Logan,
Looking at your model you are using an iterate feature, this produces a single feature or row from you input FeatureClass and this is feeding into a Dissolve tool. Dissolving a single row does not make sense as typically you dissolve many geometries into each other based upon a field. I think the model logic is flawed?
It would make sense if you were iterating through a folder of featureclasses, if this is the case then you want to be using the Iterate FeatureClass.
Duncan