See also:

Automatic Door Lock
The doors are programmed to automatically lock when the shift lever is moved out of P (Park). The automatic door lock feature cannot be disabled. ...

Automatic Crash Response
In a crash, built in sensors can automatically alert an OnStar advisor who is immediately connected to the vehicle to see if you need help. ...

Tires
Use a stiff brush with tire cleaner to clean the tires. Notice: Using petroleum-based tire dressing products on the vehicle may damage the paint finish and/or tires. When applying a tire dressing, ...