2010 PONTIAC G6 heater

What to Use
{WARNING:
Adding only plain water to the cooling system can
be dangerous. Plain water, or some other liquid
such as alcohol, can boil before the proper coolant
mixture will. The vehicle’s coolant warning system
is set for the proper coolant mixture. With plain
water or the wrong mixture, the engine could get
too hot but you would not get the overheat
warning. The engine could catch fire and you or
others could be burned. Use a 50/50 mixture of
clean, drinkable water and DEX-COOL
®coolant.
Use a 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant. If using this mixture, nothing
else needs to be added. This mixture:
•Gives freezing protection down to−37°C (−34°F),
outside temperature.
•Gives boiling protection up to 129°C (265°F),
engine temperature.
•Protects against rust and corrosion.
•Will not damage aluminum parts.
•Helps keep the proper engine temperature.Notice:If an improper coolant mixture is used,
the engine could overheat and be badly damaged.
The repair cost would not be covered by the vehicle
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core, and
other parts.
Notice:If extra inhibitors and/or additives are used
in the vehicle’s cooling system, the vehicle could
be damaged. Use only the proper mixture of
the engine coolant listed in this manual for the
cooling system. SeeRecommended Fluids and
Lubricants on page 7-10for more information.
Checking Coolant
The vehicle must be on a level surface when checking
the coolant level.
Check to see if coolant is visible in the coolant recovery
tank. If the coolant inside the coolant recovery tank
is boiling, do not do anything else until it cools down.
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
recovery tank, but be sure the cooling system is cool
before this is done. See Engine Coolant for more
information.
The coolant level should be at or above the FULL COLD
mark on the coolant surge tank. If it is not, you may have
a leak in the cooling system.
6-32

If No Steam Is Coming From The
Engine Compartment
If an engine overheat warning is displayed but no steam
can be seen or heard, the problem may not be too
serious. Sometimes the engine can get a little too hot
when the vehicle:
•Climbs a long hill on a hot day.
•Stops after high-speed driving.
•Idles for long periods in traffic.
•Tows a trailer.
If the overheat warning is displayed with no sign of
steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and
to the highest fan speed. Open the windows as
necessary.
3. In heavy traffic, let the engine idle in N (Neutral)
while stopped. If it is safe to do so, pull off the
road, shift to P (Park) or N (Neutral) and let
the engine idle.If the temperature overheat gage is no longer in the
overheat zone or an overheat warning no longer
displays, the vehicle can be driven. Continue to drive
the vehicle slow for about 10 minutes. Keep a safe
vehicle distance from the car in front of you. If the
warning does not come back on, continue to drive
normally.
If the warning continues, pull over, stop, and park the
vehicle right away.
If there is no sign of steam, idle the engine for
three minutes while parked. If the warning is still
displayed, turn off the engine until it cools down.
Also, see “Overheated Engine Protection Operating
Mode” next in this section.
6-36

Electrical System (cont.)
Electronic Immobilizer
PASS-Key
®III+...........................................3-18
Electronic Immobilizer Operation
PASS-Key
®III+...........................................3-18
Electronic Stability Control................................. 5-5
Electronic Stability Control Indicator/Warning
OFF Light...................................................4-32
Emergency Trunk Release Handle.....................3-12
Emissions Inspection and Maintenance
Programs...................................................4-36
Ending a Call.................................................4-79
Engine
Air Cleaner/Filter.........................................6-26
Check and Service Engine Soon Lamp...........4-34
Compartment Overview................................6-16
Coolant......................................................6-31
Coolant Heater............................................3-23
Coolant Temperature Gage...........................4-33
Coolant Temperature Warning Light................4-33
Cooling System...........................................6-30
Drive Belt Routing.......................................7-12
Exhaust.....................................................3-32
Oil .............................................................6-21
Overheated Protection Operating Mode...........6-37
Overheating................................................6-35
Starting......................................................3-21Engine (cont.)
Engine Cooling When Trailer Towing..................5-33
Engine Identification......................................6-114
Engine Oil
Life System................................................6-24
Engine Oil Additives / Engine Oil Flushes...........6-24
Entering Personalization Menu..........................4-48
Entry/Exit Lighting...........................................4-13
Event Data Recorders.....................................8-17
Exiting Personalization Menu............................4-52
Express-Down Window....................................3-15
Extender, Safety Belt.......................................2-35
Exterior Mirrors...............................................1-10
F
Federal Communications Commission (FCC)
and Industry and Science Canada.................6-67
Filter
Engine Air Cleaner......................................6-26
Finding a Category (CAT) Station (XM Satellite
Radio Service Only).....................................4-58
Finding a Station............................................4-55
Finish Damage.............................................6-113
Fixed Mast Antenna........................................4-84
Flashers, Hazard Warning.................................. 4-3
6

