I noticed the other day that I had some antifreeze on the ground, and I already had my intake manifold gasket replaced and am now using universal antifreeze and not dexcool. The antifreeze was at the front drivers side, so I knew the manifold gasket did not go bad again. So, I drove to work and there was a little on the ground, checked coolant levels, and the resovior was a little low, so I filled it up. Got home and let it cool off, and started it with the hood open and I noticed that facing the front of the truck on the plastic cap, there is a little pin hole that is spraying antifreeze. Question, is changing the radiator a difficult job? I never replaced one, so that is why I am asking. Is there a place where I can get instructions on how to do it? Sorry for writing a novel, but I know this is the place to go about anything to do with a Blazer.. Thanks in advance.

 

It is not hard at all. I have done several.

1) Drain coolant
2) disconnect the upper and lower rad hoses
3) remove the fan shroud from the rad and slid it toward the engine
4) disconnect the oil cooler lines (if you have them) and trans cooler lines from the sides of the rad.
5) unbolt the top of the cover and remove the top rad supports
6) remove rad

I have not done one on the Blazer yet so depending on space you may need to remove the fan and the fan shroud if there is not enough room to slide the shroud toward the engine.