2008 Cadillac CTS Owner's Manual - Page 170

Engine Speed Limiter This feature prevents the engine from operating at too many revolutions per minute (rpm). When the engine's rpms are too high, the throttle is closed to reduce speed. If this is not sufficient, then the fuel supply to the engine will be limited. When the rpms return to normal, the fuel supply will return to normal. This helps prevent damage to the engine. Passenger Safety Belt Reminder Light Several seconds after the engine is started, a chime will sound for several seconds to remind the front passenger to buckle their safety belt. This would only occur if the passenger airbag is enabled. See Passenger Sensing System on page 1-64 for more information. The passenger safety belt light, located on the instrument panel, will come on and stay on for several seconds and then flash for several more. This chime and light are repeated if the passenger remains unbuckled and the vehicle is in motion. Safety Belt Reminders Safety Belt Reminder Light When the engine is started, a chime will come on for several seconds to remind people to fasten their safety belts, unless the driver's safety belt is already buckled. The safety belt light will also come on and stay on for several seconds, then it will flash for several more. If the passenger's safety belt is buckled, neither the chime nor the light will come on. This chime and light is repeated if the driver remains unbuckled and the vehicle is in motion. If the driver's belt is already buckled, neither the chime nor the light will come on. 3-32