Defect Involved

General Motors has decided that a defect which relates to motor vehicle safety exists in certain 1991 S/T 4-door utility vehicles. These vehicles may exhibit a condition in which a rear seat belt buckle release button can stick in the unlatched (down) position under certain conditions. Angular tongue insertion, partial tongue insertion along with a prying action by the occupant, or a very high load application to the top of the latch cover can cause the latch cover to move relative to the latch mechanism and become partially disassembled. If the cover moves far enough, it can create an interference condition with the latch release button. When it does, the seat belt buckle cannot be latched. This can occur on any of the three rear seat belt buckles. This condition would be immediately apparent to the passenger. There would be no audible "click" and the tongue would push back out of the buckle. However, the passenger would not be able to use the seat belt in that seating position.

To prevent the possibility of this condition occurring, dealers are to replace the three rear seat belt buckles (one assembly).