Chevrolet Silverado transmission problems

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.

SINCE DATE OF PURCHASE, TRANSMISSION HAS BEEN VIBRATING AND CAUSING ENGINE TO FEEL LIKE IT IS UNDER STRESS/HEAVY LOAD. CONTACTED DEALER AND ANOTHER CHEV. SERV. BOTH ADVISE CHEV. KNOWS OF PROBLEM BUT DOES NOT KNOW WHAT IT IS OR HOW TO CORRECT IT. CONTACTED CHEV. CUST.SERV. TOTAL WASTE OF TIME. THEY DO NOT CARE. SIMPLY STATE IF CHEV. TAC SAYS THEY ARE WORKING ON PROBLEM WHAT DO I CARE. THEY WILL FIX IT EVENTUALLY. PROBLEM IS IF THEY DONT KNOW WHAT THE PROBLEM IS HOW CAN CHEV. CLAIM IT IS NOT A SAFETY ISSUE. SECOND PROBLEM- ABS BRAKES ARE ACTIVATING ON DRY HARD SURFACE AT SPEEDS UNDER 40 MPH. DEALER SYAYS PROBLEM DOES NOT EXIST. STATED THEY CALLED CHEV. TAC KNOW NOTHING ABOUT BREAK PROBLEMS SO THERE MUST NOT BE ONE. TRIED TO SAY THAT I DONT KNOW HOW ABS WORKS. HAVE HAD ABS FOR 15 YEARS KNOW IT PRETTY WELL. IT IS DEFINITELY ACTIVATING WHEN IS SHOULD NOT. IT SEEMS THAT CHEV. IS NOT CONCERNED BECASUE TRUCK WAS BOUGHT AND PAID FOR.

TRANSMISSION LOCKED UP IN SECOND GEAR AND WOULD NOT SHIFT OUT OF GEAR UP OR DOWN. ALSO, ABS BRAKE SYSTEM HAS A DEFECT IN THE SYSTEM, CAUSING EXTENDED STOPPING DISTANCE WHEN PEDAL IS PUSHED. IN ADDITION, A/C UNIT REPLACED THREE TIMES/ ELECTRIC SEAT WIRING IS DEFECTIVE/ DOOR HANDLES KEEP BENDING WHEN ATTEMPTING TO OPEN DOORS, AND REAR SEAL LEAKAGE. REPAIR WORK AND REPLACEMENTS DONE AT OWNER'S EXPENSE. PROBLEMS STILL OCCUR. PROVIDE FURTHER INFORMATION. *AK