drain cooling system on 2000 GMC Yukon XL 1500

How to drain the cooling system in a 2000 Yukon with a 5.3 l engine

by in Big Pine, CA on July 18, 2010
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1 answer
ANSWER by , July 18, 2010
There is a drain cock in the radiator (I think drivers side). There is also a drain plug to allow coolant out of the engine block but my information did not give a location.