If your vehicle has power locks, it has a programmable automatic door unlock feature.
The doors can be programmed through the Driver Information Center (DIC) to automatically unlock several ways. See DIC Vehicle Personalization for more information.
Chevrolet Cobalt Owners Manual. Tire Inspection and Rotation
We recommend that you regularly inspect the
vehicle's tires, including the spare tire, if the
vehicle has one, for signs of wear or damage.
SeeWhen It Is Time for New Tires
for more information.
Tires should be rotated every 5,000 to 8,000 miles
(8 000 to 13 000 km). See Scheduled Maintenance. ...