A: There is no real typical repair cost for a transmission repair. There are too many variations between transmission units and depends on the complexity of the transmission design. Often there is a misconception between repairing a transmission and rebuilding a transmission. A transmission rebuild involves the removal of the unit, complete disassembly, replacing all of the seals and gaskets, replace any of the damaged bearings gears or drums, replacing or rebuilding the valve body, rebuilding the worn clutch packs, replacing the solenoid packs as needed, fill with new fluid(8 to 16 qts.), installing a reconditioned torque converter. Plus make any factory suggested updates. There is nothing typical about a transmission “repair”. The transmission repair may be as simple as replacing external speed sensors and a fluid service at a much lower price than a complete transmission rebuild.