2010 PONTIAC G6 check engine

2. Keep turning the
pressure cap slowly
and remove it.
3. Fill the coolant surge tank with the proper mixture
to the FULL COLD mark. Wait about five minutes
and then check to see if the level is below the mark.
If the level is below the FULL COLD mark, add
additional coolant to bring the level up to the mark.
Repeat this procedure until the level remains
constant at the FULL COLD mark for at least
five minutes.4. With the coolant surge tank pressure cap off, start
the engine and let it run until you can feel the upper
radiator hose getting hot. Watch out for the engine
cooling fans.
By this time, the coolant level inside the coolant
surge tank might be lower. If the level is lower than
the FULL COLD mark, add more of the proper
mixture to the coolant surge tank until the level
reaches the FULL COLD mark.
5. Replace the pressure cap. Be sure the pressure
cap is hand-tight and fully seated.
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.
If coolant is needed, add the proper DEX-COOL
®
coolant mixture at the coolant recovery tank.
6-34

Engine Overheating
The vehicle has an indicator to warn of engine
overheating.
There is an engine coolant temperature gage on
the instrument panel cluster. SeeEngine Coolant
Temperature Gage on page 4-33.
You may decide not to lift the hood when this warning
appears, but instead get service help right away.
SeeRoadside Assistance Program on page 8-7.
If you do decide to lift the hood, make sure the vehicle
is parked on a level surface.
Then check to see if the engine cooling fans are
running. If the engine is overheating, both fans should
be running. If they are not, do not continue to run
the engine and have the vehicle serviced.
Notice:Engine damage from running the engine
without coolant is not covered by the warranty.
Notice:If the engine catches re while driving
with no coolant, the vehicle can be badly damaged.
The costly repairs would not be covered by the
vehicle warranty. SeeOverheated Engine Protection
Operating Mode on page 6-37for information on
driving to a safe place in an emergency.
If Steam Is Coming From The Engine
Compartment
{WARNING:
Steam from an overheated engine can burn you
badly, even if you just open the hood. Stay away
from the engine if you see or hear steam coming
from it. Turn it off and get everyone away from the
vehicle until it cools down. Wait until there is no sign
of steam or coolant before you open the hood.
If you keep driving when the vehicles engine is
overheated, the liquids in it can catch fire. You or
others could be badly burned. Stop the engine if
it overheats, and get out of the vehicle until the
engine is cool.
SeeOverheated Engine Protection Operating Mode
on page 6-37for information on driving to a safe
place in an emergency.
6-35

Overheated Engine Protection
Operating Mode
This emergency operating mode lets the vehicle
be driven to a safe place in an emergency situation.
If an overheated engine condition exists, an overheat
protection mode which alternates firing groups of
cylinders helps prevent engine damage. In this mode,
there is a significant loss in power and engine
performance. The temperature gage indicates an
overheat condition exists. Driving extended distances
and/or towing a trailer in the overheat protection mode
should be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine damage,
allow the engine to cool before attempting any
repair. The engine oil will be severely degraded.
Repair the cause of coolant loss, change the oil
and reset the oil life system. SeeEngine Oil
on page 6-21.
Power Steering Fluid
SeeEngine Compartment
Overview on page 6-16for
reservoir location.
When to Check Power Steering Fluid
Power steering fluid is used in all vehicles with
V6 engines. Vehicles with the 4-cylinder engine
have electric power steering and do not use power
steering fluid.
It is not necessary to regularly check power steering
fluid unless a leak is suspected in the system or
an unusual noise is heard. A fluid loss in this system
could indicate a problem. Have the system inspected
and repaired.
6-37

How to Check Power Steering Fluid
To check the power steering fluid:
1. Turn the key off and let the engine compartment
cool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a
clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the fluid level on
the dipstick
The fluid level should be within the crosshatched area
on the dipstick.
If the fluid is at or below the ADD mark on the dipstick,
add just enough fluid to bring the level within the
crosshatched area.
What to Use
To determine what kind of fluid to use, see
Recommended Fluids and Lubricants on page 7-10.
Always use the proper fluid. Failure to use the proper
fluid can cause leaks and damage hoses and seals.
Windshield Washer Fluid
What to Use
When the vehicle needs windshield washer fluid, be
sure to read the manufacturer’s instructions before use.
If the vehicle will be operating in an area where the
temperature may fall below freezing, use a fluid that
has sufficient protection against freezing.
Adding Washer Fluid
When the windshield washer fluid reservoir is low, a
LOW WASHER FLUID message displays on the Driver
Information Center (DIC). SeeDIC Warnings and
Messages on page 4-42for more information.
Open the cap with the
washer symbol on it.
Add washer fluid until
the reservoir is full.
SeeEngine Compartment Overview on page 6-16for
reservoir location.
6-38

