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:
Rear Side Door Window Weatherstrip Replacement (Sedan)
Rear Side Door Window Weatherstrip Replacement
Callout
Component Name
Preliminary Procedures
The rear door side window weatherstrip and window is serviced as
one assembly. Refer to Rear Side Door Stationary Window Replacement. ...
Rear Side Door Window Regulator Replacement (Hatchback)
Rear Side Door Window Regulator Replacement
Callout
Component Name
Warning: Refer to Glass and Sheet Metal Handling Warning.
Preliminary Procedure
Remove the front side door window from the guide. Do not remove ...
Transmission Fluid Cooler Flushing and Flow Test
GM studies indicate that plugged or restricted transmission oil coolers and pipes
cause insufficient transmission lubrication and elevated operating temperatures
which can lead to premature transmission failure. Many repeat repair cases could
have been prevented by following published procedur ...
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