Starter problems of the 2010 Buick Lucerne

2010 Buick Lucerne had been driven home and was cooling in driveway. After two hours, starter would turn over but engine would not start. Began to smell burning plastic inside vehicle. Found symptoms of problem described in gm service bulletin 15-na-051. After removing back passenger seat bottom cushion, checked inside rear fuse box and found that fuel pump relay had shorted and melted the relay and damaged adjacent fuses with burn marks across surface of fuse box. Waiting for vehicle to be towed to mechanic for fuse box replacement and to diagnose other potential damage caused by relay failure. Mileage at time of failure was 60,000. According to the bulletin, bracket on bottom of seat cushion pushes against the fuse box lid, which pushes against the fuel pump relay causing damage to the relay and fuse box. Why has there been no recall to repair this dangerous design flaw?.