GMC 2002 Sierra - Manual (Page 172)

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Volume Control: You can control the volume of the
OnStar System using either the volume knob on the
radio or if equipped, the steering wheel volume controls.
Telltale Light: This light will indicate the status of
the system. A solid green light will come on when you
start the vehicle to let you know that the system is on
and is ready to make or receive calls.
If the light blinks green it means that an incoming or
outgoing call is in progress. Press the Communication
button if you notice the light blinking and you are not
on a call.
The light will be red in the event of an OnStar system
malfunction. If this occurs press the OnStar button to
attempt to contact an advisor. If the connection is made,
the advisor will assist you with steps to take to make
sure that the system is functioning properly. If you
cannot contact the advisor, take your vehicle to your
dealership as soon as possible for assistance.
Cellular Antenna: The cellular antenna on the outside
of your vehicle is critical to effective communications
using the OnStar system. Optimum cellular reception
can be obtained when the mast is straight up and down.
OnStar Services
The following services are available within OnStar
service plans. Your vehicle comes with a specific
one
- year service plan that allows use of some or all of
the following services.
D Automatic Notification of Air Bag
Deployment: If an air bag deploys, a priority
emergency signal is sent automatically to the center.
An advisor will locate your vehicle’s position, try to
contact you and assist you in the situation. If the
center is unable to contact you, an emergency service
provider will be contacted.
D Stolen Vehicle Tracking: Call the center at
1 - 888 - 4 - ONSTAR (1 - 888 - 466 - 7827) to report
your vehicle stolen. The system can then attempt to
locate and track your vehicle and the advisor will
assist the proper authorities.
D Roadside Assistance with Location: For vehicle
breakdowns, press the OnStar Services button. An
advisor will contact the appropriate help.
D Remote Diagnostics: If an instrument panel
light comes on, press the OnStar Services button.
An advisor can perform a check of the engine
on
- board computer, and recommend what action
needs to be taken.