C7 build number
 

Got me c7 about a month ago. Is there anyway I can determine what build number it was off of the vin?

If you have the window sticker, it's on that. I believe the left lower corner.

If I understand your question, the last 4 digits of your VIN will be something like 3215. That would mean you car was the 3215 to receive the sequential VIN and it would be approximately the 3215 built. Approximately, because it could have been built before or after VIN 3214 and lower numbers or VIN 3216 and higher numbers if yours or others were held up do to a constraint.