NHTSA Complaint #10560546 — 2009 GMC ACADIA

WHILE DRIVING THRU AN INTERSECTION WITH A YIELD MY VEHICLE SUDDENLY STOPPED AND THE ENGINE RPM CLIMBED TO AROUND 3500 RPM. THE TRANSMISSION SLIPPED BETWEEN GEARS CAUSING A SUDDEN AND UNEXPECTED SLOW DOWN.LUCKILY ANOTHER DRIVER WAS ALERT AND HAD TO SLOW DOWN QUICKLY TO KEEP FROM HITTING US AS WE WERE MERGING WITH TRAFFIC.THIS NEVER HAPPENED BEFORE AND CAME ON WITHOUT WARNING.AS SOON AS IT HAPPENED ONCE IT HAS BEEN HAPPENING MORE OFTEN, I BROUGHT THE VEHICLE IN AND THE DIAGNOSIS WAS THE "WAVE PLATES" IN THE TRANSMISSION. THE MECHANIC INFORMED ME THAT THIS TRANSMISSION HAD AN ISSUE WITH A PART THAT WAS NOT PROPERLY HEAT TREATED AND CAUSED IT TO FAIL.I CALLED THE GM DEALER AND THEY WOULD NOT WARRANTY BECAUSE WE WERE JUST OUTSIDE THE 100,000 MILE WARRANTY PERIOD. THEY ALSO STATED THAT THEY KNEW THERE HAVE BEEN MANY ISSUES WITH THIS VEHICLE BUT GM HAS NOT ISSUED ANY TYPE OF RECALL.NOW I NEED A NEW TRANSMISSION AT A COST OF AROUND 4,000 DOLLARS. I HAVE OWNED SEVERAL GM VEHICLES IN THE PAST AND GOTTEN WELL OVER 250,000 MILES WITH NO ISSUES AT ALL. THIS COULD HAVE BEEN VERY SERIOUS AND CAUSED INJURIES IF THE CIRCUMSTANCES WERE DIFFERENT AND SOMEONE WHO PANICKED WAS INVOLVED. I FEEL THAT THIS SHOULD WARRANT A RECALL AND FORCE GM INTO LOOKING INTO THIS FURTHER. THANK YOU FOR YOUR TIME. *TR