Chevrolet Sonic Owner's Manual: Radio

System Settings

Auto Volume This feature automatically adjusts the radio volume to compensate for road and wind noise. The level of volume compensation can be selected, or the feature can be turned off. 1. Pre ...

AM-FM Radio

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Other materials:

Tire Pressure Light
For vehicles with the Tire Pressure Monitor System (TPMS), this light comes on briefly when the engine is started. It provides information about tire pressures and the TPMS. When the Light Is On Steady This indicates that one or more of the tires are significantly underinflated. Stop as soo ...

Tire Pressure Monitor Description and Operation
Tire Pressure Monitoring Block Diagram ...

Park Brake and P (Park) Mechanism Check
Warning: When you are doing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case it begins to roll. Be ready to apply the regular brake at once should the vehicle begin to move. ...