OnStar®

OnStar® uses several innovative technologies and live advisors to provide a wide range of safety, security, navigation, diagnostics, and calling services.
See also:
Fuel Gage
When the ignition is on, the fuel gage tells you
about how much fuel you have remaining.
Here are four things that some owners ask about.
None of these show a problem with your fuel gage:
...
Brake Fluid
The brake master cylinder reservoir
is filled with DOT 3 brake fluid as
indicated on the reservoir cap. See
Engine Compartment Overview for the location of the
reservoir.
There are only two ...
Three-Way Calling
Three-way calling must be supported on the Bluetooth phone and enabled by the wireless service carrier.
1. While on a call, press
.
The system responds with “Ready,” followed by a tone.
2. Say ...
