Question about 2001 Chevrolet Blazer

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Draining coolate from 2002 blazer

How do you drain the radiator. There looks like a drian on pass. side below the hose, has a common screw head that looks like can only go one way. The kind like you would see on a bathroom stall wall. Is there a tool needed to back this out. Never seen anthing like this.

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Sometimes the drain valves are hard to reach because of plastic fan shrouds, unlike older cars were one could easily open up the valve. A trick I used this fall on my 96 1500, was to use a Jack Rabbit hand pump from the radiator cap main fill access, and then once the tube was filled, hold it over a shallow bucket that is lower than the bottom of the radiator.... and the old antifreeze will be siphened out. make sure the tube is at the bottom of the inside of the radiator, so you don't get air in the line and stop the process. It's not as good as a flush but you will get new antifreeze into your system.
Good luck.

Posted on Nov 21, 2008

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