Question about 1998 GMC Yukon

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Chaning coolant I am trying to drain the radiator in my 1998 GMC Yukon. Can't find the drain valve

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Sorry but most newer radiators don't have a petcock. I just changed mine by removing the lower radiator hose.Most newer cars only hold a gallon or so of antifreeze anyway. If you have five year coolant (dexcool) DO NOT MIX WITH ANY OTHER BRAND regardless of what the bottles tell you. If you mix red coolant with green it will turn into a radiator and heater core clogging glop.

Posted on Jun 08, 2008

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