1994 Cadillac Fleetwood Owner's Manual - Page 282
1994 Cadillac Fleetwood Manual
Page 282 highlights
When replacing the pressure cap, make sure it is tight. SURGE TANK PRESSURE CAP NOTICE: Your surge tank cap a 15 psi (105 kPa) pressure-type cap and is must be tightly installed to prevent coolantloss and possible engine damage from overheating. Be sure the arrows on the cap line up with the overflow tube on the radiator filler neck. When you replace your surge tank pressure cap, an GM cap is recommended. THERMOSTAT Engine coolant temperature is controlled by a thermostat in the engine coolant system. The thermostat stops the flow of coolant through the radiator until the coolant reaches a preset temperature. When you replace your thermostat, an AC@thermostat is recommended. 269