1994 GMC Sonoma Owner's Manual - Page 33

To make the belt shorter, pull its free end as shown until the belt is snug. Buckle, position and release itthe same way as the lap part of a lap-shoulder belt. If the belt isn't long enough, see "Safety Belt Extender" at the end of this section. Make sure the release button on the buckle is positioned so you would be able to unbuckle the safety belt quickly if you ever had to. Rear Seat Passengers (Extended CabJump Seats) Lap Belt These are reserve seating positions equipped with lap belts only. It's very important for rear seat passengers to buckle up! Accident statistics show that unbelted people in the rear seat are hurt more often in crasks than those who are wearing safety belts.