Truck Transmission Control Modules

This collection lists transmission control modules (TCM) for heavy-duty commercial trucks from Freightliner, International, Kenworth, Peterbilt, Mack, Volvo, Western Star and other makes. The TCM controls shift timing and communicates with the engine and vehicle network. It is often matched to a specific transmission family and software level.

Identifying the correct replacement

Start with the OEM or manufacturer part number on the existing unit and search for it using the search bar. Similar-looking parts can have different part numbers depending on the truck model, engine, production date and optional equipment. Some TCMs require calibration or software loading after installation, so confirm programming requirements before ordering.

Condition, cores and programming

Each listing states the condition of the part and whether a core deposit or programming may be required. Use the truck-make links above to narrow the list to your truck, and contact our parts team with your truck details if you are not sure which part you need.