1993 Chevrolet Corvette Owner's Manual - Page 266

1. When the..engine-is cool, remove the pressure .cap. .Without pressing down on the pressure cap, turn it slowly to the. left .until.itreaches a "stop." If YOU hear a hiss, it means there is still some pressure. Wait for the hiss to stop. Then press down on the pregsure-cap and continue turning it to the left. Remove the pressure cap. 2. After the engine cools, open the air bleed valves on the throttle body and water pump inlet. 3 . with the proper mix. Add .coolant .fill until. you see a steady stream of. coolant corning.frarn.thebleed vdves. 4, Then close the bleed valves. 5. Continue to fiH the coolant high .fill. reservoir u.p to the base of the €iller neck. 6. Rinse or wipe the spilled crrolant from the engine-and compartment. 7. Start the engine-and allow it .to.runin idkfor approximately four minutes. By this time,the coolknt level inside