CHEVROLET SILVERADO 2008 2.G Owners Manual

In addition, your vehicle may have a passenger
sensing system for the right front passenger’s
position, which includes sensors that are part of the
passenger’s seat. The passenger sensing system
may not operate properly if the original seat trim is
replaced with non-GM covers, upholstery or trim, or
with GM covers, upholstery or trim designed for a
different vehicle. Any object, such as an aftermarket
seat heater or a comfort enhancing pad or device,
installed under or on top of the seat fabric, could also
interfere with the operation of the passenger sensing
system. This could either prevent proper deployment
of the passenger airbag(s) or prevent the passenger
sensing system from properly turning off the
passenger airbag(s). SeePassenger Sensing
System on page 1-81.
If you have any questions about this, you should
contact Customer Assistance before you modify
your vehicle. The phone numbers and addresses
for Customer Assistance are in Step Two of
the Customer Satisfaction Procedure in this manual.
SeeCustomer Satisfaction Procedure on page 7-2.
If your vehicle has rollover roof-rail airbags, see
Different Size Tires and Wheels on page 5-88
for additional important information.Q:What if I added a snow plow? Will it keep the
airbags from working properly?
A:We have designed our airbag systems to work
properly under a wide range of conditions, including
snow plowing with vehicles that have the optional
Snow Plow Prep Package (RPO VYU). But do
not change or defeat the snow plow’s “tripping
mechanism.” If you do, it can damage your snow
plow and your vehicle, and it may cause an airbag
ination.
Q:Because I have a disability, I have to get my
vehicle modied. How can I nd out whether
this will affect my airbag system?
A:If you have questions, call Customer Assistance.
The phone numbers and addresses for Customer
Assistance are in Step Two of the Customer
Satisfaction Procedure in this manual. See
Customer Satisfaction Procedure on page 7-2.
In addition, your dealer/retailer and the service manual
have information about the location of the airbag
sensors, sensing and diagnostic module and airbag
wiring.
1-87

Restraint System Check
Checking the Restraint Systems
Safety Belts
Now and then, make sure the safety belt reminder light
and all your belts, buckles, latch plates, retractors
and anchorages are working properly.
Look for any other loose or damaged safety belt system
parts. If you see anything that might keep a safety belt
system from doing its job, have it repaired. Torn or frayed
safety belts may not protect you in a crash. They can rip
apart under impact forces. If a belt is torn or frayed, get a
new one right away.
Make sure the safety belt reminder light is working.
SeeSafety Belt Reminders on page 3-39for more
information.
Keep safety belts clean and dry. SeeCare of Safety
Belts on page 5-117.
Airbags
The airbag system does not need regularly scheduled
maintenance or replacement. Make sure the airbag
readiness light is working. SeeAirbag Readiness Light
on page 3-40for more information.
Notice:If an airbag covering is damaged, opened,
or broken, the airbag may not work properly.
Do not open or break the airbag coverings. If there
are any opened or broken airbag covers, have
the airbag covering and/or airbag module replaced.
For the location of the airbag modules, seeWhat
Makes an Airbag Inflate? on page 1-75. See your
dealer/retailer for service.
1-88

Replacing Restraint System Parts
After a Crash
{CAUTION:
A crash can damage the restraint systems
in your vehicle. A damaged restraint system
may not properly protect the person using it,
resulting in serious injury or even death in
a crash. To help make sure your restraint
systems are working properly after a crash,
have them inspected and any necessary
replacements made as soon as possible.If you have had a crash, do you need new belts or
LATCH system (if equipped) parts?
After a very minor crash, nothing may be necessary.
But the belt assemblies that were used during any
crash may have been stressed or damaged. See your
dealer/retailer to have your safety belt assemblies
inspected or replaced.
If your vehicle has the LATCH system and it was being
used during a crash, you may need new LATCH
system parts.
New parts and repairs may be necessary even if the
belt or LATCH system (if equipped), was not being used
at the time of the crash.
If an airbag inates, you will need to replace airbag
system parts. See the part on the airbag system earlier
in this section.
Have your safety belt pretensioners checked if your
vehicle has been in a crash, if your airbag readiness
light stays on after you start your vehicle, or while you
are driving. SeeAirbag Readiness Light on page 3-40.
1-89

