Maybe, maybe not. Here are some of the sources I found:
This describes the issue.
http://www.autosafety.org/GM-CK/background.htm This one is a bit more to the point. It starts out noting 1800 people have been killed, and about 30 a year are going according to them:
http://www.citizen.org/pressroom/release.cfm?ID=702 A letter about it:
http://consumerlawpage.com/article/gm-open-letter.shtml The tanks are not critical to my enjoyment of the vehicle. If you read through all this stuff you'll see inboard tanks are safer. And Canyon, that cage was a suggested improvement.
