I have an 04 chevy blazer and I was on my way home the other day from a 2 1/2 hr drive and shortly before I puled into the neighborhood it started spewing white steam/smoke out of the drivers side by the headlight. Today I started and ran it after replacing the upper rad hose, for 5-10 minutes it started doing it again and it looks like it's leaking under a fitting on the radiator. Is this the radiator leaking or is there another hidden line or could it even be as simple as a gasket on the radiator?

 

might be the water pump..


you have your trans cooler lines and the a/c lines.


likely water pump. could be thermo stat, not the one on the radiator (not the cap).

 

no gaskets in the radiator - side crimp on radiator could be leaking or if you have the engine remote cooler it could be leaking around where the fitting ties in either way time for a new radiator

 

I have a 91 blazer 4x4 that overheats and the oil pressure gauge is all the way up to 80 I changed the thermostat and still does it when it overheats I turn the heater on and takes the temp down some and it does push out hot air when it gets to hot it pushes antifreeze out but hasn't done that since I changed the thermostat any suggestions I want my daughter to drive this and needs to be reliable thanks

 

Ok thank you everyone for responding I looked at it yesterday filled the rad up after I took the plastic fan well thing off and let it run for a while and found where the leak is and it's right where the plastic is crimped on by the upper rad hose. I tried to do a temporary redneck repair with some silicon gasket maker but that held for all of 2 minutes so it looks like I'm investing in a new rad. Thanks again for everyone's responses I really appreciate all the help

 

If the plastic is not cracked try one thing before you buy a new radiator - remove the radiator and take a pair of vice grips or channel locks ect and try squeezing the crimps tighter i've have been lucky a few times and sealed the leak - run down all the crimps on that end of the radiator