1997 Pontiac Firebird Owner's Manual - Page 278

Radiator Pressure Cap(All Engines) Power Steering Fluid I NOTICE: Your radiator capis an 18 psi (124 kPa) to pressure-type cap and must be tightly installed prevent coolant loss and possible engine damage from overheating.Be sure the arrows the cap on line up with the overflow tube on the radiator filler neck. When you replace your radiator pressure cap,an AC@ cap is recommended. - Thermostat Engine coolant temperature is controlled a thermostat by in the engine coolant system. The thermostat the stops flow of coolant through the radiator until the coolant reaches a preset temperature. When you replace yourthermostat, an AC@thermostat is recommended. 3800 Engine When to Check Power SteeringFluid It is not necessary to regularly check power steering fluid unless you suspect there is a leak in the system or you hear an unusual noise. A fluid loss in this system could indicatea problem. Havethe system inspected and repaired. 6-33