2005 Cadillac CTS Owner's Manual - Page 195

Driver Door Ajar When this message appears on the display, it means that the driver's door was not closed completely. You should make sure that the driver's door is closed completely. When the coolant temperature returns to normal, the air conditioning compressor will turn back on. You can continue to drive your vehicle. If this message continues to appear, have the system repaired by your GM dealer as soon as possible to avoid damage to the engine or transmission. Engine Coolant Hot - Idle Engine This message will appear when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down. Engine Overheated - Stop Engine This message will appear when the engine has overheated. Stop the vehicle and turn the engine off immediately to avoid severe engine damage. See Engine Overheating on page 5-29. A chime will also sound when this message is displayed. Notice: If you drive your vehicle while the engine is overheating, severe engine damage may occur. If an overheat warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. Do not increase the engine speed above normal idling speed. See Engine Overheating on page 5-29 for more information. Engine Coolant Hot - AC (Air Conditioning) Off This message displays when the engine coolant becomes hotter than the normal operating temperature. To avoid added strain on a hot engine, the air conditioning compressor is automatically turned off. Notice: If you drive your vehicle while the engine is overheating, severe engine damage may occur. If an overheat warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. Do not increase the engine speed above normal idling speed. See Engine Overheating on page 5-29 for more information. Engine Power Reduced This message informs you that the vehicle is reducing engine power to try to protect the engine or transmission from damage due to extreme operating conditions. This also can affect the vehicle's ability to accelerate. 3-69