Im trying to flush the cooling system on my 99 seville but can not find the drain for the radiator. Can someone please tell me how to flush the system. Im lost...........:confused:

The drain plug is probably on the left (driver) side. If you remove the air intake box by loosening the screw that tightens the intake rubber hose to the throttle body, you can lift the air box containing the air filter and remove the plastic mount. I'm going by my '94 Eldorado so your 99 Seville may have a different set up. Once the air box is removed, look under the radiator hose. You will likely see a plug where you can drain the radiator. When you refill, you should use 50/50 with distilled water.

Thanks mac. I looked but there wasnt a drain there. I found a 1/4" hose on the pasenger side at the bottom of the radiator. When I pulled it lose the radiator drained. Oh how I wish for the good old days when all you had to do was remove the cap and open the drain at the bottom.
Thanks again for your help mac.