2004 CHEVROLET CORVETTE engine overheat

The coolant level should be at or above the FULL COLD
mark. If it is not, you may have a leak at the pressure cap
or in the radiator hoses, heater hoses, radiator, water
pump or somewhere else in the cooling system.
{CAUTION:
Heater and radiator hoses, and other engine
parts, can be very hot. Do not touch them. If
you do, you can be burned.
CAUTION: (Continued)
CAUTION: (Continued)
Do not run the engine if there is a leak. If you
run the engine, it could lose all coolant. That
could cause an engine re, and you could be
burned. Get any leak xed before you drive the
vehicle.
If there seems to be no leak, with the engine on, check
to see if the electric engine cooling fans are running.
If the engine is overheating, both fans should be
running. If they are not, your vehicle needs service.
Notice:Engine damage from running your engine
without coolant is not covered by your warranty. See
“Overheated Engine Protection Operating Mode”
in the Index for information on driving to a safe
place in an emergency.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-30

{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.Notice:In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mixture.
{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. Do not spill coolant on a hot engine.
5-32

Electrical System (cont.)
Windshield Wiper Fuses...............................5-92
Emergency Trunk Release Handle
(Convertible Only)........................................2-13
Emissions Inspection and
Maintenance Programs.................................3-44
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-40
Check and Service Engine Soon Light............3-41
Coolant......................................................5-23
Coolant Heater............................................2-23
Coolant Temperature Gage...........................3-41
Drive Belt Routing.......................................6-14
Engine Compartment Overview......................5-12
Exhaust.....................................................2-36
Oil .............................................................5-13
Oil Pressure Gage.......................................3-44
Overheating................................................5-26
Starting......................................................2-21
Engine Compartment Fuse Block......................5-96
Engine Oil Additives........................................5-16
Event Data Recorders (EDR)............................. 7-9
Exit/Entry Lighting...........................................3-17
Express-Down Window....................................2-15
Extended Mobility Tires....................................5-61
Extender, Safety Belt.......................................1-19
Exterior Lamps...............................................3-13F
Filter
Engine Air Cleaner......................................5-18
Finding a Station....................................3-71, 3-77
Finish Care....................................................5-86
Finish Damage...............................................5-89
Fixed Mast Antenna........................................3-89
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-75
Floor Mats.....................................................2-41
Fluid
Automatic Transmission................................5-20
Manual Transmission....................................5-21
Power Steering...........................................5-35
Windshield Washer......................................5-36
FM ...............................................................3-88
Fog Lamps....................................................3-15
Front Air Dam................................................2-19
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-46
Gasoline Octane........................................... 5-5
Gasoline Specifications.................................. 5-5
5

Mirrors (cont.)
Outside Power Heated Mirrors.......................2-38
Model Reference................................................ vi
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-19
Normal Maintenance Replacement Parts............6-13
O
Odometer......................................................3-34
Off-Road Recovery..........................................4-16
Oil
Engine.......................................................5-13
Engine Oil Pressure Gage............................3-44
Older Children, Restraints................................1-19
One to Four Shift Light (Manual Transmission)....2-30
Online Owner Center........................................ 7-3
Operating the Trunk-Mounted CD Changer
with the Radio with Cassette.........................3-83
Operating the Trunk-Mounted CD Changer
with the Radio with CD................................3-84
Other Warning Devices...................................... 3-5
Outlet Adjustment............................................3-31
Outside
Automatic Dimming Mirror.............................2-39
Convex Mirror.............................................2-39Outside (cont.)
Power Heated Mirrors..................................2-38
Overheated Engine Protection Operating Mode . . . 5-26
Overseas – Customer Assistance........................ 7-5
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
Owner’s Information........................................7-12
P
Park (P)
Shifting Into................................................2-32
Shifting Out of............................................2-34
Parking
Brake........................................................2-31
Over Things That Burn.................................2-35
Parking Your Vehicle.......................................2-35
Passenger Position, Safety Belts.......................1-19
Passing.........................................................4-16
PASS-Key
®....................................................2-18
Plan Ahead When Possible................................ 7-7
Playing a Cassette Tape..................................3-73
Playing a CD.................................................3-79
Playing the Radio...................................3-70, 3-76
Power
Accessory Outlets........................................3-22
Antenna Mast Care......................................3-90
Door Locks.................................................2-10
Electrical System.........................................5-92
9