1994 Chevrolet Suburban Owner's Manual - Page 41

The lappart of the belt should be worn low and snug on the hips, just touching the thighs. Ina 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 able to take belt restraining forces. The safety belt locks if there's a sudden stop or a crash. To unlatch the belt, just push the button on the buckle. 1-30