2003 Chevrolet Blazer Owner's Manual - Page 27

Q: What's wrong with this? You can be seriously injuredif you wear the shoulder belt under your arm. In a crash, your body would move too far forward, which would increase the chance of head and neck injury. Also, the belt would apply too much force to the ribs, which aren't as strong as shoulder bones. You could also severely injure internal organs like your liver or spleen. I A: The shoulder belt is worn under the arm. It should L be worn over the shoulder at all times. 1-20