GMC 2010 Sierra 1500 Crew Cab Owner's Manual page 274

Your vehicle has a Driver Information Center (DIC).
The DIC displays information about your vehicle. It also
displays warning messages if a system problem is
detected.
All messages will appear in the DIC display located
below the tachometer in the instrument panel cluster.
The DIC comes on when the ignition is on. After a short
delay, the DIC will display the information that was last
displayed before the engine was turned off.
If your vehicle has DIC buttons, see DIC Operation and
Displays (With DIC Buttons) later in this section and
for the displays available.
If your vehicle does not have DIC buttons, see DIC
Operation and Displays (Without DIC Buttons) later in
this section for the displays available.
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If your vehicle has DIC buttons, the information below
explains the operation of this system.
The DIC has different displays which can be accessed
by pressing the DIC buttons located on the instrument
panel, next to the steering wheel.
The DIC displays trip, fuel, and vehicle system
information, and warning messages if a system problem
is detected.
The DIC also allows some features to be customized.
See
for more information.
If the vehicle has DIC buttons, you can also use the trip
odometer reset stem to view some of the DIC displays.
See Trip Odometer Reset Stem Menu Items later in
this section.