air condition GMC SIERRA 2005 Service Manual

Vehicle Data Collection and Event
Data Recorders
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 event by
computer systems, such as those commonly called event
data recorders (EDR).
In a 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 data related to
engine speed, brake application, throttle position,
vehicle speed, safety belt usage, airbag readiness,
airbag performance, and the severity of a collision.If your vehicle is equipped with Quadrasteer, steering
performance, including yaw rate, steering wheel
angle, and lateral acceleration, is also recorded. 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 device that stores
the data 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.
7-9

A
Accessory Power Outlets.................................3-19
Adding Equipment to Your Airbag-Equipped
Vehicle.......................................................1-81
Additives, Fuel................................................. 5-7
Add-On Electrical Equipment...........................5-121
Air Cleaner/Filter, Engine.................................5-25
Air Conditioning..............................3-21, 3-22, 3-25
Airbag
Off Light.....................................................3-34
Passenger Status Indicator...........................3-36
Readiness Light..........................................3-34
Airbag Sensing and Diagnostic Module (SDM)...... 7-9
Airbag System................................................1-66
Adding Equipment to Your Airbag-Equipped
Vehicle...................................................1-81
Airbag Off Switch........................................1-73
How Does an Airbag Restrain?......................1-71
Passenger Sensing System...........................1-76
Servicing Your Airbag-Equipped Vehicle..........1-80
What Makes an Airbag Inate?......................1-71
What Will You See After an Airbag Inates?....1-72
When Should an Airbag Inate?....................1-69
Where Are the Airbags?...............................1-68
AM-FM Radio.................................................3-70
Antenna, Fixed Mast......................................3-127
Antenna, XMâ„¢ Satellite Radio Antenna System . . . 3-127
Anti-Lock Brake System (ABS)........................... 4-6
Anti-Lock Brake, System Warning Light..............3-41Appearance Care..........................................5-112
Aluminum or Chrome-Plated Wheels.............5-117
Care of Safety Belts...................................5-115
Chemical Paint Spotting..............................5-119
Cleaning Exterior Lamps/Lenses..................5-116
Fabric/Carpet............................................5-113
Finish Care...............................................5-116
Finish Damage..........................................5-118
Glass Surfaces..........................................5-115
Instrument Panel........................................5-115
Interior Plastic Components.........................5-115
Leather....................................................5-114
Sheet Metal Damage..................................5-118
Tires........................................................5-118
Underbody Maintenance.............................5-119
Vehicle Care/Appearance Materials...............5-119
Vinyl........................................................5-114
Washing Your Vehicle.................................5-116
Weatherstrips............................................5-115
Windshield and Wiper Blades......................5-117
Ashtrays........................................................3-20
Audio System(s).............................................3-69
AM-FM Radio.............................................3-70
Audio Steering Wheel Controls....................3-124
Care of Your Cassette Tape Player...............3-125
Care of Your CD and DVD Player................3-126
Care of Your CDs and DVDs.......................3-126
Chime Level Adjustment.............................3-127
Fixed Mast Antenna...................................3-127
Radio with Cassette and CD.........................3-83
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