how to perform coolant flush on a Pontiac Sunfire?

[Chip]

I have a pontiac sunfire and I need to perform a coolant flush on it due to two different coolants mixed together, but I don't know how. Could someone help me do this step by step?
It's a 1997 model
how do you bleed the air out?

 

[Goatman]

Easiest way is to take it in and have it power flushed ..
that way all of the old mixed coolant is out of the system which can cause problems if not flushed completely..
also there is a special bleed procedure to get all of the air out of the system (there are bleeder screws) that are in the coolant crossover tube ..
otherwise you could be trying to flush it for days, and have overheating issues ..