2004 PONTIAC BONNEVILLE engine overheat

How to Add Coolant to the Coolant
Recovery Tank
If you have not found a problem yet, but the coolant
level is not at the FULL COLD mark, add a
50/50 mixture ofclean, drinkable waterand DEX-COOL
®
engine coolant at the coolant recovery tank. See
Engine Coolant on page 5-26for 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.
CAUTION: (Continued)
CAUTION: (Continued)
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.
5-33

{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.When the coolant in the coolant recovery tank is at the
FULL COLD mark, start your vehicle.
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.
5-34

Driving Through Deep Standing Water...............4-20
Driving Through Flowing Water.........................4-20
Driving with a Trailer.......................................4-43
E
Electrical System
Add-On Equipment.....................................5-100
Fuses and Circuit Breakers.........................5-101
Headlamp Wiring.......................................5-100
Power Windows and Other Power Options.......5-100
Removing the Rear Seat Cushion................5-104
Windshield Wiper Fuses.............................5-100
Electronic Compass.........................................3-70
Emergency Trunk Release Handle.....................2-18
Emissions Inspection and Maintenance
Programs...................................................3-51
Engine
Air Cleaner/Filter.........................................5-21
Battery.......................................................5-45
Check and Service Engine Soon Light............3-48
Coolant......................................................5-26
Coolant Heater............................................2-28
Coolant Temperature Gage...........................3-47
Cooling System Inspection............................6-24
Drive Belt Routing......................................5-111
Engine Compartment Overview......................5-14
Exhaust.....................................................2-37Engine (cont.)
Oil .............................................................5-16
Overheating................................................5-29
Starting......................................................2-27
Engine Compartment Fuse Block.....................5-101
Engine Coolant Level Check.............................6-19
Engine Cooling When Trailer Towing..................4-45
Engine Oil Additives........................................5-19
Engine Oil Level Check...................................6-19
Entry Lighting.................................................3-18
Erasing HomeLink
®Buttons..............................2-47
Event Data Recorders (EDR)............................7-10
Express-Down Window....................................2-20
Extender, Safety Belt.......................................1-29
Exterior Lamps...............................................3-14
Exterior Lighting Battery Saver..........................3-17
F
Filter
Engine Air Cleaner......................................5-21
Finding a Program Type (PTY) Station
(RDS and XM™).................................3-78, 3-90
Finding a Station....................................3-75, 3-88
Finish Care....................................................5-95
Finish Damage...............................................5-96
Flash-To-Pass.................................................. 3-9
5