✍NOTES
1-90

Keys...............................................................2-3
Remote Keyless Entry (RKE) System................2-4
Remote Keyless Entry (RKE) System
Operation...................................................2-5
Remote Vehicle Start......................................2-7
Doors and Locks............................................2-10
Door Locks..................................................2-10
Power Door Locks........................................2-10
Delayed Locking...........................................2-11
Programmable Automatic Door Locks..............2-11
Rear Door Security Locks..............................2-11
Lockout Protection........................................2-12
Rear Doors..................................................2-12
Tailgate.......................................................2-13
Windows........................................................2-15
Manual Windows..........................................2-15
Power Windows............................................2-16
Power Sliding Rear Window...........................2-17
Sun Visors...................................................2-18
Theft-Deterrent Systems..................................2-18
Content Theft-Deterrent.................................2-18
PASS-Key
®III+ Electronic Immobilizer.............2-20
PASS-Key®III+ Electronic Immobilizer
Operation.................................................2-20Starting and Operating Your Vehicle................2-22
New Vehicle Break-In....................................2-22
Ignition Positions..........................................2-22
Retained Accessory Power (RAP)...................2-24
Starting the Engine.......................................2-24
Fast Idle System..........................................2-25
Adjustable Throttle and Brake Pedal................2-26
Engine Coolant Heater..................................2-27
Active Fuel Management™.............................2-28
Automatic Transmission Operation...................2-28
Tow/Haul Mode............................................2-34
Four-Wheel Drive..........................................2-36
Parking Brake..............................................2-50
Shifting Into Park..........................................2-51
Shifting Out of Park......................................2-53
Parking Over Things That Burn.......................2-53
Engine Exhaust............................................2-54
Running the Vehicle While Parked..................2-54
Mirrors...........................................................2-56
Manual Rearview Mirror.................................2-56
Automatic Dimming Rearview Mirror
with OnStar
®, Compass and Temperature
Display....................................................2-56
Automatic Dimming Rearview Mirror with
Compass and Temperature Display..............2-58
Section 2 Features and Controls
2-1

Outside Manual Mirrors..................................2-59
Outside Towing Mirrors..................................2-60
Outside Power Mirrors...................................2-61
Outside Power Foldaway Mirrors.....................2-62
Object Detection Systems...............................2-64
Ultrasonic Rear Parking Assist (URPA)............2-64
OnStar
®System.............................................2-67
Universal Home Remote System......................2-71
Universal Home Remote System Operation
(With Three Round LED)............................2-71Storage Areas................................................2-78
Glove Box...................................................2-78
Cupholders..................................................2-78
Instrument Panel Storage...............................2-78
Center Console Storage.................................2-79
Luggage Carrier...........................................2-79
Rear Seat Armrest........................................2-80
Cargo Management System...........................2-80
Sunroof.........................................................2-82
Section 2 Features and Controls
2-2

Keys
{CAUTION:
Leaving children in a vehicle with the ignition
key is dangerous for many reasons, children
or others could be badly injured or even killed.
They could operate the power windows or
other controls or even make the vehicle move.
The windows will function with the keys in the
ignition and they could be seriously injured
or killed if caught in the path of a closing
window. Do not leave the keys in a vehicle
with children.
The key can be used for the ignition and all door locks.
The key has a bar-coded key tag that the dealer/retailer
or qualied locksmith can use to make new keys.
Store this information in a safe place, not in your vehicle.
2-3

