NHTSA Complaint #704625 — 1995 CHEVROLET SILVERADO

AFTER WE HAD THE TRUCK FOR 2 YEARS, I STARTED HEARING A CLUNKING NOISE FROM THE REAR, WHEN I ACCELERATED, AND WHEN I SLOWED. AFTER A FEW MONTHS, IF I WAS TRAVELING UP A GRADE, THE TRUCK WOULD HESITATE, THEN MAKE THE CLUNKING NOISE AND LUNGE FORWARD. I TOOK IT TO ONE CHEVY DEALER, WHO TOLD ME IT WAS UP TO SPECS, THEN TO ANOTHER CHEVY DEALER, WHO INFORMED ME OF TSB #564401A, WHICH IS MY EXACT PROBLEM, AND PROVIDED ME W/ A COPY OF THE TSB. ALTHOUGH IT SAYS THAT THE PERFORMANCE OF THE TRUCK IS NOT HINDERED, IT'S WRONG. THE CLUNK IS BECOMING MORE FREQUENT AND LOUDER. THE TRUCK WON'T GO UP HILLS WITHOUT HESITATING AND LUNGING FORWARD. THE TSB SAYS THAT DEALERS ARE DISCOURAGED FROM TRYING TO FIX THE "DRIVELINE CLUNK" WHICH IS RIDICULOUS. I'VE WRITTEN GM TWO TIMES, AND COPIED THE DEALER FROM WHICH I BOUGHT THE TRUCK, AND NO ONE HAS CONTACTED ME. I'M CONCERNED, BECAUSE THE WEBSITE "ALLDATA" INDICATES THAT TSB #564401A (DRIVELINE CLUNK) WAS THE SUBJECT OF A RECALL. IS THIS TRUE? THE TSB SAYS THAT THE CLUNKING SOUND IS THE RESULT OF "BUILT-UP FREEPLAY". WHAT'S THAT MEAN? WHAT DOES BUILT-UP FREEPLAY RESULT IN AFTER YEARS OF OPERATION? THE TRUCK GOES DOWN THE ROAD MAKING A CLUNKING SOUND, THROUGH NO FAULT OF MY OWN, YET GM REFUSES TO EVEN ATTEMPT TO FIX IT.