1999 Chevrolet Corvette Owner's Manual - Page 244
1999 Chevrolet Corvette Manual
Page 244 highlights
yellowblue 1. You can remove the coolant surge tank pressure cap when the cooling system, including the coolant surge tank pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly counterclockwise (left) about one-quarter turn and then stop. If you hear a hiss, wait for that to stop. A hiss means there is still some pressure left. 2. Then keep turning the pressure cap slowly, and remove it. 3. Then fill the coolant surge tank with the proper mixture, to the FULL COLD mark on the coolant surge tank. 5-16
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yellow
blue
5-16
1.
You can remove the coolant surge tank pressure cap
when the cooling system, including the coolant surge
tank pressure cap and upper radiator hose, is no
longer hot. Turn the pressure cap slowly
counterclockwise (left) about one
-
quarter turn and
then stop.
If you hear a hiss, wait for that to stop. A hiss means
there is still some pressure left.
2.
Then keep turning the pressure cap slowly, and
remove it.
3.
Then fill the coolant surge tank with the proper
mixture, to the FULL COLD mark on the coolant
surge tank.