We have a 2003 Yukon XL, 2500 6.0 used for towing our offshore boat. The truck has 62,000 miles, it was used as my wife's daily driver for the first three years owned. Now it just goes on vacations, boat towing and snow storms.
About 3 weeks ago I discovered a noise, sounded like a dry U-joint. On 12/14 the local Chevy dealer accurately diagnosed the problem and told me that they had seen the problem before, loss of fluid due to hole caused by internal failure. "Needs new case, estimate to start is $1,326.00 estimate doesn't include internal failure may be higher once taken apart". The service tech said it could be a couple hundred more, depending on what they find on disassembly.
I made a service appointment for Monday the 17th. at the GMC dealer where I purchased this vehicle (and three others in the past 6 years). Over the weekend I did my research and found this thread. I printed the entire thread for the Service Manager and took it and my truck to my dealer on the 17th. I also called GM Customer Support the same day, and explained the entire story and as much as I could relate about all 30-some others of you in this thread who had the same issue. GM Customer Support rep told me he would call me on Tuesday afternoon with a response, but no promises given. By mid-day on Tuesday the Service Manager called to tell me the repair would cost $3,400. I knew he had been in contact with GM Customer Support. He went on to say that it would all be covered except for the Illinois Sales Tax on the parts, or $100 - $150.
The Service Manager mentioned how well maintained my vehicle was and it seemed that we recently started getting the vehicle serviced elsewhere. He said he wanted us back as a service customer and "recommended" the 60,000 mile maintenance package. It was hard to say no when he just told me my repair bill would almost be paid in full. The parts were ordered and it looks like I'll be lucky if I get it back by Friday. More likely next week after the holiday.
The GM Support person said it was good that I called while the truck was there and they could work directly with the dealer before the repairs were completed.
I'll post an update when I get the truck back.