I'm updating a tune file to some of the newer TIS calibrations from the GM web site. I'm using a segment from a stock 07 tune I have.
I've done this for the LB7 & LLY and the ID number change with the check sum.
When I do this for the LBZ the check sum changes but not the ID number.
I use this for tuning if I need to update one of the segment. Is there a fix for this?