Gmc 2007 Sierra User Manual Page 279

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SERVICE CHARGING SYSTEM
On some vehicles, if there is a problem with the
battery charging system, this message will appear
on the DIC. Under certain conditions, the battery
warning light may also turn on in the instrument
panel cluster. See Battery Warning Light on
page 253. The battery will not be charging at an
optimal rate and the vehicle will lose the ability
to enter the fuel economy mode. The vehicle
is safe to drive, however you should have
the electrical system checked by your dealer.
Pressing any of the four DIC buttons will
acknowledge the message and clear it from the
DIC display. If your vehicle does not have the four
DIC buttons, pressing the trip odometer reset
stem will acknowledge the message and clear it
from the DIC display.
TIGHTEN FUEL CAP
If the vehicle’s fuel cap is not tightened properly,
this message may appear along with the check
engine light on the instrument panel. See
Malfunction Indicator Lamp on page 258. Fully
reinstall the fuel cap. See Filling the Tank
on page 474. The diagnostic system can determine
if the fuel cap has been left off or improperly
installed. A loose or missing fuel cap will allow fuel
to evaporate into the atmosphere. A few driving
trips with the cap properly installed should turn the
light and message off.
TRACTION ACTIVE
When the traction control system had detected
that any of the vehicle’s wheels are slipping,
the traction control system will activate and this
message will appear on the DIC. For more
information, see Traction Assist System (TAS) on
page 363.
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