"I do know that when it was running hotter than usual the other day, the fan was not running as fast as it used too. It was slow and looked wobbly."

Should not be turning slow. Sounds shot to me. If you don't know how old the clutch is just replace it. They can go bad gradually. You can still test it by having someone turn the engine (at operateing temp) off while you watch the fan. It shouldn't make more than a turn if that. Check that wobbling by trying to rock the fan sideways. Also watch for play at the water pump. Make sure you get one that specifies for a/c.

http://www.napaonline.com/Catalog/Ca...312_0382753852

 

Will do. I know the clutch fan that is on now is the 2001 original. I have owned the Blazer since 2003. Thanks!