2500. I am trying to get the dual tank set up to work. If I install a dual tank tune in the ECU from a 2008 cab chassis the stabilitrak will set a code that says ECU received invalid serial data. The engine and stabilitrak will run code free if I use the original 2009 tune in the ECU from the donor pick-up.
Is there any way to take just the fuel system section of the ECU calibration from the 2008 dual tank ecu tune and put it in the 2009 calibration that will work with stabilitrack?
As far as I can tell GM did not ever use Stabilitrak in a cab chassis (dual tank truck) So Im not sure if there is a stock GM file to use for this unique situation.
Thanks, Mark