I own a 99 Tahoe and recently I have found that the exhaust pipe blows white smoke with a hint of antifreeze smell coming from the exhaust. Could this possibly be the Intake gasket going bad? How hard is this to change for the village idiot? It is a V8 - 350 Vin R with 130000 miles on it. Any help with this problem would be greatly appreciated.

Read this thread http://www.automotiveforums.com/vbulletin/showthread.php?t=338753

If the Intake Gaskets have never been replaced, then the chances are very high that is your issue.

//2000CAYukon