2004 Chevy Blazer 4d 4.2L

if you cannot find the "petcock" at the bottom of the radiator...pull the lower hose OFF...catch all fluids to bring back to the autoparts store for recycling~

I think I see the petcock. How do you open it?

I believe I see the petcock on the driver side at bottom of radiator. How do I get it open?

lefty-loosey...rightey-tightey...kind 0 kindy-garten but is true~

you could use a pliers...but if it's a plastic one would go gentle with that~

How do you get to it? Get under the car? From th3e top?

use a long needlenose pliers...honestly HAS to be at the lowest part on your radiator and SHOULD be easy to get to....after all is there so that you CAN flush the coolant~