Devin, look in the steer bay and see if there is a shut off valve for the step slide. My 91 Liberty had several needle valves in the steer bay for the step slide, pocket door, sewer dump, ect. My 2000 Liberty does not have the needle valves so your 94 may not either. Anyway, if you do have a valve for the step slide air supply, see if the leak goes away when you shut the valve. If it does, I'm gonna bet that the step slide cylinder is going to need replacing or rebuilt. On the 91 Liberty, it was a huge job replacing the cylinder because Liberty attached the cylinder to the back edge of the step slide. At some point, they started attaching the cylinder to the front edge of the slide, so like Tom says it can be accessed from underneath when the slide is out. If the cylinder is attached at the rear of the step slide and needs to be replaced, send me a PM and I'll go into detail on the fix.