2011 GMC Savana 3500 Cargo Owner's Manual - Page 132

5-16 Instruments and Controls When the engine is running, the gauge shows the condition of the charging system. Readings between the low and high warning zones indicate the normal operating range. Readings in the low warning zone may occur when a large number of electrical accessories are operating in the vehicle and the engine is left at an idle for an extended period. This condition is normal since the charging system is not able to provide full power at engine idle. As engine speeds are increased, this condition should correct itself as higher engine speeds allow the charging system to create maximum power. The vehicle can be only driven for a short time with the reading in either warning zone. If it must be driven, turn off all unnecessary accessories. Readings in either warning zone indicate a possible problem in the electrical system. Have the vehicle serviced as soon as possible. Safety Belt Reminders Driver Safety Belt Reminder Light There is a driver safety belt reminder light on the instrument panel cluster. Passenger Safety Belt Reminder Light When the vehicle is started, this light flashes and a chime may come on to remind drivers to fasten their safety belts. Then the light stays on solid until the belt is buckled. This cycle may continue several times if the driver remains or becomes unbuckled while the vehicle is moving. If the driver safety belt is buckled, neither the light nor chime come on. For vehicles equipped with the passenger safety belt reminder light, several seconds after the engine is started, a chime sounds for several seconds to remind the front passenger to buckle their safety belt. The passenger safety belt light flashes and then stays on solid until the belt is buckled. This cycle continues several times if the passenger remains or becomes unbuckled while the vehicle is moving. If the passenger safety belt is buckled, neither the chime nor the light comes on.