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Creo knows the bounding box at all times. It just needs to expose these values in the system parameters or a dedicated feature without having to install and run ModelCheck. (I suspect very few small to medium-size companies have ever attempted to configure and use ModelCheck.)
Here is the corresponding product idea. It's currently the 11th most requested Creo enhancement on this community (out of more than 4,700 Creo ideas).
https://community.ptc.com/t5/Creo-Parametric-Ideas/Bounding-Box-as-a-Feature/idi-p/574282
Creo will do it, no modelcheck needed.
Refer to this thread for an overview.