1996 Buick LeSabre Owner's Manual - Page 38

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 lap part of the belt shouldbe 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 likely less to slide under thelap 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 restrainingforces.