2007 Chevrolet Monte Carlo Owner's Manual - Page 173
2007 Chevrolet Monte Carlo Manual
Page 173 highlights
Safety Belt Reminder Light When the key is turned to RUN, 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. This chime and light will be repeated if the driver remains unbuckled and the vehicle is in motion. Passenger Safety Belt Reminder Light Several seconds after the key is turned to RUN or START, 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 77 for more information. The passenger safety belt light will also come on and stay on for several seconds, then it will flash for several more. This chime and light will be repeated if the passenger remains unbuckled and the vehicle is in motion. 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. 173