See also:

PRESS BRAKE TO START ENGINE (AUTOMATIC TRANSMISSION ONLY)
If the vehicle has the keyless access system, this message displays if you try to start the engine without having the brake pressed. The brake needs to be pressed when starting the engine. Se ...

Returning the Seat to the Sitting Position
To return the seat to the sitting position from the tumbled position: 1. Pull the seat down until it latches to the floor. The seatback cannot be raised if the seat is not latched to the floor. ...

Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five ...