2002 GMC SIERRA Owner's Manual

2-48 Power Outside Rearview Mirrors
The controls are located on the driver's door armrest.
Move the upper selector switch to the left or right to
choose the mirror you want to adjust; then use the
arrows located on the four
-way control pad to adjust
the mirror.
The mirrors include ground illumination lamps (puddle
lamps) in the base of the mirror. For more information
on these lamps, see ªPuddle Lampsº in the Index.
Convex Outside Mirror
Your passenger's side mirror is convex. A convex mirror's
surface is curved so you can see more from the driver's seat.
CAUTION:
A convex mirror can make things (like other vehicles)
look farther away than they really are. If you cut too
sharply into the right lane, you could hit a vehicle on
your right. Check your inside mirror or glance over
your shoulder before changing lanes.
Heated Outside Rearview Mirrors
The outside rearview mirrors have a defrost mode.
To turn on the defrost feature, press the rear window
defogger button. See ªRear Window Defoggerº in the
Index for further information.
Driver's Outside Auto-Dimming
Rearview Mirror
The driver's outside mirror will adjust for the glare of any
headlamps behind you. This feature is controlled by the
on and off settings on the electrochromic mirror. See
ªElectrochromic Mirror Operationº earlier in this section.

2-49
Storage Compartments
Your vehicle includes a number of compartments for
storage of often
-used items.
Glove Box
To open your glove box, pull the lever upward and pull
the door downward.
Center Console Storage Area
Your vehicle has a console compartment between the
bucket seats.
To open it, insert and turn the console key in the lock,
and unlock the console. Press the button on the side and
swing the console lid open.

2-50 Cupholders
Your vehicle is equipped with cupholders, for the front
and rear seat passengers, located in the center console
and on the rear of the center console storage area. To use
the front cupholders press down on the raised area of the
access door. Close the door by pushing it all the way
down until it locks back into place. To access the rear
cupholders, pull down on the door located on the back
of the console.
Tonneau Cover
1. To remove, unsnap the
cover. Roll it up and
stow it using the buckle
and the strap located at
the front of the box.
A. Back rail
B. Side rail
C. Rear bowD. Center bow
E. Front bow
F. Front rail
2. Remove the tonneau cover from the notch in the
front rail on the driver's side of the vehicle.

2-51
3. Remove the three bows by gently pushing them
against the spring
-loaded end. The three bows are
labeled front, center, rear to remind you of the order
in which to reinstall them.
4. To add cargo to the box,
remove all bows and
the back rail and stow
them safely.
To clean the tonneau cover, use mild soap and water.
If necessary, use a soft bristle brush to remove dirt
trapped in the grain of the material.

2-52
Ashtray and Cigarette Lighter
The ashtray is located in the center console. Press the
raised area on the access door to use the ashtray.
To remove the ashtray first locate the indent on the right
side of the ashtray. Then, place an instrument, such as a
pen, in the indent and pry the ashtray out.
NOTICE:
If you store paper or other things that burn
in your ashtrays, they could be set on fire by
cigarettes or other smoking materials. That could
cause a fire and possibly damage your vehicle.
Do not store papers and other things that burn in
your ashtrays.
To use the cigarette lighter, push it in all the way, and
let go. When it's ready, it will pop back out by itself.
NOTICE:
Holding a cigarette lighter in with your hand
while it's heating can make it overload, damaging
the lighter and the heating element. Just push the
lighter all the way in and let go. When it's done,
it will pop back out by itself.
Sun Visors
To block out glare, you can swing down the top and
bottom visors. You can also swing the bottom visor
from side
-to-side. The visors also have an extension
that can be pulled out for additional glare protection.
Illuminated Visor Vanity Mirrors
Pull the sun visor down and lift the mirror cover to
turn on the lamps. There is a slide switch to adjust
the intensity of the lamps.

