Engine Overheating - Chevrolet Corvette 2023 Owner's Manual

Chevrolet Corvette Owner Manual (GMNA-Localizing-MidEast-16287460) -
2023 - CRC - 4/26/22
If coolant is needed, be sure the cooling
system is cool, then add the proper
DEX-COOL coolant mixture directly to the
surge tank.
1. Open the Hatch/Trunk. See Hatch (Trunk)
0 19.
2. When the cooling system, including the
coolant surge tank pressure cap and
engine, is no longer hot, remove the
pressure cap.
Turn the pressure cap slowly
counterclockwise about one-quarter turn
and then stop.
If a hiss is heard, wait for that to stop.
A hiss means there is still some
pressure left.
3. Keep turning the pressure cap slowly,
and remove it.
4. Fill the coolant surge tank with the
proper mixture until the level inside
stabilizes at the COLD FILL indicator in
the surge tank.
5. With the coolant surge tank pressure cap
off, start the engine and let it run until
the engine is hot.
By this time, the coolant level inside the
coolant surge tank may be lower. If the
level is lower, add more of the proper
mixture to the coolant surge tank until
the level stabilizes at the COLD FILL
indicator in the coolant surge tank.
6. Replace the pressure cap tightly.
Vehicle Care
7. Verify coolant level after the engine is
shut off and the coolant is cold.
If necessary, repeat coolant fill procedure
Steps 3 7.
If the coolant still is not at the proper
level when the system cools down again,
see your dealer.
Caution
If the pressure cap is not tightly installed,
coolant loss and engine damage may
occur. Be sure the cap is properly and
tightly secured.

Engine Overheating

The vehicle has several indicators to warn of
engine overheating.
There is an engine coolant temperature
gauge on the instrument cluster. See Engine
Coolant Temperature Gauge 0 82. The
vehicle may also display a message on the
Driver Information Center (DIC).
If the decision is made not to lift the hatch
when this warning appears, get service help
right away. Contact your dealer for
additional information.
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