The 2020 Corvette owners manual is now available for download:
Looking at the fuse diagram on page 244:
Fuse 7: Power sounder module/Pedestrian friendly alert function
Fuse 12: Lithium ion battery module
The pedestrian alert function is used by EVs to produce a low level sound so pedestrians know the vehicle is near by. It is either a hybrid with an EV mode, or full EV.