Chevrolet Sonic Owner's Manual: Lockout Protection
If the driver side power door lock switch is pressed when the driver door is open and the key is in the ignition, all of the doors will lock and then the driver door will unlock.
If Unlocked Door Anti Lockout is turned on and: the vehicle is off, the driver door is open, and door locking is requested using a door lock switch or the RKE transmitter, all the doors will lock and only the driver door will unlock.
The Unlocked Door Anti Lockout feature can be turned on or off using the vehicle personalization menus. See Vehicle Personalization.
Lockout Protection can be manually overridden with the driver door open by pressing
and holding 
on the power door lock switch.
Automatic Door Locks
The vehicle is programmed so that when the doors are closed, the ignition is
on, and the shift lever is moved out of P (Park) for automatic transmissions, or
when the vehicle speed is above 13 km/ ...
Safety Locks
The rear door safety locks prevent passengers from opening the rear doors from
inside the vehicle.
Manual Safety Locks
If equipped, the safety lock is located on the inside edge of the rear door ...
Other materials:
Disc Brake System Description and Operation
System Component Description
The disc brake system consists of the following components:
Disc Brake Pads
Applies mechanical output force from the hydraulic brake calipers to
friction surfaces of brake rotors.
Disc Brake Rotors
Uses mechanical output force ap ...
Park - Engine Running (Gen 1)
When the gear selector lever is in the Park (P) position, fluid is drawn into
the pump through the transmission fluid filter assembly. Line pressure is then directed
to the following valves:
Fluid Pressure Directed in Preparation for a Shift
Manual Valve
Mechanically controlled by ...
Crankshaft and Bearing Cleaning and Inspection
Special Tools
EN-45059 Torque Angle Sensor Kit
GE-571-B Dial Gauge
For equivalent regional tools, refer to Special Tools.
Crankshaft End Play, Check
Note: Crankshaft attached with crankshaft bearing caps.
Install the GE-571-B gauge (1).
...
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