NHTSA Complaint #10258637 — 2004 CHEVROLET AVALANCHE

I HAVE A PROBLEM WITH THE SPEEDOMETER SHOWING INACCURATE SPEED ON MY 2004 CHEVY AVALANCHE. THE PROBLEM STARTED WHILE I WAS SLOWING FROM 55MPH TO 45 MPH DO TO A REDUCE SPEED AREA, THE VEHICLE SLOWED BUT THE SPEEDOMETER SAID AT 55MPH. IT STAYED AT 55MPH EVEN WHEN I CAME TO A COMPLETE STOP, SHUT OFF THE VEHICLE AND RESTARTED, WHEN I PUT THE VEHICLE IN GEAR AND STARTED MOVING AGAIN THE SPEEDOMETER BEGAN TO MOVE UP TO 60MPH WHEN I WAS TRAVELING APPROXIMATELY 10MPH. I SPED UP A LITTLE MORE AND THE SPEEDOMETER CLIMBED MORE. I SLOWED DOWN TO A STOP AND THIS TIME THE SPEEDOMETER STOPPED AT 60MPH WHILE I WAS AT A COMPLETE STOP. I TURNED AROUND TO GO BACK HOME AS I COULD NOT LEGALLY JUDGE MY SPEED AND AS I PROCEED TO TRAVEL AT MY BEST ESTIMATE 50-55 MPH THE SPEEDOMETER CLIMBED UP PAST 120MPH. WHEN I PARKED THE VEHICLE AT HOME THE SPEEDOMETER SHOWED 65 MPH. I OPENED THE HOOD, DISCONNECTED THE BATTERY AND LET IT SIT UNCONNECTED FOR APPROXIMATELY HOUR AND THEN RECONNECTED THE BATTERY. THIS DID NOT HELP, THE SPEEDOMETER STILL SHOWED 65MPH. I CONTACTED MY LOCAL CHEVY DEALER AND ASKED THEM ABOUT THE PROBLEM I WAS HAVING, THEY TOLD ME THAT SINCE I HAVE OVER 40,000 MILES ON MY VEHICLE THAT I WOULD HAVE TO PAY 400 DOLLARS FOR A NEW CLUSTER. THIS IS A SAFETY ISSUE AND IT SHOULD BE COVERED UNDER WARRANTY. I CAN NOT DRIVE MY VEHICLE FOR FEAR OF INADVERTENTLY SPEEDING AND THUS GETTING ONE OF THOSE NICE DRIVER AWARDS FOR SPEEDING. PLEASE HELP RESOLVE THIS MATTER. *TR