Auto Transmission Shifter Loose

I have an automatic transmission and my gear shifter seems to be loose. I can easily switch from any gear such as park, to reverse or any other gear without pushing down the button on top. This hasn't really been a problem except when i do some trail rides and it gets bumpy. The shifter often bumps out of drive and into other gears. Any solutions?

 

bump

 

Have you tried taking it apart

 

ive been in a truck like that, the guy said it had been like that for years.

 

No i havent taken it apart, basically for my lack of knowledge. I mean i expect it to have a little give but to actually come out of gear when it gets bumpy is pretty annoying

 

I know on the 2 gen truck you take out the center console you can see were the shifter mounts maybe something is losse or something but I bet if you keep searching you'll find a solution sorry I'm no help