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Getting to Know Your Sierra
22
Note: The Tire Pressure Monitor can
alert you about low tire pressure, but it
doesn't replace normal monthly tire
maintenance.
The spare tire does not have a sensor
and cannot transmit tire pressure
readings, which may cause the low tire
pressure warning light to illuminate
while the spare tire is installed.
See Section 5 of your Owner Manual.
Integrated Trailer Brake Control
System (if equipped)
The control
panel for the
Integrated
Trailer Brake
Control (ITBC)
system is
located on the
instrument
panel to the
left of the steering wheel.
The control panel allows you to adjust
the amount of output available to the
electric trailer brakes and to manually
apply the trailer brakes. ITBC system
information is displayed on the Driver
Information Center.
Note: If the brakes are manually
applied, the brake lights do not go on.
See Section 4 of your Owner Manual
Tighten Gas Cap Message
If the Tighten Gas Cap message is
displayed on the Driver Information
Center (DIC), check that your fuel cap
is properly installed. If the cap is not
securely fastened, turn it clockwise until
a clicking sound is heard, indicating that
it is properly installed. The DIC message
will turn off after a few driving trips with
the cap properly installed.
See Sections 3 and 5 of your Owner Manual.
FlexFuel (E85) – Yellow Gas
Cap (if equipped)
If your vehicle has a yellow gas cap, it
was engineered as a FlexFuel vehicle
capable of running on gasoline or E85
fuel. E85 is a blend of 85% ethanol and
15% gasoline. E85 is a high-octane,
renewable fuel made primarily from corn
(see livegreengoyellow.com).
Your FlexFuel vehicle automatically
detects the current fuel mixture in the
fuel tank and adjusts engine settings
accordingly. You can fill up with gasoline
or E85, regardless of which fuel is
already in the tank.
E85 is not yet available at all gas sta-
tions. E85 holds less energy per gallon
than gasoline, so drivers will experience
lower miles per gallon and cruising
range when running on E85.
Note: If your vehicle does not have the
yellow gas cap, do not use E85.
See Section 5 of your Owner Manual.
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