Cadillac 2004 CTS - Manual (Page 194)

Service Charging System
This symbol appears with
the Service Charging
System message.
This message will display when a problem with the
charging system has been detected. Have your vehicle
serviced at your dealership.
Service Electrical System
This symbol appears with
the Service Electrical
System message.
This message will display if an electrical problem has
occurred within the Powertrain Control Module (PCM) or
the ignition switch. Have your vehicle serviced by
your dealership.
Service Fuel System
This symbol appears with
the Service Fuel System
message.
The Powertrain Control Module (PCM) has detected a
problem within the fuel system when this message
appears. Have your vehicle serviced by your dealership.
Service Idle Control
This symbol appears with
the Service Idle Control
message.
A problem with the idle control has occurred when this
message displays. Have your vehicle serviced by
your dealership.
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