See also:

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if ...

Power Door Locks
(Unlock): Press to unlock all doors. (Lock): Press to lock all doors. See “Power Door Locks” in Vehicle Personalization . ...

Automatic Door Unlock
The doors will automatically unlock when the shift lever is moved into P (Park). See Vehicle Personalization . ...