2002 Oldsmobile Alero Owner's Manual - Page 128

Engine Coolant Temperature Gage This gage shows the engine coolant temperature. If the gage pointer moves into the red area, the light comes on and you hear a chime, your engine is too hot. It means that your engine coolant has overheated. Low Coolant Warning Light This light comes on briefly when you turn your ignition on. See "Engine Overheating" in the Index. If this light comes on and stays on and you hear a chime, the coolant level in your vehicle is low. See "Engine Coolant" in the Index. If the light is on along with an overheat warning, you may have a serious overheating problem. See "Engine Coolant Temperature Gage" listed previously. NOTICE: Damage to your engine from neglected coolant problems can be costly and is not covered by your warranty. See "Engine Overheating" in the Index for information on what to do. Your vehicle should be serviced as soon as possible. 2-66