i have my tune that i have been slowly working on, and it makes it run but my trans wont shift just stuck in 3rd. my donor car was a 06 Silverado but my trans is a 2wd out of a 03 trailblazer.
so i took my toon and an 03 camaro stock toon side by side and changed everything in the trans folder that was different. then tried to write it and it wont upload and says wrong ecm how can that be?
Im lost as to what i did wrong?