Airbag GMC SIERRA 2004 Owner's Manual

The compass can be calibrated by driving the vehicle in
circles at ®ve mph (8 km/h) or less until the display
reads a direction.
Compass Variance
The mirror is set in zone eight upon leaving the factory.
It will be necessary to adjust the compass to
compensate for compass variance if you live outside
zone eight. Under certain circumstances, as during
a long distance cross-country trip, it will be necessary to
adjust for compass variance. Compass variance is
the difference between earth's magnetic north and true
geographic north. If not adjusted to account for
compass variance, your compass could give false
readings.
To adjust for compass variance:
1. Find your current location and variance zone
number on the following zone map.
2. Press and hold the COMP button for ®ve seconds
until a zone number appears in the display.
3. Press the COMP button on the bottom of the mirror
until the new zone number appears in the display.
After you stop pressing the button, the display
will show a compass direction within a few seconds.
Passenger Air Bag Indicator
Your mirror may be equipped with a passenger air bag
indicator on the mirror glass, just above the buttons.
If you have this feature the mirror will display the word
ON, or an airbag symbol in Canada, when the
passenger air bag is enabled. For more information see
Passenger Sensing System on page 1-81
2-59

BUCKLE SEATBELT
If your vehicle is equipped with the passenger sensing
system, this message reminds you to buckle the
driver's and/or passenger's seatbelt. See
Passenger
Sensing System on page 1-81. The message will come
on and a chime will sound when the ignition is in
RUN and the following conditions occur:
·The driver's seatbelt is unbuckled.
·The driver's seatbelt is unbuckled and the
passenger's seatbelt is unbuckled with the
passenger airbag enabled.
Press the select button to acknowledge the message
and clear it from the DIC display.
BUCKLE PASSENGER
If your vehicle is equipped with the passenger sensing
system, this message reminds you to buckle the
passenger's seatbelt. See
Passenger Sensing System
on page 1-81. This message will come on and a
chime will sound when the ignition is in RUN and the
driver's seatbelt is buckled and the passenger's seatbelt
is unbuckled with the passenger airbag enabled.
Press the select button to acknowledge this message
and clear it from the DIC display.
CARGO LAMP ON
If the cargo lamp is on, this message will appear on the
DIC and you will hear a chime. Turn off the vehicle
and check the liftgate. Restart the vehicle and check for
the message on the DIC display. Press the select
button to acknowledge the message and clear it from
the DIC display.
CHECK OIL LEVEL
If the oil level in the vehicle is low, this message will
appear on the DIC. Check and oil level and correct it as
necessary. You may need to let the vehicle cool or warm
up and cycle the ignition to be sure this message will
clear. Once the problem is corrected, pressing the select
button will clear this message from the DIC display.
CHECK WASHER FLUID
if the washer ¯uid level is low, this message will appear
on the DIC. Adding washer ¯uid will clear the message.
Press the select button to acknowledge the message
and clear it from the DIC display.
3-67

REDUCED ENGINE POWER
This message is displayed when the cooling system
temperature gets too hot and the engine further enters
the engine coolant protection mode.
See
Engine Overheating on page 5-36for further
information.
RIGHT REAR DOOR AJAR (Crew Cab)
If the passenger's side rear door is not fully closed,
this message will appear on the display and you
will hear a chime. Stop and turn off the vehicle, check
the door for obstacles, and close the door again. Check
to see if the message still appears on the DIC. Press
the select button to acknowledge the message and clear
it from the DIC display.
SERVICE AIRBAG
If there is a problem with the air bag system, this
message will be displayed on the DIC. Have a quali®ed
technician inspect the system for problems. Press
the select button to acknowledge the message and clear
it from the DIC display.
SERVICE BRAKE SYSTEM
If there is a problem with the brake system, this
message will be displayed on the DIC. If this message
appears, stop as soon as possible and turn off the
vehicle. Restart the vehicle and check for the message
on the DIC display. If the message is still displayed,
or appears again when you begin driving, the brake
system needs service.
SERVICE BRAKE BOOSTER
If your vehicle has vaccum assist power brakes, this
message will be displayed on the DIC when there is a
problem with the Supplemental Brake Assist system.
If the message is displayed immediately after starting
the vehicle or the message appears while driving,
your Supplemental Brake Assist system needs service.
See
Brake System Warning Light on page 3-43.
3-70

Vehicle Data Collection and Event
Data Records
Your vehicle, like other modern motor vehicles, has a
number of sophisticated computer systems that monitor
and control several aspects of the vehicle's performance.
Your vehicle uses on-board vehicle computers to monitor
emission control components to optimize fuel economy,
to monitor conditions for airbag deployment and, if so
equipped, to provide anti-lock braking and to help the
driver control the vehicle in difficult driving situations.
Some information may be stored during regular
operations to facilitate repair of detected malfunctions;
other information is stored only in a crash or near crash
event by computer systems commonly called event data
recorders (EDR).
In a crash or near crash event, computer systems, such
as the Airbag Sensing and Diagnostic Module (SDM) in
your vehicle may record information about the condition
of the vehicle and how it was operated, such as engine
speed, brake applications, throttle position, vehicle
speed, seat belt usage, airbag readiness, airbag
performance data, and the severity of a collision. This
information has been used to improve vehicle crash
performance and may be used to improve crash
performance of future vehicles and driving safety. Unlike
the data recorders on many airplanes, these on-board
systems do not record sounds, such as conversation of
vehicle occupants.To read this information, special equipment is needed
and access to the vehicle or the SDM is required.
GM will not access information about a crash event or
share it with others other than·with the consent of the vehicle owner or, if the
vehicle is leased, with the consent of the lessee,
·in response to an official request of police or similar
government office,
·as part of GM's defense of litigation through the
discovery process, or
·as required by law.
In addition, once GM collects or receives data, GM may
·use the data for GM research needs,
·make it available for research where appropriate
con®dentiality is to be maintained and need is
shown, or
·share summary data which is not tied to a speci®c
vehicle with non-GM organizations for research
purposes.
Others, such as law enforcement, may have access to
the special equipment that can read the information
if they have access to the vehicle or SDM.
If your vehicle is equipped with OnStar, please check
the OnStar subscription service agreement or manual for
information on its operations and data collection.
7-10

