1993 Pontiac Grand Am Owner's Manual - Page 96

Oil Pressure Gage (omrorv) The oil pressure gage shows the engine oil pressure in psi (pounds per square inch) when the engine is running. Canadian vehicles indicate pressure in kPa. Oil pressure may vary with engine speed, outside temperature and oil viscosity, but readings above the red warning zone indicate the normal operating range. A reading in the red zone may be caused by a dangerously low oil levelor other problem causing low oil pressure. Have your vehicle serviced immediately. Charging System Light A Don't keep driving if the oil pressure is low. If you do, your engine can becomeso hot that it catches fire. You or others could be burned. Check your oil as soon as possible and have your vehicle serviced. The charging system light willcome on briefly when you turn on the ignition, but the engine is not running,as a check to show you it is working. Then it should go out. If it stays on when your engine is running, or comes on while you are driving, you may have a problem with theelectrical charging system. It could indicate that you have a loose generator drive belt or another electrical problem. Haveit checked right away. Driving while this light is on could drain your battery. If you must drivea short distance with the light on, be certain toturn off all your accessories, such as the radio and air conditioner. 95