GMC Chevrolet Tahoe 2012 Manual page 20

Chevrolet Tahoe and GMC Yukon/Yukon Denali Hybrid - 2012
5-8 Instruments and Controls
Charging System Light
This 12 volt battery light comes on
briefly when the ignition is turned to
ON/RUN, but the engine is not
running, as a check to show it is
working.
It should go out once the engine
has been started. If it stays on,
or comes on while driving, there
could be a problem with the 12 volt
charging system. Have the vehicle
serviced by your dealer. A 12 volt
charging system Driver Information
Center (DIC) message may also
appear. See Driver Information
Center (DIC) on page 5 11 for more
information. This light could indicate
that there are electrical problems.
Have it checked right away. If a
short distance must be driven with
the light on, be certain to turn off all
the accessories.
Brake System Warning
Light
With the ignition in ON/RUN, the
brake system warning light comes
on when the parking brake is set.
If the vehicle is driven with the
parking brake engaged, a chime
sounds when the vehicle speed is
greater than 8 km/h (5 mph).
The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining
circuit can still work to stop the
vehicle. For normal braking
performance, both circuits need to
be working.
Black plate (8,1)
If the warning light comes on and a
chime sounds there could be a
brake problem. Have the brake
system inspected right away.
This light also comes on due to low
brake fluid. See the owner manual
for more information.
Metric English
This light should come on briefly
when the ignition key is turned to
ON/RUN. If it does not come on
then, have it fixed so it will be ready
to warn if there is a problem.