On certain vehicles, a bolt that attaches the rear seat belt retractor(s) may be missing. As a result, the seat belt may not work as designed in a crash.
Safety Risk
A seat belt that does not work properly could increase the risk of injury in a crash.
Corrective Actions
General Motors will notify owners by mail and instruct you to take your vehicle to check that the rear seat belt retractor bolts are properly installed. The dealer will replace or tighten the bolt(s), as required.