Pass-Thru programming on all vehicles built since 1993 and willsupport all vehicles into the future.The GM MDI willīe required to perform diagnostics onselected NAO vehicles for model year 2009. The GM MDI is initially being introduced with Pass-Thruprogramming capabilities only. GM MDI (Multiple Diagnostic Interface) for wireless ECU reprogramming utilizing J2534. GM MDI Communication Module with TiS SPS Subscription (Kellie OBDING)