I have a 2015 2500 6.7/68 auto with single efi live tune never had any issues until fri when took to dealership. They fixed brake interlock, airbag module, an waterpump. Got my truck back an now check engine light, abs light, and electrical light on, speedometer an park assist not working their blaming the tune ofcourse but wondering if anyone else has run into this. Or if I just need to let them flash everything back to stock an reload tune if they can fix rest? Thanks