TL* THE CONTACT OWNS A 2011 VOLVO VNL. THE CONTACT STATED THAT THE TRUCK CABIN JERKED OUT OF CONTROL WHEN A BUMP WAS HIT OR WHEN DRIVING ON ROUGH TERRAIN. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO REPLACED THE REAR SHOCKS; HOWEVER, THE FAILURE RECURRED. THE MECHANIC REPLACED ALL THE SHOCKS, BUT THE FAILURE WAS STILL NOT REMEDIED. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 621,232.