Navigation sound volume

[CartMaker]

2017 Silverado navigation system, seems odd that adjusting the driving instruction sound volume, the lowest number is 22, nothing lower. Is this standard or something to be corrected?

[sk]

Unfortunately it's standard.  My 2015 is the same way.  I have actually worked directly with the GM Infotainment Team for the last 3 years to try to get them to reduce the volume threshold but they won't.  I hate it when everybody in my truck is sleeping during a road trip and they get woken up by the Nav lady screaming directions at me!!

[CartMaker]

Thanks. Pretty dumb to have the lowest level at #22. There needs to be a lower level. Guess they know better, yea.