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 Service & Repair Manual. Tightening Specifications
Year
Component
Torque Ft. Lbs.
AVEO
2010
Bleeder Screw
80 1
Bleeder Valve
53 1
Booster & Support Bracket
18
...