2004 Cadillac Seville Owner's Manual - Page 172

SERVICE STABILITY SYS - 54: If you ever see the SERVICE STABILITY SYS message, it means there may be a problem with your stability enhancement system. If you see this message, try to reset the system (stop, turn off the engine, then start the engine again). If the SERVICE STABILITY SYS message still comes on, it means there is a problem. You should see your dealer for service. Reduce your speed and drive accordingly. A single chime will also sound when this message is displayed. SERVICE STEERING - 127: This message is displayed when a problem has been detected in the magnetic speed variable assist steering system. If message comes on, service is required. SERVICE SUSPENSION SYS - 84: This message is displayed to indicate that the suspension system is not operating properly. To correct this problem, have your vehicle serviced at your dealership. SERVICE THEFT SYSTEM - 34: This message means there is a problem with the PASS-Key® III system. A fault has been detected in the system which means that the system is disabled and is not protecting the vehicle. The vehicle usually restarts, however, you may want to take your vehicle to your dealer before turning off the engine. SERVICE TPM SYSTEM - 51: When this message is displayed, the Tire Pressure Monitor (TPM) system is not working properly. See your dealer for service. SERVICE TRANSMISSION - 100: See your dealer for repair. SERVICE VEHICLE SOON - 3: This message is displayed when a non-emissions related powertrain malfunction occurs. Have your vehicle serviced by a technician as soon as possible. SPEED LIMIT TO 90 - 113: A failure in the suspension control system has occurred when this message appears. The Powertrain Control Module (PCM) determines the speed to which your vehicle is limited. Have your vehicle serviced if this message appears. STABILITY SYS ENGAGED - 55: You may see the STABILITY SYS ENGAGED message on the Driver Information Center. It means that an advanced, computer-controlled system has come on to help your vehicle continue to go in the direction in which you are steering. This stability enhancement system activates when the computer senses that your vehicle is just starting to spin, as it might if you hit a patch of ice or other slippery spot on the road. When the system is on, you may hear a noise or feel a vibration in the brake pedal. This is normal. 3-60