See also:

Safety Locks (Sedan and Wagon)
The vehicle has rear door security locks. These prevent passengers from opening the rear doors from the inside. Lock Label shown The rear door security locks are located on the inside edge ...

OnStar Overview
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. The OnStar system ...

Rear Seat Pass-Through Door
Some vehicles have a rear seat pass-through door in the center of the rear seatback. Fold down the center armrest and push down on the latch to open the door. ...