6 0 Allison 1000 PTS Transmission Control Module (TCM) for a 2008 Chevrolet C4500 $199.99 USD (Used) 2007 Allison (AT), TRANSMISSION ECM- ECM Model: A40, Part Number: 29545321, Serial Number: BK5321N072141YT9, 12 Volts, Transmission Stock #P-73082, Transmission Model: 1000PTS, Plug... ConditionUsedEngine Model8.1LFits To Make(s)ChevroletFits To Model(s)C4500Will Fit Year(s)2008Part Number29545321Stock NumberP-74447 MLS Number12683459CategoryTransmission Control Modules (TCM) Last Updated10/4/2025 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info