Im actually going to flush my radiator tomorrow and put new coolant back in (same stuff) any tips on doing this job? and bleeding out the air was another question i had. whats the best way to do that?

 

See if the automotive place you go to has a cooling system cleaner. Flushing the system is IMO a must do, so get a back flush kit that hooks up to a garden hose.
For the air, the "old school" method that has the test of time is:
Fill the rad with the coolant & let it idle to normal operating temp so the thermostat is open with the cap off.
Check the level.
Lift or drive on a ramp so the PS (rad cap side) is elevated.
Then check the coolant level & top up as needed.
Rev it to 1000 or so for a minute & let it idle. Do that a few times to "burp" the system of air. Keep an eye on the rad level & make sure your reservoir tank has the right amount of coolant in it.
You can run the heater in the cab for another way to check for air in the cooling system. If it's just ambient air temp = you have an air bubble. If it's warm/hot air = it should be free from air.

But run the 1000+ rpm cycle at least 3 times.

 

Thanks! got it flushed today. much better, the other stuff was like mud. it took a while to get it all out and coming out the bottom clear. that stuff was nasty. thanks again for the tips Rottidog

 

What is the capacity of the cooling system for S10 Blazers ?