2008 GMC SIERRA brake

Congratulations on your purchase of a GMC Sierra. Please read this information about your vehicle’s features and
your Owner Manual to ensure an outstanding ownership experience. Note that your vehicle may not include all thefeatures described in this booklet. Keep this booklet with your Owner Manual for easy reference.
DRIVER INFORMATION
Instrument Panels . . . . . . . . . . . . .2
Instrument Panel Cluster . . . . . . .4Vehicle Symbols . . . . . . . . . . . . . . .5
Voltmeter Operation . . . . . . . . . . . .5
Driver Information Center . . . . . .5
SAFETY& SECURITY
Remote Keyless Entry . . . . . . . . . .7
Content TheftDeterrent System . .7OnStar
® . . . . . . . . . . . . . . . . . . . . . .8
COMFORT
Power Seat Controls . . . . . . . . . . .8
Heated Seats . . . . . . . . . . . . . . . . . .8
Memory Settings . . . . . . . . . . . . . .9
Adjustable Pedals . . . . . . . . . . . . .9
Automatic Climate Controls . . . . .9
ENTERTAINMENT
Audio System Features . . . . . . . .10MultipleDisc CD Player . . . . . . . .13
Touch Screen Navigation
Entertainment System . . . . . . . . .13XM
®Satellite Radio . . . . . . . . . . .13
Rear Seat Audio and DVD Rear
Seat Entertainment Systems . . .14
Audio Steering Wheel Controls .14
CONVENIENCE
Remote Vehicle Start . . . . . . . . . .15Cruise Control . . . . . . . . . . . . . . .16
Rainsense™ II Windshield
Wipers . . . . . . . . . . . . . . . . . . . . . .16
Heated Windshield Washer
Fluid . . . . . . . . . . . . . . . . . . . . . . . .17
Automatic Headlamp System
and Interior Lamps . . . . . . . . . . . .17
Sunroof . . . . . . . . . . . . . . . . . . . . .17
Power Sliding Rear Window . . . .18Ultrasonic Rear Parking Assist .18
Universal Home Remote . . . . . . .19Automatic Dimming Rearview
Mirror with OnStar
®, Compass
and Temperature Display . . . . . .19
Power Foldaway Mirrors . . . . . . .19TrailerTow Mirrors . . . . . . . . . . . .20
Folding the Rear Seat . . . . . . . . .20
Cargo Management System . . . .20
PERFORMANCE & MAINTENANCE
6Speed Automatic
Transmission Controls . . . . . . . .21
StabiliTrak
®– Stability Control
System . . . . . . . . . . . . . . . . . . . . .21
Tire Pressure Monitor . . . . . . . . .21
Integrated Trailer Brake Control
System . . . . . . . . . . . . . . . . . . . . .22
Tighten Gas Cap Message . . . . .22
FlexFuel (E85) – Yellow Gas Cap 22Resetting the Engine Oil Life
System . . . . . . . . . . . . . . . . . . . . .23
OWNER INFORMATION
Sierra Accessories . . . . . . . . . . . .23
Roadside Assistance . . . . . . . . . .24
My GMLink . . . . . . . . . . . . . . . . . .24
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Following are examples of symbols you
may find on your vehicle. It is importantto become familiar with them, as theyalert you to various vehicle operatingconditions.
Air Bag Readiness LightAir Conditioning (A/C)
Antilock Brake System Warning
Light
Brake System Warning Light
(Parking Brake Set)
Cruise Control Set LightFourWheel Drive Light
(Manual Transmission only)
HeadlampsHeated MirrorsMalfunction Indicator Lamp
(Check Engine Light)
Off
On/Off
On
Rear Window DefoggerSafety Belt Reminder LightSecurity Light
StabiliTrak Warning Light
Tire Pressure Warning Light
Tow/Haul Mode Light
Ultrasonic Rear Parking Assist
Voltmeter Operation
The voltmeter shows the condition of the
vehicle’s charging system. The systemis designed to regulate voltage output tohelp improve fuel economy and extendbattery life. Normal system operationreadings may fluctuate (as indicated bythe blue area in the illustration above)based on vehicle operation, includingthe number of electrical accessoriesbeing operated and engine speed.
See Section 3 of your Owner Manual.
Vehicle Symbols
Driver Information Center
Your vehicle’s Driver Information Center
(DIC) provides vehicle information, vehi
cle feature customization (if equipped),
and vehicle warning messages. The DICmessages will be shown on the instru
ment panel cluster display.
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9
Memory Settings (if equipped)
The memory buttons are located on the
driver’s door next to the heated seatcontrols. Settings can be programmed
for the driver’s seat, the outside mirrorsand the adjustable pedals (if equipped)for two drivers.
To save memory settings:
1. Adjust the driver’s seat, outside
mirrors and pedals to a comfortable
position.
2. Press and hold button 1 or 2 until two
beeps sound.
3. Repeat these steps for a second
driver using the other memory button.
To recall the settings, press memory
button 1 or 2 with the vehicle in Park. Ifthe Remote Keyless Entry transmitter is
used to enter the vehicle and the memory seat recall feature is on (see DriverInformation Center), the settings will be
recalled automatically.
Easy Exit Seat
The easy exit seat button is located
between the two memory buttons. Pressthe exit button, with the vehicle in Park,
to move the driver’s seat to the exitposition.
If the easy exit seat feature is on (see
Driver Information Center), automaticseat movement will occur when the keyis removed from the ignition.
See Section 1 of your Owner Manual.
The accelerator and brake pedals can
be adjusted to a comfortable and safeoperating position by using theadjustable pedals switch located on the
Adjustable Pedals (if equipped)
The automatic climate control system
maintains the desired individual temper
ature for the driver and front seat pas
senger. The system adjusts the airflow
mode, fan speed, air conditioning and
recirculation functions to reach the settemperature(s) as quickly as possible.
Automatic Operation
To set the automatic mode:
1. Press the AUTO button.
2. Set the driver’s and front passenger’s
temperature using the + or – temperature buttons.
Automatic Climate Controls
(if equipped)
instrument
panel belowthe climatecontrols.
Press the top
arrow on theswitch to movethe pedalsaway from youand the bottom arrow on the switch tomove the pedals toward you.
The pedals cannot be adjusted when the
vehicle is in Reverse or when cruisecontrol is activated.
See Section 2 of your Owner Manual.
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11
FAV (Favorite)
(if equipped): Press this
button to go through up to six pages of
any combination (AM; FM; or XM, if
equipped) of preset favorite radio sta
tions. On each page, up to six stations
are available by using the six push
buttons below the radio display.

