Part of my "retirement package" was the Tech 2 scan tool that I protected for years. It's obsolete in the dealership, can't update but it works on all my "modern" GM rigs, 1999 Tahoe, 2000 (old body GM400 platform) K2500 std cab manual transmission & transfer case, 2005 Bonneville, a 2003 & 2007 Grand Prix.
