What do use to disconnect the radiator cooler clips

You need to use an A/C line disconnect tool. I attached the process below that will show this in more detail. Basically these press in and are held in by a clip that when you put the A/C line tool in it releases the clip and you pull the line out. Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car.

https://www.2carpros.com/articles/how-to-replace-a-car-radiator

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.