The doors will lock automatically when all doors are closed, the ignition is on, and the vehicle is shifted out of P (Park).
If a vehicle door is unlocked and then opened and closed, the doors will lock either when your foot is removed from the brake or the vehicle speed becomes faster than 13 km/h (8 mph).
To unlock the doors:
on the power
door lock
switch.Automatic door locking cannot be disabled. Automatic door unlocking can be programmed. See Vehicle Personalization.
Delayed Locking
Lockout Protection#13-00-89-006: Warranty Administration – Changes in Powertrain Warranty Coverage Effective with 2010 Model Year - (May 28, 2013)
Subject:Warranty Administration – Changes in Powertrain Warranty Coverage Effective with 2010Model YearModels: 2010-2014 GM Passenger Cars and Trucks Following a competitive assessment, effective with the 2010 Model Year and beyond,General Motors made changes to the 5 year/100,000 mile (160,00 ...