SS Seat Belt Cables Wear Out
Chevy SS owners might need to send out an SOS when their seat belt tensioner cables break. [The recalled] Chevrolet SS cars were built May 14, 2013, through April 27, 2016.
GM doesn't know when the recall will begin. When it does cables that need to get replaced will get swapped out, and those that look ok will get some new guides to prevent any future problems.
More information on carcomplaints.com