Chevrolet Avalanche 2004 Owner's Manual page 527

In a crash or near crash event, computer systems, such
as the Air Bag 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, safety belt usage, air bag readiness, air
bag 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
confidentiality is to be maintained and need is
shown, or
•
share summary data which is not tied to a specific
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
®
the OnStar subscription service agreement or manual
for information on its operations and data collection.
®
, please check
7-11