Chevrolet Tahoe Owner's Manual page 26

Vehicles with a two
speed transfer case have a
N (Neutral) position. Shift the
transfer case to N (Neutral) only
when towing the vehicle. See
Recreational Vehicle Towing on
page 10-85 or Towing the Vehicle
on page 10-84.
See Four-Wheel Drive (Single
Speed Automatic Transfer Case) on
page 9-38 or Four-Wheel Drive (Two
Speed Automatic Transfer Case) on
page 9-34.
Press to turn the system on
and off. Turn to increase or
decrease the volume.
Press to choose between
®
FM, AM, or SiriusXM , if equipped.