roadsideron wrote:
I was watching an episode of Chicago PD where Voigt said to one of the other cops, "You go with" meaning you go along. It's funny 'cause that's how Chicago folks talk. I was born and raised Chicago for the first 38 years of my life.
Technically, that isn't ungrammatical--it's just an incomplete sentence. It is missing the object of the preposition "with" (which would probably be "him", "her", or someone's name). That form of the sentence is also Imperative--meaning "Do it!