2004 CHEVROLET VENTURE engine overheat

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.
How to Add Coolant to the Coolant
Recovery Tank
If you have not found a problem yet, but the coolant
level is not at or above the FULL COLD mark, add
a 50/50 mixture ofclean, drinkable waterand
DEX-COOL
®engine coolant at the coolant recovery
tank. SeeEngine Coolant on page 5-22for more
information.
{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.
5-30

If the overheat warning continues, there’s one more
thing you can try. You can add the proper coolant
mixture directly to the radiator, but be sure the cooling
system is cool before you do it.
{CAUTION:
Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They
are under pressure, and if you turn the radiator
pressure cap — even a little — they can come
out at high speed. Never turn the cap when the
cooling system, including the radiator pressure
cap, is hot. Wait for the cooling system and
radiator pressure cap to cool if you ever have
to turn the pressure cap.
How to Add Coolant to the Radiator
Notice:Your engine has a specic radiator
ll procedure. Failure to follow this procedure could
cause your engine to overheat and be severely
damaged.
5-32

E
Electrical System
Add-On Equipment.....................................5-105
Fuses and Circuit Breakers.........................5-106
Headlamp Wiring.......................................5-105
Power Windows and Other Power Options....5-106
Windshield Wiper Fuses.............................5-106
Emissions Inspection and Maintenance
Programs...................................................3-48
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-42
Change Oil Message...................................3-54
Check and Service Engine Soon Light............3-45
Coolant......................................................5-22
Coolant Heater............................................2-34
Coolant Temperature Gage...........................3-44
Coolant Temperature Warning Message..........3-52
Drive Belt Routing.......................................6-15
Engine Compartment Overview......................5-12
Exhaust.....................................................2-43
Oil .............................................................5-13
Overheating................................................5-25
Starting......................................................2-33Engine Oil Additives........................................5-16
Engine Specications.....................................5-114
Entering Programming Mode............................2-62
Entertainment System....................................3-108
Entry Lighting.................................................3-18
Erasing HomeLink
®Buttons..............................2-51
Event Data Recorders (EDR)............................7-10
Exit Lighting...................................................3-19
Exiting Programming Mode...............................2-71
Express-Down Window....................................2-25
Extender, Safety Belt.......................................1-52
Exterior Lamps...............................................3-16
F
Filter
Engine Air Cleaner......................................5-18
Finding a Program Type (PTY) Station
(RDS and XM™).........................3-69, 3-81, 3-97
Finding a Station....................3-62, 3-67, 3-79, 3-95
Finish Care..................................................5-101
Finish Damage.............................................5-102
Fixed Mast Antenna.......................................3-122
Flash-to-Pass................................................... 3-9
6

N
New Vehicle Break-In......................................2-31
Normal Maintenance Replacement Parts............6-14
O
Odometer......................................................3-39
Off-Road Recovery..........................................4-14
Oil
Engine.......................................................5-13
Pressure Message.......................................3-53
Older Children, Restraints................................1-53
Online Owner Center........................................ 7-4
OnStar
®Personal Calling.................................2-48
OnStar®Services............................................2-47
OnStar®System.............................................2-47
OnStar®Virtual Advisor....................................2-48
Operation......................................................3-26
Operation Tips................................................3-29
Other Warning Devices...................................... 3-7
Outlet Adjustment............................................3-29
Outside
Convex Mirror.............................................2-46
Heated Mirrors............................................2-46
Power Mirrors.............................................2-45Overhead Console..........................................2-54
Overhead Console Switchbank..........................3-22
Overheated Engine Protection Operating Mode . . . 5-26
Overseas – Customer Assistance........................ 7-5
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
Owner’s Information........................................7-13
P
Park Aid........................................................3-22
Park (P)
Shifting Into................................................2-40
Shifting Out of............................................2-42
Parking
Assist........................................................3-22
Brake........................................................2-39
Over Things That Burn.................................2-43
Parking on Hills..............................................4-47
Passenger Compartment Air Filter.....................3-34
Passing.................................................4-14, 4-46
PASS-Key
®III ................................................2-29
PASS-Key®III Operation..................................2-29
PASS-Key®III Security Message.......................3-56
Plan Ahead When Possible................................ 7-8
Playing a CD...............................3-74, 3-86, 3-103
11