1994 GMC Suburban Owner's Manual - Page 36

Q: What's wrong with this? A: I The shoulder belt is worn under the arm. It should be worn over the shoulder at all times. A CAUTION: You can be seriouslyinjured if you wear the shoulder belt under your arm. In a crash, your body would move far forward, too which would increase chance of head and neck injury.Also, the the belt wouldapply 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. 1-24