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An automatic transmission (AT) assembly is responsible for controlling the power delivery from the engine to the wheels and shifting gears at specified RPMs without the need for manual gear engagement by the driver. Automatic transmissions include a variety of gears, bands, clutches, valve bodies, electronic servos and solenoids, and more that are controlled by input from the engine control module or other sources. This ensures that the transmission's gear engagement and operation always matches the current operating conditions of the vehicle. Transmissions require regular maintenance and lubrication from transmission fluid to ensure proper operation and longevity, and may have a service interval specified in your owners manual for regular flushing and service. While transmission fluid leaks may indicate worn transmission seals, transmission fluid that smells burnt can be a sign of a failing or damaged transmission. Transmission fluid should typically smell sweet and be a clear or red color free of visible debris and grit. If the transmission fluid is brown, black, or smells noticeably burnt, this is often a symptom of internal transmission component failure, overheating, or other damage. Signs that your transmission may be experiencing issues include hard shifts, slipping, clunking, and whining sounds, as well as noticeable transmission fluid leaks beneath the vehicle or between the transmission and engine. Routine transmission maintenance tasks include checking and changing transmission fluid, inspecting for leaks, and adjusting the shift linkage if necessary to maintain a healthy transmission that functions as it should. When the transmission experiences significant issues, it's recommended to have it diagnosed and repaired or replaced by a professional shop near you. In some cases, it may cost more to rebuild a transmission than to replace the entire transmission assembly, so be sure to complete your diagnosis and research your options before getting started. Shop O'Reilly Auto Parts for replacement transmission assembly options, transmission seals, cooling lines, and fluid for a complete, confident repair.
