This is the tune out of a stock 08 GMC 3500 C&C 4x4
B bmc1025 Member Jan 25, 2013 521 0 16 Big Bone, KY Feb 25, 2016 #1 This is the tune out of a stock 08 GMC 3500 C&C 4x4 Attachments 08_CNC_4x4_Engine.ctz 1.4 MB · Views: 67 08_CNC_4x4_Trans.ctz 97.9 KB · Views: 12