Truck shift lever moving but not engaging

[nitrox2595]

Please help!! I just rushed to an emergency fire call and when i pulled into the lot, the truck would not go into park. then i noticed that the shifter would sloppily move the full range of gears and the dash showed it was in 6th. i was having problems for the past few days when going from park to reverse, i would have to jiggle it. Anyone know whats up? the truck will not start, and it almost feels like the linkage popped off, but i opened the dash and can only see a plastic "arm" going into something when i move the lever. The truck is a 2007 megacab dually with an auto trans/ i am not getting a code either. . Please help, im stuck and dont know what to do. Thanks guys!

 

[nitrox2595]

Found the problem. . The cable bracket came off the transmission... Thanks for the astounding wealth of helpful info... . Happy Easter!