5. Check that the jumper cables do not have loose
or missing insulation. If they do, you could get a
shock. The vehicles could be damaged too.
Before you connect the cables, here are some things
you should know. Positive (+) will go to positive (+) or
to a remote positive (+) terminal if the vehicle has
one. Negative (−) will go to a heavy, unpainted metal
engine part or to a remote negative (−) terminal if the
vehicle has one.
Do not connect positive (+) to negative (−) or you will
get a short that would damage the battery and maybe
other parts too. And do not connect the negative (−)
cable to the negative (−) terminal on the dead battery
because this can cause sparks.
{WARNING:
Fans or other moving engine parts can injure you
badly. Keep your hands away from moving parts
once the engine is running.6. Connect the red positive (+) cable to the positive (+)
terminal of the dead battery.
7. Do not let the other end touch metal. Connect it to
the positive (+) terminal of the good battery. Use a
remote positive (+) terminal if the vehicle has one.
6-45

ApplicationCapacities
Metric English
Cooling System
2.4L L4 Engine 7.1 L 7.5 qt
3.5L, 3.6L, 3.9L V6 Engines 9.2 L 9.7 qt
Engine Oil with Filter
2.4L L4 Engine 4.7 L 5.0 qt
3.5L and 3.9L V6 Engines 3.8 L 4.0 qt
3.6L V6 Engine 5.2 L 5.5 qt
Fuel Tank 61.7 L 16.3 gal
Wheel Nut Torque 140Y100 lb ft
*Transmission fluid capacity is approximate. SeeAutomatic Transmission Fluid (2.4L L4, 3.5L V6 and
3.6L V6 Engines) on page 6-27orAutomatic Transmission Fluid (3.9L V6 Engine) on page 6-28for
information on checking fluid level.
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual.
6-126

Maintenance Schedule......................................7-2
Introduction...................................................7-2
Scheduled Maintenance...................................7-3
Owner Checks and Services............................7-8Recommended Fluids and Lubricants...............7-10
Maintenance Replacement Parts.....................7-11
Engine Drive Belt Routing..............................7-12
Maintenance Record.....................................7-14
Section 7 Maintenance Schedule
7-1

Rotation of New Tires
To maintain ride, handling, and performance of the
vehicle, it is important that the first rotation service
for new tires be performed when they have
8 000 to 13 000 km (5,000 to 8,000 miles).
SeeTire Inspection and Rotation on page 6-73.
Scheduled Maintenance
When the Change Oil Soon Message
Displays
Change engine oil and filter. SeeEngine Oil on
page 6-21.An Emission Control Service.
When the Change Oil Soon message displays, service
is required for the vehicle as soon as possible, within
the next 1 000 km/600 miles. If driving under the
best conditions, the engine oil life system might not
indicate the need for vehicle service for more than a
year. The engine oil and filter must be changed at
least once a year and the oil life system must be reset.
Your dealer/retailer has trained service technicians
who will perform this work and reset the system. If the
engine oil life system is reset accidentally, service
the vehicle within 5 000 km/3,000 miles since the last
service. Reset the oil life system whenever the oil
is changed. SeeEngine Oil Life System on page 6-24.When the Change Oil Soon message displays, certain
services, checks, and inspections are required. The
services described for MaintenanceIshould be
performed at every engine oil change. The services
described for MaintenanceIIshould be performed when:
•MaintenanceIwas performed the last time the
engine oil was changed.
•It has been 10 months or more since the Change
Oil Soon message has displayed or since the last
service.
MaintenanceI
•Change engine oil and filter. SeeEngine Oil on
page 6-21.An Emission Control Service.
•Engine coolant level check. SeeEngine Coolant on
page 6-31.
•Windshield washer fluid level check. SeeWindshield
Washer Fluid on page 6-38.
•Tire inflation check. SeeInation - Tire Pressure on
page 6-64.
•Tire wear inspection. SeeTire Inspection and
Rotation on page 6-73.
•Rotate tires. SeeTire Inspection and Rotation on
page 6-73.
7-3