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 ...

Rear Window Defogger
(Rear Window Defogger): Press to turn the rear window defogger on or off. The rear window defogger turns off automatically after about 10 minutes. If turned on again it runs for about five minute ...

Cooling System
The cooling system allows the engine to maintain the correct working temperature. A. Engine Cooling Fan (Out of View) B. Engine Coolant Surge Tank and Pressure Cap WARNING An electric engine c ...