1993 Chevrolet Corvette Owner's Manual - Page 219

Problems on the Road . - How to Add Coo/ant to the Coolant How fa Add Coolant to the Coolant High FM Reservoir-LT1 On/y Recovery Tank (CONT.) CAUTlON Steam and scalding liquids from a hot cooling system can blow out and burn you badly. They are under pressure, and if you turn the.coolanthigh fill reservoir pressure cap-even a little-they can come out at high speed. Never turn the cap whenthe cooling system, including the coolant high fill reservoir pressure cap, is hot. Wait for the cooling systemand coolant high fill reservoir pressure cap to cool if you ever haveto turn the pressure cap. 1. You can remove the coolant high fill reservoir pressurecap when the cooling system, includingthe coolant high fill reservoirpressure cap and upper radiator hose, is no longer hot. Turn the cap slowly to the left until it first stops. (Don't press down while turning the pressure cap.) If you hear a hiss, wait for that to stop. A hiss means there is still some pressure left.