1. Park your vehicle on a level surface and apply the parking brake.
2. Turn off the engine and allow it to cool down completely.
3. Locate the transmission cooler lines. They are typically located near the transmission and run to the radiator.
4. Use a wrench to loosen the bolts that hold the transmission cooler lines in place.
5. Once the bolts are loose, you can remove the transmission cooler lines by pulling them out of the fittings.
6. Discard the old transmission cooler lines.
7. Install the new transmission cooler lines by inserting them into the fittings and tightening the bolts.