EQ (Equalization)
(if equipped): Press
this button to select preset equalization
settings.

CAT (Category)
(if equipped): Press this
button to find XM stations (if equipped)
within a desired category.

Auxiliary Input Jack
(if equipped):
A portable audio player, such as an MP3
player or a cassette player, can be con
nected to the auxiliary input jack located
on the radio. Press the CD/AUX button
to begin playing audio from the player
over the vehicle speakers. To optimize
speaker volume, fully increase the
volume on the portable audio player.

Setting Preset/Favorite Stations

Before setting your preset or favorite
stations, shift the vehicle into Park
(automatic transmission) or into Neutral
and set the parking brake (manual
transmission).

Note:
Choosing to engage in extended
searching for specific audio stations or
songs by using buttons and knobs —
or giving extended attention to enter
tainment tasks — can lead you to look
away from the road frequently or longer
than usual. Looking away from the road
for prolonged periods may cause you to
miss seeing things on the road that you
need to see. Be sure to keep your eyes
on the road and mind on the drive —
and avoid engaging in extended search
ing for specific items while driving.

Setting Preset Stations (Base Radio)

To set up to 18 preset stations:
1. Turn on the radio.
2. Press BAND to select FM1, FM2
or AM.
3. Tune in the desired radio station.
4. Press and hold one of the six push buttons until a beep sounds.
5. Repeat steps 2–4 for each pushbutton.

Setting Favorite Stations (Uplevel
Radio, if equipped)

You can set up to six pages of any com
bination (AM; FM; or XM, if equipped) of
favorite radio stations, with up to six sta
tions stored on each page.
To set the number of favorite station
pages:
1. Press the MENU button to display theradio setup menu.
2. Press the pushbutton located below the FAV 1–6 label on the radio
display.
3. Select the desired number of favorite station pages.
4. Press the FAV button. You may now begin storing your favorite stations for
the chosen number of pages.

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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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