1996 Pontiac Firebird Owner's Manual - Page 270

If this light comes on, it means you're low on engine coolant. LAUTION: "urning the radiator pressure cap when the engine and radiator arehot can allowsteam and you scalding liquids to blow out and burn badlyNever turn the pressure cap even a little when the engine and radiator are hot. LOW COOLANT -- -- 5.7L LT1 Engine .. j, Adding Coolantto the Recovery Tank Add coolant mix at the recovery tank, but be carefulnot to spill it. I If you need more coolant, add the proper mix at the emban& recovery tank, but only when your engine is cool. If the tank is very low or empty, also add coolant to the radiator.See "Engine Overheating" in Index the for information. You can beburned if you spill coolanton hot engine parts. Coolant contains ethylene glycol, and itwill burn if the engine parts arehot enough. Don't spill coolant onhot engine. a