1997 GMC Suburban Owner's Manual - Page 38

Q: What's wrong with this? You can be seriously injured you wear the if shoulder belt under your arm. a crash, your In body would move toofar forward, which would increase the chance head and neck injury. of 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 liveror spleen. A: The shoulder belt is worn under the arm. It should be worn over the shoulder at all times. 1-28