SEAT FRAME INTEGRITY IS COMPROMISED. SEAT IS NOT SECURED TO THE RUNNING BOARDS. JOINTS WHERE THE TUBES ARE WELDED ARE COMPROMISED AND SEPARATED. APPEARS TO BE A FATIGUE FAILURE. IN JANUARY 2013, WITH MUCH ARGUMENT WITH GM ABOUT REPLACING THE SEAT FRAME, THEY FINALLY AGREED TO REPLACE IT FOR A DEPOSIT OF $300. THIS BEFORE GM HAD TO GO TO CONGRESS TO EXPLAIN THEIR LACK OF ACTION FOR IGNORING THE DESIGN DEFECT OF THE IGNITION SWITCH. IT'S ABOUT 4 YEARS LATER AND I'M HAVING THE EXACT SAME FAILURE OF THE COMPROMISE OF THE WELDS ON THE REPLACED 2013 FRAME. THIS TIME GM REFUSES TO DO ANYTHING ABOUT IT AS THEY SAY THEY ALREADY REPLACED IT ONCE! THIS IS THE SAME PROBLEM! I HAVE PICTURES FROM THE ORIGINAL SEAT SHOWING THE FATIGUED TUBE BREAKAGE. I HAVE NOW HAD 2 SEAT FRAMES ON THE SAME CAR AND BOTH FAILED. IN ENGINEERING WE CALL THIS STATISTICALLY SIGNIFICANT. GM NEEDS TO TAKE RESPONSIBILITY FOR THIS POOR DESIGN. IT'S JUST A MATER OF TIME UNTIL SOMEONE IS KILLED IN AN ACCIDENT CAUSE THE SEAT DOESN'T SECURE THE DRIVER. I'VE NOTICE THAT MY HIPS HURT FROM THE SEAT SLOWING MOVING OUT OF PROPER ALIGNMENT. *TR