H
Halogen Bulbs................................................6-47
Hazard Warning Flashers................................... 4-3
Head Restraints............................................... 2-2
Headlamps....................................................4-10
Aiming .......................................................6-47
Bulb Replacement.......................................6-47
Daytime Running Lamps (DRL).....................4-11
Delayed.....................................................4-11
Flash-to-Pass............................................... 4-5
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................6-48
High/Low Beam Changer................................ 4-5
On Reminder..............................................4-10
Headlamps Off in Park....................................4-11
Heated Seats................................................... 2-6
Heater...........................................................4-16
Engine Coolant...........................................3-23
Highbeam On Light.........................................4-38
High-Speed Operation, Tires.............................6-66
Highway Hypnosis...........................................5-13
Hill and Mountain Roads..................................5-14
Hitches..........................................................5-30
Hood
Checking Things Under................................6-14
Release.....................................................6-15Horn ............................................................... 4-3
How OnStar Service Works..............................1-22
How the System Alarm is Activated...................3-17
How to Add Automatic Transmission Fluid..........6-30
How to Add Coolant to the Coolant
Surge Tank.................................................6-33
How to Check................................................6-65
How to Check Automatic Transmission Fluid.......6-28
How to Check Power Steering Fluid..................6-38
How to Detect a Tamper Condition....................3-18
How to Inspect the Engine Air Cleaner/Filter.......6-26
How to Reset the Engine Oil Life System...........6-25
How to Turn Off the System Alarm....................3-17
How to Wear Safety Belts Properly
...................2-20
Hydraulic Power Steering................................... 5-8
Hydroplaning..................................................5-12
I
If a Crash Occurs...........................................8-13
If No Steam Is Coming From The Engine
Compartment..............................................6-36
If Steam Is Coming From The Engine
Compartment..............................................6-35
If the Off Indicator is Lit for an Adult-Size
Occupant...................................................2-70
8

Tire and Loading Information Label....................5-19
Tire Sealant...................................................6-84
Tires.............................................................6-56
Aluminum Wheels, Cleaning........................6-112
Buying New Tires........................................6-75
Chains.......................................................6-81
Changing a Flat Tire....................................6-90
Cleaning...................................................6-113
Compact Spare.........................................6-106
Different Size..............................................6-77
High-Speed Operation..................................6-66
If a Tire Goes Flat.......................................6-81
Inflation - Tire Pressure................................6-64
Inspection and Rotation................................6-73
Installing the Spare Tire................................6-93
Pressure Light.............................................4-33
Pressure Monitor Operation...........................6-67
Pressure Monitor System..............................6-66
Removing the Flat Tire.................................6-93
Removing the Spare Tire and Tools...............6-91
Sealant and Compressor Kit.................6-82, 6-89
Sidewall Labeling.........................................6-58
Storing a Flat or Spare Tire and Tools............6-99
Terminology and Definitions...........................6-61
Uniform Tire Quality Grading.........................6-78
Wheel Alignment and Tire Balance.................6-79
Wheel Replacement.....................................6-79
When It Is Time for New Tires......................6-74
Winter........................................................6-57To Use the Engine Coolant Heater....................3-23
Torque Lock...................................................3-31
Total Weight on the Vehicle’s Tires....................5-30
Towing
Recreational Vehicle.....................................5-23
Towing a Trailer
..........................................5-27
Your Vehicle...............................................5-23
TPMS Malfunction Light and Message...............6-69
TPMS Matching Process for Vehicles with
Remote Keyless Entry (RKE)........................6-70
TPMS Matching Process for Vehicles without
Remote Keyless Entry (RKE)........................6-71
TPMS Sensor Matching Process.......................6-70
Traction
Control System (TCS).................................... 5-6
Off Light.....................................................4-32
Traction – AA, A, B, C.....................................6-78
Trailer Brakes.................................................5-30
Transferring a Call..........................................4-79
Transmission
Fluid, Automatic..................................6-27, 6-28
Transmission Operation, Automatic....................3-24
Transportation Options.....................................8-10
Transportation Program, Courtesy......................8-10
Treadwear.....................................................6-78
Treadwear 200 Traction AA Temperature A.........6-78
Trip Odometer................................................4-26
Trunk............................................................3-11
Trunk Lamps..................................................4-14
16