[elegant]

GM TechLink has acknolwedged that up to 464, 2017 Z06's might have a supercharger which "groans" or "moans." Check your VIN and if you are the unlucky one, your dealer has more info on it -- traceable to a bad batch of pulleys.

Supercharger Idler Pulley Sounds

A scraping or moaning sound may be heard from the supercharger idler pulley on some 2017 CTS-V, Corvette; and 2017-2018 Camaro models equipped with the supercharged 6.2L V8 engine (RPO LT4). The sound will be most noticeable when the engine is idling.

This condition has the following VIN breakpoints.

Source: GM TechLink, Supercharger Idler Pulley Sounds