octane GMC SIERRA 2008 Get To Know Guide

apply the trailer brakes. ITBC system
information is displayed on the Driver
Information Center.
See Section 4 of your Owner Manual
Getting to Know Your Sierra22
vehicle has been sitting for at least three
hours or driven no more than one mile.
You can temporarily clear the DIC
message by acknowledging it with
your DIC controls. However, at the nextvehicle startup, the DIC message willreappear if the tire pressure has notbeen corrected.
During cooler conditions, the low tire
pressure warning light may appear whenthe vehicle is first started and then turn
off as you start to drive the vehicle. Thiscould be an early indicator that your tirepressures are getting low and need tobe inflated to the proper pressure.
See Section 5 of your Owner Manual.
Note:The Tire Pressure Monitor can
alert you about low tire pressure, but itdoesn’t replace normal monthly tiremaintenance.
Integrated Trailer Brake Control
System (if equipped)
The control
panel for theIntegratedTrailer Brake
Control (ITBC)system islocated on theinstrumentpanel to theleft of the steering wheel.
The control panel allows you to adjust
the amount of output available to theelectric trailer brakes and to manuallyIf the Tighten Gas Cap message is
displayed on the Driver InformationCenter (DIC), check that your fuel cap
is properly installed. If the cap is notsecurely fastened, turn it clockwise untila clicking sound is heard, indicating that
it is properly installed. The DIC messagewill turn off after a few driving trips with
the cap properly installed.
See Sections 3 and 5 of your Owner Manual.
Tighten Gas Cap Message
Note:If the brakes are manually
applied, the brake lights do not turn on.
If your vehicle has a yellow gas cap, it
was engineered as a FlexFuel vehiclecapable of running on gasoline or E85fuel. E85 is a blend of 85% ethanol and15% gasoline. E85 is a highoctane,renewable fuel made primarily from corn
(see livegreengoyellow.com).
Your FlexFuel vehicle automatically
detects the current fuel mixture in thefuel tank and adjusts engine settings
accordingly. You can fill up with gasolineor E85, regardless of which fuel isalready in the tank.
FlexFuel (E85) – Yellow Gas Cap
(if equipped)
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