engine overheat PONTIAC GRAND PRIX 2008 Owner's Manual

How to Add Coolant to the Radiator
(3.8L V6 Engine)
Notice:Your engine has a specic radiator ll
procedure. Failure to follow this procedure could
cause your engine to overheat and be severely
damaged.
1. You can remove the pressure cap when the cooling
system, including the pressure cap and upper
radiator hose, is no longer hot. Turn the cap slowly
counterclockwise.
If you hear a hiss, wait for that to stop. A hiss
means there is still some pressure left.2. Then keep turning the pressure cap and remove it.{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.
3. Remove the engine cover to access the
bleed valve.
3.1. Clean the area around the engine oil ll tube
and cap before removing. Twist the oil ll
tube, with cap attached, counterclockwise
and remove it.
3.8L V6 Engine
5-34

How to Add Coolant to the Cooling
System (5.3L V8 Engine)
Notice:The engine has a specic cooling system
drain and ll procedure. Failure to follow this
procedure could cause the engine to overheat and
be severely damaged. If the engine’s cooling system
needs to be drained and re-lled, please see the
dealer/retailer.
You can remove the
pressure cap when the
cooling system, including
the pressure cap and
upper radiator hose is no
longer hot. Turn the
pressure cap slowly
counterclockwise.
1. If you hear a hiss, wait for that to stop. A hiss
means that there is still some pressure left.
2. Then keep turning the pressure cap to remove the
pressure cap.
{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.
3. Fill the cooling system with the proper DEX-COOL
®
coolant mixture, up to the base of the ller neck.
SeeEngine Coolant on page 5-24for more
information about the proper coolant mixture.
4. Rinse or wipe any spilled coolant from the engine
and the compartment.
5. Then ll the coolant recovery tank to the COLD
FILL line.
6. Install the coolant recovery tank cap and the
pressure cap.
7. If the coolant in the recovery tank is constantly low,
you should have a dealer/retailer service
department inspect your vehicle for leaks.
5-38

E
EDR .............................................................7-16
Electrical System
Add-On Equipment.....................................5-120
Fuses and Circuit Breakers.........................5-121
Headlamp Wiring.......................................5-120
Instrument Panel Fuse Block.......................5-122
Power Windows and Other Power Options....5-121
Underhood Fuse Block...............................5-124
Windshield Wiper Fuses.............................5-121
Electronic Immobilizer
PASS-Key
®III .............................................2-20
Engine
Air Cleaner/Filter.........................................5-20
Check and Service Engine Soon Light............3-50
Coolant......................................................5-24
Coolant Heater............................................2-26
Coolant Temperature Gage...........................3-49
Coolant Temperature Warning Light................3-48
Drive Belt Routing.......................................6-14
Engine Compartment Overview......................5-12
Exhaust.....................................................2-36
Oil .............................................................5-15Engine (cont.)
Oil Life System...........................................5-18
Overheated Protection Operating Mode...........5-29
Overheating................................................5-27
Starting......................................................2-25
Enhanced Traction System (ETS)........................ 4-7
Warning Light.............................................3-48
Entry Lighting.................................................3-20
Event Data Recorders.....................................7-16
Extender, Safety Belt.......................................1-28
Exterior Lamps...............................................3-16
Exterior Lighting Battery Saver..........................3-19
F
Filter
Engine Air Cleaner......................................5-20
Finish Damage.............................................5-117
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-85
Flat Tire, Changing.........................................5-96
Flat Tire, Storing...........................................5-107
5

Maintenance Schedule (cont.)
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-3
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-50
Manual Seats................................................... 1-2
Manual, Using.................................................... iii
Message
DIC Warnings and Messages........................3-67
Mirrors
Manual Rearview Mirror................................2-38
Manual Rearview Mirror with OnStar
®.............2-38
Outside Convex Mirror.................................2-39
Outside Power Mirrors..................................2-39
MP3 ............................................................3-109
MyGMLink.com................................................ 7-4
N
Navigation System, Privacy..............................7-17
New Vehicle Break-In......................................2-23
O
Odometer......................................................3-40
Off-Road Recovery..........................................4-12
Oil
Engine.......................................................5-15
Pressure Light.............................................3-52
Oil, Engine Oil Life System..............................5-18
Older Children, Restraints................................1-29
Online Owner Center........................................ 7-4
OnStar, Privacy..............................................7-17
OnStar
®System, see OnStar®Manual...............2-40
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-36
Outlets
Accessory Power.........................................3-26
Outside
Convex Mirror.............................................2-39
Power Mirrors.............................................2-39
Overhead Console Reading Lamps....................3-21
Overheated Engine Protection Operating Mode.....5-29
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
9