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^^^ Which means that no 2014 C7's have tow hook receivers.
My understanding is that any 2014 Z51 produced after December of 2013, have the tow hook receivers.
I have a 2016, so a 2014 Z51 owner needs to chime in to verify, but my understanding.
Reason I know this stuff is that it came up in a club meeting, and arrangements were made to provide tow hooks to club members, through GM. Paid, not free. We simply provided the direction to acquire one. We had people ordering them with cars having no receiver, so we did a lot of research to avoid problems.