OnStar Services

See also:

CTS Coupe in the Market
In terms of arresting exterior design and luxurious cabin furnishings, the CTS coupe has it made. Many coupe buyers, though, want more than a car that just looks great: They want something that go ...

Adjusting the Speakers (Balance/Fade)
BAL/FADE (Balance/Fade): To adjust balance or fade: 1. Press the TUNE/TONE knob until the speaker control tabs display. 2. Continue pressing the TUNE/ TONE knob, or press the softkey under ...

Engine Fan
The vehicle has electric cooling fans. The fans spinning at low speed during most everyday driving might be heard. The fans can turn off if no cooling is required. Under heavy vehicle loading, tra ...