2004 Chevrolet Corvette Owner's Manual - Page 268

Coolant Surge Tank Pressure Cap Notice: If the pressure cap is not tightly installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured. See Engine Compartment Overview on page 5-12 for information on location. Overheated Engine Protection Operating Mode If an overheated engine condition exists and the messages COOLANT OVER TEMP and REDUCED ENGINE POWER are displayed, along with the Check Engine light, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage. In this mode, you will notice a loss in power and engine performance. This operating mode allows your vehicle to be driven to a safe place in an emergency; you may drive up to 50 miles (80 km). Notice: After driving in the overheated engine protection operating mode, to avoid engine damage, allow the engine to cool before attempting any repair. The engine oil will be severely degraded. Repair the cause of coolant loss, change the oil and reset the oil life system. See Engine Oil on page 5-13. Engine Overheating You will find an engine coolant temperature gage on the instrument panel cluster and a COOLANT OVER TEMP message on the Driver Information Center (DIC). See Engine Coolant Temperature Gage on page 3-41 and DIC Warnings and Messages on page 3-58. 5-26