Hi again, 5.2 L 318 engine dodge ram b2500 van. on 2001 Dodge Ram 2500

There is a sensor or solinoid on the extension housing of the trans. It is high up in a corner .I wish I knew what it is because it leaks fluid but I don't want to trouble it before I know what it does and if it just needs a new rubber ring.Any one knows ? Thanks for any help.

Asked by for the 2001 Dodge Ram 2500
If it's up at your bell housing,it is probably the crank or camshaft speed sensor