OnStar Services

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AM
The range for most AM stations is greater than for FM, especially at night. The longer range can cause station frequencies to interfere with each other. For better radio reception, most AM radio s ...

When to Change Engine Oil
This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and mile ...

Playing a CD
A disc must be loaded to select the source. When a disc is loaded, the disc icon displays. There are two ways to play a CD: • Insert the disc and playback starts automatically. • Press C ...