Question about 2000 Cadillac DeVille
Drain plug should be on the drivers side of the radiator, lower back (towards the engine) When placing the drain plug on place use some oil on the O ring to ensure a good seal when tightening it back in place. Good luck and keep me posted.
Posted on Jun 30, 2009
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Posted on Jan 02, 2017
SOURCE: I have a 2000 cadillac deville
You can rent a cooling system preasure tester at a parts store. These engines run so close to boiling that they must be able to hold presure or they overheat. Presurize the system and check for even the smallest leaks at all hose connections. I fought this problem for a long time before I figured it out.
Posted on Nov 20, 2008
Most of the times when these valves break they are pretty easy to get out by simply turn it with a FLAT screw driver that skinny enough to fit inside that hole. However if this is DOES NOT work a cheaper alternative is to get some JB weld or EPOXY and seal that hole shut completely there is on specifically for radiator that can with stand pressure and heat. It comes ina stick for that you have to kneed together available at AUTO ZONE. Knead together and it become warm to the touch its like play dough in texture but it dries rock hard and can be sanded even painted after it dries. To apply make sure surface is clean and dry it will dry in 15 minutes(ROCK HARD) good product. Don't worry if you sealed the drain plug up you can still drain your radiator in the future but releasing the lower radiator hose. Good luck and thanks for using FIX YA
Posted on Feb 01, 2009
The textbook method is to remove the drain plug on the bottom of the radiator.
Most drain plug is make of inexpensive nylon/plastic and it may fall apart while you turn it.
The professional method is to loosen the lower radiator clamp and drop to lower radiator hose.
Drain the coolant onto a large drain pan and recycle the coolant
I just did a FREE write up on air purge from coolant system and how to detect initial state of blown head gasket at the Fixya tip selection.
or follow link below.
Posted on Dec 06, 2009
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