BACK WINDOW ON MY 2006 GMC ENVOY EXPLODED WHEN THE TAILGATE WAS CLOSED. GLASS WAS NOT PREVIOUSLY DAMAGED IN ANY WAY. HINGES HAD JUST THE DAY BEFORE BEGUN MAKING A NOISE WHEN TAILGATE WAS OPENED AND CLOSED. MY HUSBAND'S HAND WAS CUT. GLASS FLEW 20 FT. OUT OF GARAGE WHERE CAR WAS PARKED. NOISE OF EXPLOSION WAS LIKE A LIGHTENING STRIKE OR GUNSHOT. *TR