How do you replace trans line on a 92 Buick Roadmaster?

To replace the transmission line on a 1992 Buick Roadmaster, first, ensure the vehicle is safely elevated and supported. Disconnect the old transmission line from the transmission and radiator, using a line wrench to prevent damage. Install the new line by threading it into place, ensuring a secure fit, and then reconnect it to the transmission and radiator. Finally, refill the Transmission Fluid and check for leaks before starting the vehicle.