Congrats, GM! Mine is far from being paid off, but I will reach 36K miles today. No more warranty, and now the worry about mods killing the warranty are gone.
Paid off my 02 a year ago. It was both good and bad. Good that it was finally paid off, bad that the warranty ended. No problems yet though. (Knock on wood).
I financed through Ford for 7k when I got mine so I could get another thousand off the price. Paid it off two months later. It is a nice feeling to have it free and clear.