Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.
See also:
Battery
Refer to the replacement number shown on the original battery label when a new battery is needed. See Engine Compartment Overview for battery location.
DANGER
Battery posts, terminals, and r ...
SBZA Detection Zones
The SBZA sensor covers a zone of
approximately one lane over from
both sides of the vehicle,
or 3.5m(11 ft). This zone starts at
each side mirror and goes back
approximately 5.0 m(16 ft). Th ...
Automatic Headlamp System
When it is dark enough outside and the exterior lamps control is in the automatic
position, the headlamps come on automatically. See Exterior Lamp Controls .
The vehicle has a light sensor locate ...