1997 Pontiac Bonneville Owner's Manual - Page 119

Battery Light This light will come on briefly when you start the vehicle, as a check to show you it is working; then it should go out. Voltmeter You may have a voltmeter unless you have the supercharged engine. VOLT If it stays on, OF comes on while you are driving, you may have a problem with the electrical charging system. It could indicate that you have a generator problem or another electrical system problem. Have it checked right away. Driving while this light is on could drain your battery. If you must drive a short distance with the light on, be certain to turn off all your accessories, such as the radio and climate control system. When the engine is running, the gage shows the condition of the charging system. Readings outside the red warning zone indicate the normal operating range. geadings in the red warning zone Indicate a possible problem in the electrical system. The CHECK GAGES light will also come on, and a warning chime will sound. Have your vehicle serviced immediately. Some clusters with gages do not have a battery warning light. They have a CHECK GAGES warning to indi'cate a problem. Vehicles with th'e supercharged engine also have a simil'arbattery warning light. 2-66