1996 GMC Safari Owner's Manual - Page 41

3. To make the lap part tight, pull down on the buckle ' end of the belt as you pull up on the shoulder part. The lappart of the belt should be worn low and snug on the hips, just touching the thighs. In a crash, this applies force to the strong pelvic bones. And you'd be less likely to slide under the lap belt. If you slid under it, the belt would apply force at your abdomen. This could cause serious or even fatal injuries. The shoulder belt should go over the shoulder and across the chest. These parts of the body are best ab1.e tGtake belt restraining forces. The safety belt locks if there's a sudden stop or a crash. 1-33