This DIY is for a 2005 Corolla .
First you have to drain the radiator in a safe manor .
Then you flush out the over flow tank so that you do not mix fluids plus keep all fluids new and not to contaminate the newer fluid .
With pliers you can easily remove the clamps to the upper and lower hose .
Make sure you replace the clamps and to grease the inner part of the hoses so if you ever need to go back there it will not stick and be easily to remove .
Match up the hoses .
Make sure you burp the system and check the clamps .
More DIY at www.corollacarclub.proboards,com