Coolant Surge Tank Pressure Cap; Overheated Engine Protection Operating Mode; Engine Overheating - Chevrolet Corvette 2003 Owner's Manual

Adding Coolant
If you need more coolant, add the proper DEX-COOL
coolant mixture at the surge tank, but only when the
engine is cool.
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CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
When replacing the pressure cap, make sure it is
hand-tight.

Coolant Surge Tank Pressure Cap

Notice: Your pressure cap is a pressure-type
cap and must be tightly installed to prevent coolant
loss and possible engine damage from overheating.
See "Capacities and Specifications" for more
information.
See Engine Compartment Overview on page 5-12 for
information on location.
5-26

Engine Overheating

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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 3-38
and DIC Warnings and Messages on page 3-53 .
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" in
the Index.