[wreder]

Any locksmith/key shop should have one for you.

Here is some info on keys I obtained long ago.  I also have a 2018 VV.  I never tried it, so not sure if it works.  I posted this in another part of this forum a while back.                  

Daniel Boyer (company man): Any locksmith that has laser cutting capacity can duplicate the key if they have GM chipped blanks. After the key is cut, start your vehicle with one of your programmed keys, turn it off, then immediately start it with your new cut key and it will program it. Wait 25 secs and test it.

Thanks for the reply.  I bought the 2018 Venice  but did know there was supposed to get a chipped key.  I only have a blank.  I'll try a locksmith and see what happens.