There is a sharp piece of metal lower left side of the drivers seat .At times the edge of this piece of steel witch is razor sharp stabs into my lower left back. If i was ever in an accident where i was rear ended i am sure this piece would take a huge chuck of flesh out of my lower back. it left a mark on my back this morning if i hadn't move i am sure it would have cut me . This defect took a long time to show up . It slowly cut through padding and then made a slice through the surface fabric. at first i thought i did this by leaving a screwdriver in my pocket until the sharp piece inside tried to cut my back. GM needs to replace my seat this is a safety hazard and can cause cuts to the lower back.