Chevrolet 2007 Express 2007 Express, Owner'S Manual

Page: 431 / 452

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 StabiliTrak
®
,
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.
431