Hi I am new to this forum but I have a 1987 S10 Blaezr 4X4with2.5 V6AT with an overheating problem. Changed out the thermostat, water pumplooks okI flushed the system and that didn't help. at a lost??

 

are the fins of the rad full of dust and dirt? Try flushing it out with a hose from the front side

 

You dont want to overheat it too often. It will mess up the motor and you will end up replacing it. I had that happen to mine.

Is it leaking coolant anywhere? My son is a motorhead, he just fighting with my electrical system in my blazer right now.

Silly Country Girl