2009 GMC Acadia Owner's Manual - Page 26

1-22 Seats and Restraint System Q: What is wrong with this? { CAUTION You can be seriously injured if your belt goes over an armrest like this. The belt would be much too high. In a crash, you can slide under the belt. The belt force would then be applied on the abdomen, not on the pelvic bones, and that could cause serious or fatal injuries. Be sure the belt goes under the armrests. Q: What is wrong with this? A: The belt is over an armrest. A: The shoulder belt is worn under the arm. It should be worn over the shoulder at all times.