OnStar Services

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Under the Hood
A 185-horsepower, 3.4-liter V-6 engine generates 210 pounds-feet of torque and teams with a four-speed-automatic transmission. Versatrak on-demand AWD is standard on the upscale CXL model and opti ...

If a Tire Goes Flat
It is unusual for a tire to blow out while driving, especially if the tires are maintained properly. If air goes out of a tire, it is much more likely to leak out slowly. But if there ever is a bl ...

Muting a Call
During a call, all sounds from inside the vehicle can be muted so that the person on the other end of the call cannot hear them. To mute a call, press , and then say “Mute Call.”. To can ...