Transmission repair involves fixing issues related to a vehicle's transmission, which is the system that transfers power from the engine to the wheels. Common problems include slipping gears, unusual noises, or fluid leaks. Technicians often diagnose these issues by inspecting the transmission fluid and checking for error codes in the vehicle's computer system. The repair process may include replacing worn parts, such as clutches or seals, or even a complete transmission rebuild. Regular maintenance, like fluid changes, can help prevent major repairs and extend the life of the transmission. Proper care ensures smoother driving and better vehicle performance.