1994 GMC Suburban Owner's Manual - Page 133

A reading in the low pressure zone may be caused by a dangerously low oil level or other problem causing low oil pressure. Check your oil as soon as possible. A CAUTION: Don't keep driving if the oil pressure is low. If you do, your so engine can become hot that it catches fire.You or otherscould be burned. Check your oil as soon as possible and have your vehicle serviced. NOTICE: Damage to your engine from neglected oil problems can be costly and is not coveredby your warranty. Voltmeter Standard Cluster Tachometer Cluster When your engine is not running, but the ignition is on (in the RUN Position), this gage shows your battery's state of charge in DC volts. When the engine is running, the gage shows the condition of the charging system. Readings between the low and high warning zones indicate the normal operating range. Readings i n either warning zone indicate a possible problem in the electrical system. 2-77