Three full size pickups rated only "marginal" in latest side impact tests by IIHS. Bigger is not automatically safer. Worst performers: Chevy, Dodge, and Nissan. Best performers: F150, Tundra, Ridgeline.
http://www.iihs.org/news/rss/pr021109.html
http://www.iihs.org/news/rss/pr021109.html