GM Mini MDI reviews Overview Reviews 0 Buy GM Mini MDI GM Mini MDI (Multiple Diagnostic Interface) for wireless ECU reprogramming utilizing J2534. Hardware kit only.GM Mini MDI - GM Diagnostic Essential Tools 2833 In stock $1,185.84 GM Mini MDI is now in your shopping cart Add to comparison table Remove from comparison table Compare 0 Order via: 0 reviews for GM Mini MDI Write a review Your name Email Website Title Rate product clear Review → Refresh CAPTCHA Ctrl+Enter