2-53
Accessory Power Outlets
With accessory power outlets you can plug in auxiliary
electrical equipment such as a cellular telephone or
other devices designed to operate with vehicle
electrical systems.
Your vehicle is equipped with four accessory power
outlets. The front outlet is located next to the
Secondary Information Center (SIC) on the floor
console. Lift up on the door to access the outlet.
The second outlet is located in the center console.
Press the button on the side of the console door to
access the outlet. See ªCenter Console Storage Areaº
earlier in this section for more information.
There are also two accessory power outlets located on
the rear of the center console. Lift up on the doors to
access the outlets.
Certain electrical accessories may not be compatible
with the accessory power outlets and could result in
blown vehicle or adapter fuses. If you experience a
problem, see your dealer for additional information
on accessory power outlets.NOTICE:
Adding some electrical equipment to your vehicle
can damage it or keep other things from working
as they should. This wouldn't be covered by your
warranty. Check with your dealer before adding
electrical equipment, and never use anything that
exceeds the amperage rating.
When adding electrical equipment, be sure to follow
the proper installation instructions included with
the equipment.
NOTICE:
Power outlets are designed for accessory plugs
only. Do not hang any type of accessory or
accessory bracket from the plug. Improper use
of the power outlet can cause damage not covered
by your warranty.

2-54
OnStar
System (If Equipped)
OnStar is a vehicle communications system that offers a
variety of services and provides a one
-touch hands-free
communication link between you and the OnStar Center.
To receive OnStar services, a service subscription
agreement is required and an additional fee may be
required. Services are available 24 hours a day, 7 days a
week. For more information, call 1
-888-ONSTAR-7
(1
-888-667-8277).
OnStar Services Button: Press this button once
to contact an advisor who will be able to assist you with
these services. If you are not quickly connected, the
system will automatically reset and redial. This ensures
connection to the center; there is no additional action
required. Press the Communication button to cancel the
automatic redial.
Emergency Button: In an emergency situation,
press the emergency service button. Upon receiving the
call, an advisor at the center will locate your vehicle and
assess the situation. If necessary, the advisor will alert
the nearest emergency service provider.
Communication Button: Press this button at
the end of a call. Also press this button to answer
a call from the center, or cancel a call if one of the
other buttons is accidentally pressed. This button is
also used to access OnStar Personal Calling and Virtual
Advisor services. See the OnStar owner package for
more information.
Volume Control: You can control the volume of
the OnStar System using either the volume control
knob on the radio or if equipped, the steering wheel
volume controls.
Telltale Light: This light will indicate the status of
the system. A solid green light will come on when you
start the vehicle to let you know that the system is on
and is ready to make or receive calls.
If the light blinks green it means that an incoming or
outgoing call is in progress. Press the Communication
button if you notice the light blinking and you are
not on a call.

2-55
The light will be red in the event of an OnStar system
malfunction. If this occurs press the OnStar button to
attempt to contact an advisor. If the connection is made,
the advisor will assist you with steps to take to make
sure that the system is functioning properly. If you
cannot contact the advisor, take your vehicle to your
dealership as soon as possible for assistance.
Cellular Antenna: The cellular antenna on the outside
of your vehicle is critical to effective communication
using the OnStar system. Optimum cellular reception
can be obtained when the mast is straight up and down.
OnStar Services
The following services are available within OnStar service
plans. Your vehicle comes with a specific one
-year service
plan that allows use of some or all of the following services.
Automatic Notification of Air Bag Deployment: If an
air bag deploys, a priority emergency signal is sent
automatically to the center. An advisor will locate your
vehicle's position, try to contact you and assist you in
the situation. If the center is unable to contact you, an
emergency service provider will be contacted.Stolen Vehicle Tracking: Call the center at
1
-888-4-ONSTAR (1-888-466-7827) to report your
vehicle stolen. The system can then attempt to locate
and track your vehicle and the advisor will assist the
proper authorities.
Roadside Assistance with Location: For vehicle
breakdowns, press the OnStar Services button.
An advisor will contact the appropriate help.
Remote Diagnostics: If an instrument panel light comes
on, press the OnStar Services button. An advisor can
perform a check of the engine on
-board computer,
and recommend what action needs to be taken.
OnStar MED
-NET: Med-Net can store your personal
medical history and provide it to emergency personnel if
necessary. (Requires activation and an additional fee.)
Accident Assist: An advisor can provide step
-by-step
guidance following an accident.
Remote Door Unlock: To contact the center, call
1
-888-4-ONSTAR. You will be required to provide your
security information. An advisor will send a command
to your vehicle to unlock itself. The advisor can delay
unlocking your vehicle. Remote Door Unlock is
disabled 48 hours after the vehicle is parked to maintain
the battery charge.