GMC Envoy Owner's Manual page 486

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. 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.
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 the device
that stores the data.
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