Thanks for asking here.
This is why.gpdaileda wrote:Where can I register my new bass with G&L?
There is no formal registration with G&L as a manufacturer. Just be sure to keep your receipt (date of purchase) in a safe place in the event that warranty work is required.
Having said that, there is
The G&L Registry, an owner-maintained database of instruments. Probably doesn't accept Tributes due to their serial number format, but you can certainly try.
Ken...