WAS PULLING INTO WORK PARKING LOT WHEN A HEARD A QUICK BANG FOLLOWED BY SCREECHING NOISE. I TRIED PARKING BUT COULD NOT GO INTO REVERSE. FORWARD GEARS APPEAR TO WORK FINE BUT REVERSE IS COMPLETELY GONE. MY 2002 TRAILBLAZER HAS UNDER 70,000 MILES ON IT AND HAS ALWAYS BEEN MAINTAINED IN EXCELLENT CONDITION. AFTER READING SOME OF THE COMPLAINTS ONLINE, I SUSPECT THAT ONCE I TAKE IT FOR REPAIR I WILL BE TOLD IT IS THE SUN SHELL AND CORRESPONDING GEARS. I'M GLAD I WASN'T IN A DANGEROUS POSITION WHEN THE TRANNY WENT OUT BUT I COMPLETELY AGREE THAT THE SUN SHELL ISSUE IN THESE TRAILBLAZERS IS A HUGE SAFETY ISSUE AND IT'S SICKENING THAT AS OF TODAY A RECALL TO CORRECT THE ISSUE IS NOT OUT THERE! I SUPPOSE IT TAKES A FEW TRAGEDIES FOR SOMEONE TO DO SOMETHING ABOUT IT BUT I'M HOPING THAT'S NOT THE CASE THIS TIME. *TR