See also:

Infotainment System Overview
The infotainment system is controlled by using the buttons on the faceplate and the touch screen. See “Infotainment Control Buttons” in this section for more information. ...

Engine Cooling System Messages
ENGINE HOT A/C (Air Conditioning) TURNED OFF This message displays when the engine coolant becomes hotter than the normal operating temperature. See Engine Coolant Temperature Gauge on page 5‑ ...

Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment on page 9‑112. Added electrical equipment ma ...