The vehicle has a battery saver feature designed to protect the vehicle's battery.
When any interior lamp is left on and the ignition is turned off, the battery rundown protection system automatically turns the lamp off after 20 minutes.
This prevents draining of the battery.
Electric Power Management
Accessory Power Outlet(s)Chevrolet Cobalt Service & Repair Manual. Wheel Alignment
Preliminary Inspection
1.
Ensure all tires are of recommended
size and are inflated to proper pressure.
2.
Inspect all tires for damage and uneven
tread wear.
3.
Ensure wheel bearings, control arm
...