Looking to see how I should go about getting the new 6l90e trans file into the new transmission controller.
My dealer is telling me I can not flash a zl1 trans cal into the controller because the vin will not match the engine side and will cause issues.
How do I go about setting up the software for the zl1 trans in this car.
can i just use the 6l80e tune file and full flash the trans controller?
thanks,

