Okay folks sounds like I'm not the only one have this problem. I have a 2001 Tahoe that has given good service except for the intermediate shaft. The first one was replaced 2 months after I bought it and had been greased twice since and was replaced again(per the dealer paperwork) Feb 2005. Yep you guessed it, somethings gotta be done again. Has there been any new guidelines or anything Chevy is doing thats working now.
Sam