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 ...

Lamp Messages
SERVICE LEFT HEADLAMP ASSEMBLY On some models, this message will be displayed when the left headlamp is out and needs to be serviced. See “LED Lighting” in LED Lighting   for more infor ...

Information Displays
Driver Information Center (DIC) The DIC displays information about the vehicle. It also displays warning messages if a system problem is detected. See Vehicle Messages for more information. All m ...