2006 PONTIAC G6 engine overheat

How to Add Coolant to the Coolant
Surge Tank
Notice:This vehicle has a specic coolant ll
procedure. Failure to follow this procedure could
cause your engine to overheat and be severely
damaged.
If you have not found a problem yet, check to see if
coolant is visible in the surge tank. If coolant is visible
but the coolant level is not at or above the FULL COLD
mark, add a 50/50 mixture of clean, drinkable water
and DEX-COOL
®coolant at the coolant surge tank,
but be sure the cooling system, including the coolant
surge tank pressure cap, is cool before you do it.
SeeEngine Coolant on page 5-27for more information.If no coolant is visible in the surge tank, add coolant as
follows:
{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 coolant
surge tank pressure cap — even a little — they
can come out at high speed. Never turn the
cap when the cooling system, including the
coolant surge tank pressure cap, is hot. Wait
for the cooling system and coolant surge tank
pressure cap to cool if you ever have to turn
the pressure cap.
5-34

{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.
1. You can remove the coolant surge tank pressure
cap when the cooling system, including the coolant
surge tank pressure cap and upper radiator
hose, is no longer hot. Turn the pressure cap
slowly counterclockwise about two or two and
one-half turns.
If you hear a hiss, wait for that to stop. This will
allow any pressure still left to be vented out
the discharge hose.
5-35

Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your vehicle
unless you check with your dealer rst. Some
electrical equipment can damage your vehicle and
the damage wouldn’t be covered by your warranty.
Some add-on electrical equipment can keep other
components from working as they should.
Your vehicle has an airbag system. Before attempting to
add anything electrical to your vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-70.
Windshield Wiper Fuses
The windshield wiper motor is protected by an internal
circuit breaker and a fuse. If the motor overheats due to
heavy snow, etc., the wiper will stop until the motor
cools. If the overload is caused by some electrical
problem, have it xed.
Power Windows and Other Power
Options
Fuses in the fuse block protect the power windows.
When the current load is too heavy, the fuse opens
protecting the circuit until the problem is xed.
Fuses
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and fusible links. This greatly reduces the chance of
damage caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure to
replace a bad fuse with a new one of the identical
size and rating.
There are three fuse blocks in your vehicle: one in the
center of the instrument panel, one in the engine
compartment and one in the trunk.
There is a fuse puller located on the instrument panel
fuse block. It can be used to easily remove fuses
from the fuse block.
5-97

E
Easy Entry Seat............................................... 1-6
Electrical System
Add-On Equipment......................................5-97
Engine Compartment Fuse Block.................5-100
Fuses........................................................5-97
Instrument Panel Fuse Block.........................5-98
Power Windows and Other Power Options......5-97
Rear Compartment Fuse Block....................5-102
Windshield Wiper Fuses...............................5-97
Engine
Air Cleaner/Filter.........................................5-22
Battery.......................................................5-42
Check and Service Engine Soon Light............3-40
Coolant......................................................5-27
Coolant Heater............................................2-27
Coolant Temperature Gage...........................3-40
Engine Compartment Overview......................5-12
Exhaust.....................................................2-37
Oil .............................................................5-17
Oil Life System...........................................5-20
Overheated Protection Operating Mode...........5-32
Overheating................................................5-30
Starting......................................................2-24Enhanced Traction System (ETS)......................4-11
Active Light................................................3-39
Warning Light.............................................3-38
Entry/Exit Lighting...........................................3-18
Event Data Recorders (EDR)............................. 7-9
Extender, Safety Belt.......................................1-29
F
Filter
Engine Air Cleaner......................................5-22
Finish Damage...............................................5-94
Fixed Mast Antenna........................................3-88
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-74
Flat Tire, Changing.........................................5-74
Flat Tire, Storing.............................................5-83
Fluid
Automatic Transaxle.............................5-23, 5-24
Manual Transaxle........................................5-26
Power Steering...........................................5-37
Windshield Washer......................................5-38
Fog Lamps....................................................3-17
5

Mirrors
Automatic Dimming Rearview
with Compass..........................................2-41
Automatic Dimming Rearview with OnStar
®
and Compass..........................................2-39
Manual Rearview Mirror................................2-39
Manual Rearview Mirror with OnStar
®.............2-39
Outside Convex Mirror.................................2-43
Outside Power Mirrors..................................2-43
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-22
Normal Maintenance Replacement Parts............6-13
O
Odometer......................................................3-31
Odometer, Trip...............................................3-31
Off-Road Recovery..........................................4-15
Oil
Engine.......................................................5-17
Pressure Light.............................................3-43
Oil, Engine Oil Life System..............................5-20
Older Children, Restraints................................1-30
Online Owner Center........................................ 7-3OnStar
®System, see OnStar®Manual...............2-44
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-28
Outside
Convex Mirror.............................................2-43
Power Mirrors.............................................2-43
Overhead Console Reading Lamps....................3-18
Overheated Engine Protection
Operating Mode..........................................5-32
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Park (P)
Shifting Into................................................2-34
Shifting Out of............................................2-36
Park (P) Headlamps Off in Park (P)..................3-14
Parking
Brake........................................................2-33
Over Things That Burn.................................2-37
Parking Your Vehicle.......................................2-36
Passenger Airbag Status Indicator.....................3-34
Passenger Sensing System..............................1-65
Passing.........................................................4-16
PASS-Key
®III+..............................................2-20
PASS-Key®III+ Operation................................2-21
9