TMC Auto Repair
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The powertrain professionals. Now located in Walnut, CA. TMC Auto Repair is built on professionalism, hard work, and good, old-fashion mechanics.
04/21/2026
Modern transmissions have computers that learn your driving habits and adjust shift points accordingly. When that computer gets confused or fails, shifting becomes erratic. Our scan tools can read those codes and reprogram when needed.
04/07/2026
Towing a trailer or hauling heavy loads? Your transmission is working overtime and running hotter than normal. A transmission cooler installation and regular fluid changes can save you thousands in premature transmission failure.
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Telephone
Website
Address
20241 Valley Boulevard Ste A
Walnut, CA
91789
Opening Hours
| Monday | 9am - 5pm |
| Tuesday | 9am - 5pm |
| Wednesday | 9am - 5pm |
| Thursday | 9am - 5pm |
| Friday | 9am - 5pm |
