What We Do
Transmission Control Module Programming in San Antonio
Updating your vehicle’s transmission control software for peak reliability
In today’s vehicles, transmission performance depends as much on software as it does on hardware. At
Kosub Transmission Service Inc, we specialize in
Transmission Control Module (TCM) programming and software updates, a critical step in modern transmission diagnostics, rebuilding, and replacement.
Why Software Updates Matter
Over the past five years, software updates have become essential to proper transmission operation. Many transmission and vehicle manufacturers release new calibrations after production to correct shift timing, pressure regulation, and drivability issues that were not perfected when the vehicle left the assembly line. Without these updates, your transmission may exhibit harsh shifting, delayed engagement, or inconsistent performance even after mechanical repair.
Our TCM Programming & Updating Process
- In-House Calibration & Programming: We have the equipment and technical expertise to perform all TCM programming and re-flashing directly in our shop—no third-party service required.
- Diagnostic Verification: Before any update, we scan and confirm existing software versions, ensuring the correct calibration file is applied for your specific make and model.
- Post-Update Testing: After programming, we perform a full transmission re-learn and test drive to verify smooth shifting, proper gear engagement, and optimized performance.
Vehicles & Systems We Service
Our team is experienced with the most advanced domestic transmission systems, including Ford 10R80, Chevrolet/GMC 6L80E, 8L90E, 10L80E, and other electronically controlled transmissions found in Chevrolet, GMC, Dodge, RAM, Ford, Lincoln, Cadillac, and Jeep vehicles.
Whether we are performing a diagnostic evaluation, a complete rebuild, or installing a JASPER® remanufactured transmission, proper TCM programming ensures your transmission performs exactly as the manufacturer intended—smooth, responsive, and reliable.
Why Choose Us
- Factory-level TCM programming and updating tools
- Certified technicians trained in electronic transmission systems
- Full in-house service for diagnostics, rebuilds, and software calibration
- Accurate solutions for shifting complaints and drivability issues
Get the Most from Your Transmission
If you’re experiencing shifting problems or installing a new or rebuilt transmission, a TCM software update may be the key to restoring full performance.
