One problem related to transfer case has been reported for the 2006 Ford F-350. The most recently reported issues are listed below.
The contact owns a 2006 Ford F-350. The contact stated that while driving approximately 70 mph, the vehicle independently swayed side to side without warning. The vehicle was towed to an independent mechanic, where it was diagnosed that the drive shaft, case shifter, transmission, lift pump, transfer case, left caliber, fuel line and rear shaft needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 131,000.