After about 4 months, three dealerships and many conversations with mechanics I finally found the fix to this problem. One dealer had no idea and the other wanted to replace my transmission. At the third dealership (Al Serra) the transmission expert recalled an issue back in the 2000-2001 time frame. After speaking to the Engineers at GM in Warren Michigan they suggested disconnecting the battery cables for 8 hours and this would re-set the shifting sequence. It's been about a week and I have had no sputtering issues. I hope this helps others with the same issue as this could have cost up-wards of $2000.
Thanks for your help.
Sunday, November 1st, 2009 AT 12:40 PM