See your dealer/retailer if a replacement key or
additional key is needed.
Notice:If you ever lock your keys in your vehicle,
you may have to damage the vehicle to get in.
Be sure you have spare keys.
If you are locked out of your vehicle, call the Roadside
Assistance Center. SeeRoadside Assistance Program
on page 7-7.
Remote Keyless Entry (RKE)
System
If this vehicle has the Remote Keyless Entry (RKE)
system, it operates on a radio frequency subject
to Federal Communications Commission (FCC)
Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
If there is a decrease in the RKE operating range,
try this:Check the distance. The transmitter may be too
far from the vehicle. Stand closer during rainy
or snowy weather.
Check the location. Other vehicles or objects may
be blocking the signal. Take a few steps to the
left or right, hold the transmitter higher, and
try again.
Check the transmitter’s battery. See “Battery
Replacement” later in this section.
If the transmitter is still not working correctly, see
your dealer/retailer or a qualied technician for
service.
2-4

Remote Keyless Entry (RKE)
System Operation
The Remote Keyless Entry (RKE) transmitter functions
will work up to 195 feet (60 m) away, however, the
operating range may be less while the vehicle is running.
There are other conditions which can affect the
performance of the transmitter. SeeRemote Keyless
Entry (RKE) System on page 2-4.
/(Remote Vehicle Start):If your vehicle has this
feature, press
/to start the engine from outside
the vehicle using the RKE transmitter. SeeRemote
Vehicle Start on page 2-7for additional information.
Q(Lock):Press to lock all the doors.
If enabled through the Driver Information Center (DIC),
the turn signal lamps will ash once to indicate
locking has occurred. If enabled through the DIC,
the horn will chirp when
Qis pressed again within
three seconds of the previous press of the lock button.
SeeDIC Vehicle Customization (With DIC Buttons)
on page 3-76for additional information.
Pressing
Qwill arm the content theft-deterrent system.
SeeContent Theft-Deterrent on page 2-18.
With Remote Start
(Without Remote Start
Similar)
2-5

"(Unlock):Press to unlock the driver’s door. If"is
pressed again within three seconds, all remaining doors
will unlock.
If it is dark enough outside, your interior lamps will
come on and stay on for 20 seconds or until the ignition
is turned on. If enabled through the DIC, the turn signal
lamps will ash twice to indicate unlocking has occurred.
SeeDIC Vehicle Customization (With DIC Buttons)
on page 3-76. If enabled through the DIC, the exterior
lights will turn on briey if it is dark enough outside.
See “APPROACH LIGHTING” underDIC Vehicle
Customization (With DIC Buttons) on page 3-76.
Pressing
"on the RKE transmitter will disarm the content
theft-deterrent system. SeeContent Theft-Deterrent on
page 2-18.
L(Vehicle Locator/Panic Alarm):Press and release
to locate your vehicle. The turn signal lamps will ash
and the horn will sound three times.
Press and hold
Lfor more than two seconds to
activate the panic alarm. The turn signal lamps will ash
and the horn will sound repeatedly for 30 seconds.
The alarm will turn off when the ignition is moved
to ON/RUN or
Lis pressed again. The ignition
must be in LOCK/OFF for the panic alarm to work.
Matching Transmitter(s) to Your
Vehicle
Each RKE transmitter is coded to prevent another
transmitter from unlocking your vehicle. If a transmitter is
lost or stolen, a replacement can be purchased through
your dealer/retailer. All transmitters need to be re-coded
to match the new transmitter. The lost transmitter will no
longer work after the new transmitters are re-coded.
The vehicle can have a maximum of eight transmitters
matched to it. See “Relearn Remote Key” underDIC
Operation and Displays (With DIC Buttons) on page 3-57
orDIC Operation and Displays (Without DIC Buttons)
on page 3-63for instructions on how to match RKE
transmitters to your vehicle.
Battery Replacement
Replace the battery if the REPLACE BATTERY
IN REMOTE KEY message displays in the DIC.
See “REPLACE BATTERY IN REMOTE KEY” under
DIC Warnings and Messages on page 3-66for additional
information.
Notice:When replacing the battery, do not to touch
any of the circuitry on the transmitter. Static from
your body could damage the transmitter.
2-6