DT*: THE CONTACT STATED THAT WHILE LOOKING INTO THE VEHICLE ENGINE ON TWO DIFFERENT OCCASIONS, THE HOOD CAME DOWN AND STRUCK THE CONTACT ON THE BACK OF THE NECK. THERE WERE NO WARNING SOUNDS PRIOR TO THE HOOD FALLING. THE VEHICLE WAS TAKEN TO A SERVICE DEALER, WHO EXPRESSED THAT THERE HAVE BEEN ISSUES WITH THE HOOD PROP RODS ON SEVERAL DIFFERENT MODEL YEARS OF THE CHEROKEES. THE DEALER WAS ABLE TO REPLACE THE HOOD PROP RODS.