2004 Chevrolet Tahoe LS 4WD 4dr SUV (4.8L 8cyl 4A)
Transmission failed at 81,000.
Transmission fluid flushed and transfer case fluid serviced at 47,000 miles by Chevy dealer at a cost of $235.00.
Service representative told me that the seal between the transmission and (I believe he said) the transfer case failed and the transmission fluid went into the transfer case.
Caused transmission fluid to be three quarts low from the internal leak.
Even though no fluid ever leaked out of the vehicle, the GM representative said it was my fault because the transmission fluid should have been checked at each oil change.
The transmission failed while I was driving down the highway.
Total cost of GM remanufactured transmission $3,922 installed.
Build a better transmission or stand behind them when they fail.