How much does a TCM cost to replace?
In most passenger cars, replacing a failed Transmission Control Module (TCM) will cost roughly $300 to $2,500 in total, depending on the part you choose, the vehicle, and labor. The price varies with whether you install a salvage, remanufactured, or new OEM unit, and whether the shop must program or calibrate the module after installation. The TCM governs automatic shifting by interpreting signals from engine sensors, and failures can cause symptoms such as rough shifting, slipping, or going into limp mode, making a proper diagnosis essential before replacement.
The following article outlines the main cost drivers, typical price ranges, and factors to consider when deciding how to proceed with a TCM replacement.
Cost components
Costs break down into three main areas: parts, labor, and programming/diagnostics. The following list outlines each area and typical ranges.
- Part options and typical prices
- Used/Salvage TCM: approximately $100-$350
- Remanufactured/Rebuilt TCM: approximately $250-$600
- New OEM TCM: approximately $500-$1,400
- Aftermarket/new TCM: approximately $150-$900
- Labor to remove and install the TCM
- Typical labor: 2-6 hours depending on vehicle; regional rates vary
- Labor rate: roughly $75-$150 per hour in many shops; dealer rates can be $150-$200+ per hour
- Programming and calibration
- Many cars require programming or reflash after installation: $50-$350 for shop tools, sometimes $200-$600 if performed at a dealer
- Some vehicles don't require additional programming after installation, but software updates may still be needed
Part choice drives upfront cost and warranty coverage. Remanufactured units often offer a balance of cost and reliability, while new OEM parts are the most expensive but may carry stronger dealer-backed warranties.
Typical costs by vehicle class
Costs vary by vehicle size, transmission type, and whether you shop at a dealership or independent shop. The following ranges give a sense of what to expect in common scenarios.
- Economy/compact cars (basic TCMs): approximately $400-$1,200 total
- Midsize cars and SUVs: approximately $600-$1,800 total
- Luxury or high-performance vehicles (complex transmissions, dealer-only units): approximately $1,200-$2,500+ total
Prices can spike for models with immobilizer-related programming or other manufacturer-specific requirements. Always request a written quote that itemizes parts, labor, and programming.
Saving tips and next steps
Before committing to a TCM replacement, consider these steps to potentially lower costs or avoid unnecessary work:
- Get a diagnostic to confirm the TCM is at fault rather than a sensor or wiring issue.
- Ask whether a software update or reflash to the current module is possible without replacement.
- Request quotes for used, remanufactured, and new OEM parts, and compare warranties.
- Consider a remanufactured unit with a solid warranty as a value option in many cases.
Conclusion: Replacing a TCM can be a sizable expense, but costs are highly variable. With careful diagnosis and price shopping, most drivers can find a solution that balances reliability and price.
Summary: The price to replace a TCM typically ranges from about $300 to $2,500, depending on part choice, labor, and whether programming is required. Start with a professional diagnosis and obtain multiple quotes to identify the best option for your car and budget.
