View 5 Photos View 0 Videos 2006 Allison C7500 Transmission Control Module (TCM) for a GMC C7500 $350 USD Transmission Control Module, Base PN: 29545321, End Model PN: 94668486, Model: A40, CIN: 45004RY0013, Guaranteed Reprogrammable. Call DTI Trucks for More Information and Shipping Quotes ConditionUsedFits To Make(s)GMCFits To Model(s)C7500Stock Number78025 MLS Number13984848CategoryTransmission Control Modules (TCM) Last Updated5/14/2026 LocationWheat Ridge, CO, US Sold ByDTI Truck Parts (833) 614-___ SHOWNUMBERCall Seller Email Seller Save More Info