How long does it take to rebuild an automatic transmission? Rebuilding an automatic transmission is not a simple process. The transmission is completely stripped back and rebuilt, with any worn or damaged parts being replaced. Once the process is complete, the transmission should be in full working order again, as long as every step is completed carefully and accurately. Can a 5 speed transmission be remanufactured? Jeep Wrangler 87-02 YJ TJ 2.5L 4CYL. AX5 5-Speed Remanufactured Transmission One of the greatest benefits of manual transmissions is that they last longer than automatic transmissions do, but if you have really put...