Dealer says it has a leak. Where do I look for the hose at, and how do I replace it?

The return hose will be the one going into the bottom of the resevior. You will have to find where its leaking as most of them are metal and rubber hose. You can replace the rubber parts as this is low pressure.

I went to look and didnt see any fluid coming from where I thought the PS hoses were. I did find that the radiator was leaking from the hose at the top front of the truck. There was corrosion where it was connected to the engine. I cleaned it and put the hose back on.

found some gunk on some part that is attched to the belt system on the passenger side of the truck. If I look in the wheel well it is right at the top of that inside the mud flap. looks like the PS hose goes from the other side of the truck to just above this part.