Warning Lights, Gauges, and Indicators

Warning lights and gauges can signal that something is wrong before it becomes serious enough to cause an expensive repair or replacement. Paying attention to the warning lights and gauges could p ...

Speedometer

The speedometer shows the vehicle's speed in either kilometers per hour (km/h) or miles per hour (mph). ...

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Flash-to-Pass
This feature is used to signal to the vehicle ahead that you want to pass. If the headlamps are off or in the low-beam position, pull the turn signal lever toward you to momentarily switch to high ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the veh ...

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