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. Ignition Lock, Replace
1.
Lower steering column to lowest position.
2.
Remove steering column upper and lower
trim covers.
3.
Remove theft deterrent control module.
4.
Depress first retainer through loc ...