Originally Posted by kickoff877
Hey man, how are you. I'm having the same problem with my car overheating, a 2001 Bonneville. For some reason I can't access the link provided here. Could you tell me what the steps you followed are? Thanks.
There is a bleeder valve n top of the T-Stat housing. Open that to bleed out air. Also, when the system is warm, you can squeeze the upper radiator hose a few times to help push fluid/air through the system. Top off you coolant reservoir after bleeding.
You may need to replace your T-Stat. Here'* a great How To for doing just that http://www.gmforum.com/t278803/