A
Accessory Power Outlets.................................3-20
Adding a Snow Plow or Similar Equipment.........4-64
Adding Washer Fluid.......................................5-46
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment...........................5-125
Add-On Equipment..........................................4-63
Adjusting the Speakers
(Balance/Fade)..................3-76, 3-80, 3-91, 3-105
After Off-Road Driving.....................................4-37
Air Bag
Off Light.....................................................3-37
Passenger Status Indicator...........................3-40
Readiness Light..........................................3-36
Air Bag Systems.............................................1-70
Adding Equipment to Your Air Bag-Equipped
Vehicle...................................................1-86
Air Bag Off Switch.......................................1-76
How Does an Air Bag Restrain?....................1-75
Passenger Sensing System...........................1-81
Servicing Your Air Bag-Equipped Vehicle.........1-86
What Makes an Air Bag In¯ate?....................1-74
What Will You See After an Air Bag In¯ates?......1-75
When Should an Air Bag In¯ate?...................1-73
Where Are the Air Bags?..............................1-72
Air Cleaner/Filter, Engine.................................5-23
Air Conditioning..............................................3-30
Airbag Sensing and Diagnostic Module (SDM)....7-10All Overseas Locations...................................... 7-5
AM .............................................................3-129
AM-FM Radio.................................................3-74
Antenna, Fixed Mast......................................3-131
Antenna, XMŸ Satellite Radio Antenna
System.....................................................3-131
Anti-lock Brake System..................................... 4-7
Anti-Lock Brake, System Warning Light..............3-45
Appearance Care..........................................5-116
Care of Safety Belts...................................5-119
Chemical Paint Spotting..............................5-123
Cleaning the Inside of Your Vehicle..............5-117
Cleaning the Outside of Your Vehicle............5-120
Finish Damage..........................................5-122
Sheet Metal Damage..................................5-122
Underbody Maintenance.............................5-123
Vehicle Care/Appearance Materials...............5-123
Weatherstrips............................................5-119
Approaching a Hill..........................................4-27
Ashtrays........................................................3-21
Audio Output................................................3-123
Audio System(s).............................................3-73
AM-FM Radio.............................................3-74
Audio Steering Wheel Controls....................3-128
Care of Your Cassette Tape Player...............3-129
Care of Your CD and DVD Player................3-131
Care of Your CDs and DVDs.......................3-130
Chime Level Adjustment.............................3-131
Fixed Mast Antenna...................................3-131
Radio with Cassette and CD.........................3-88
1

Safety Belts (cont.)
Driver Position............................................1-16
How to Wear Safety Belts Properly................1-16
Questions and Answers About Safety Belts.....1-15
Rear Safety Belt Comfort Guides for Children
and Small Adults......................................1-30
Rear Seat Passengers.................................1-27
Right Front Passenger Position......................1-25
Safety Belt Extender....................................1-32
Safety Belt Use During Pregnancy.................1-24
Safety Belts Are for Everyone.......................1-11
Safety Chains.................................................4-90
Safety Warnings and Symbols.............................. iii
Scanning the Terrain.......................................4-25
Scheduled Maintenance..................................... 6-4
Seatback Latches............................................. 1-8
Seats
Head Restraints............................................ 1-8
Heated Seats............................................... 1-6
Manual........................................................ 1-3
Memory.....................................................2-69
Power Lumbar.............................................. 1-5
Power Seats................................................. 1-4
Rear Seat Operation...................................... 1-9
Reclining Seatbacks...................................... 1-6
Seatback Latches.......................................... 1-8
Secondary Latch System................................5-112
Securing a Child Restraint
Center Front Seat Position............................1-60
Center Rear Seat Position............................1-58Securing a Child Restraint (cont.)
Designed for the LATCH System...........1-50, 1-51
Rear Outside Seat Position...........................1-55
Security While You Travel.................................. 7-6
Select Button.................................................3-66
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-4
Doing Your Own Work................................... 5-3
Engine Soon Light.......................................3-49
Publications Ordering Information...................7-12
SERVICE 4 WHEEL STEER.............................3-71
SERVICE 4WD...............................................3-71
SERVICE AIRBAG..........................................3-70
SERVICE BRAKE BOOSTER...........................3-70
SERVICE BRAKE SYSTEM.............................3-70
Service Bulletins.............................................7-12
Service Manuals.............................................7-12
SERVICE RIDE CONTROL..............................3-71
Setting Preset PTYs (RDS Only).....3-81, 3-93, 3-106
Setting Preset Stations..........3-75, 3-79, 3-90, 3-104
Setting the Time
Radios with Radio Data Systems (RDS).........3-74
Radios without Radio Data Systems (RDS).....3-74
Setting the Tone
(Bass/Treble)....................3-75, 3-79, 3-91, 3-104
Sheet Metal Damage.....................................5-122
Shift Speeds..................................................2-34
Shifting Into Park (P).......................................2-49
Shifting Out of Park (P)...................................2-51
14