OnStar Services

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Underbody Maintenance
Use plain water to flush dirt and debris from the vehicle's underbody. Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop. ...

Loss of Control
Let us review what driving experts say about what happens when the three control systems —brakes, steering, and acceleration — do not have enough friction where the tires meet the road to do ...

Keys
WARNING Leaving children in a vehicle with the ignition key is dangerous for many reasons. Children or others could be badly injured or even killed. They could operate the power windows or othe ...