ODI'S INVESTIGATIONCONCLUDED THAT THE LEGS THAT RETAIN THE TURN SIGNAL CANCELING RING (TSCR), PART NUMBER 1607363, TO THE STEERING WHEEL INSTALLED IN MODEL YEAR 1998 - 1999 VN AND VHD SERIES VTNA (VOLVO TRUCK NORTH AMERICA) VEHICLES ARE PRONE TO CRACKING AND BREAKING.WHEN THE RETENTION LEGS BREAK, THE SEPARATED PIECES OF THE TSCR TYPICALLYREPOSE IN THE HOST CAVITY IN THE STEERING WHEEL HUB WHERE THEY WERE DEPOSITED.ODIFOUND THAT BROKEN PIECES OF THE TSCR EITHER (1) MIGRATED FROM THEIR HOST CAVITY AND DROPPED COMPLETELY FROM THE STEERING WHEEL ASSEMBLY OR (2) LODGED IN VARIOUS AREAS OF THE STEERING WHEEL PROXIMATE TO THE TSCR.ODI SIMULATED VARIOUS LOCATIONS AND POSITIONS THAT A SEPARATED PIECE OF THE TSCR MIGHT BECOME LODGED WITHIN THE STEERING WHEEL ASSEMBLY, BUT NONE OF THESE SIMULATIONS GENERATED ANY APPRECIABLE INCREASE IN STEERING EFFORT.