2009 RAM 1500 Suspension Problems

I bought this 2009 Dodge ram Laramie about a year ago been riding like new but 4 days ago starting to hear a bad whining noise from the rear end and I see this truck had a recall on the pinion nut I think it's coming lose from the pinion

Took the truck in for tire rotation and was told they couldn't do it due to the rear frame being severely rusted out I have noticed this is a very common problem with this year truck in the same area mine is rusted out

TL* THE CONTACT OWNS A 2009 RAM 1500. WHILE REVERSING OUT OF A PARKING LOT AND TURNING TO THE RIGHT, THE FRONT DRIVER'S SIDE HUB DETACHED FROM THE WHEEL WITHOUT WARNING. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE WHEEL HUB ASSEMBLY SEPARATED FROM THE WHEEL AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. GERRY WOOD CHRYSLER DODGE JEEP RAM (525 JAKE ALEXANDER BLVD S, SALISBURY, NC 28147, (704) 508-4660) WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THE VIN WAS NOT INCLUDED IN A RECALL. THE CONTACT REFERENCED NHTSA CAMPAIGN NUMBER: 07V038000 (SUSPENSION). THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 106,000.