Definitely worth the cost and peace of mind. I had my Extended warranty through Fichtner.
I did a lot of searching and they provide the best Extended Warranty for the cost...by far.
I've used it on my '01 and '04. Never had a problem with anything being covered. Make sure you get the bumper to bumper warranty. I'll use them again when I purchase my C7 this year.
The person you want to talk to is Dennis Fichtner...he handles all Extended Warranty plans.... Below is his info.
Dennis Fichtner
dfichtner@fichtnerchevrolet.com
gmpp@fichtnerchevrolet.com
406-628-4618, Ext 105