2010 PONTIAC G6 transmission

Turn Signals When Towing a Trailer
The arrows on the instrument panel flash whenever
signaling a turn or lane change. Properly hooked up, the
trailer lamps also flash, telling other drivers the vehicle
is turning, changing lanes or stopping.
When towing a trailer, the arrows on the instrument panel
flash for turns even if the bulbs on the trailer are burned
out. For this reason you may think other drivers are
seeing the signal when they are not. It is important to
check occasionally to be sure the trailer bulbs are still
working.
Driving on Grades
Notice:Do not tow on steep continuous grades
exceeding 6 miles (9.6 km). Extended, higher than
normal engine and transmission temperatures may
result and damage the vehicle. Frequent stops are
very important to allow the engine and transmission
to cool.Reduce speed and shift to a lower gearbeforestarting
down a long or steep downgrade. If the transmission is
not shifted down, the brakes might have to be used so
much that they would get hot and no longer work well.
On a long uphill grade, shift down and reduce the
vehicle’s speed to around 45 mph (70 km/h) to reduce
the possibility of the engine and the transmission
overheating. If the engine does overheat, seeEngine
Overheating on page 6-35.
Parking on Hills
{WARNING:
Parking the vehicle on a hill with the trailer
attached can be dangerous. If something goes
wrong, the rig could start to move. People can be
injured, and both the vehicle and the trailer can be
damaged. When possible, always park the rig on a
flat surface.
5-32

If parking the rig on a hill:
1. Press the brake pedal, but do not shift into P (Park)
yet. Turn the wheels into the curb if facing downhill
or into traffic if facing uphill.
2. Have someone place chocks under the trailer
wheels.
3. When the wheel chocks are in place, release the
brake pedal until the chocks absorb the load.
4. Reapply the brake pedal. Then apply the parking
brake and shift the transmission into P (Park).
5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal while you:
•start the engine,
•shift into a gear, and
•release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the
chocks.
Maintenance When Trailer Towing
The vehicle needs service more often when pulling a
trailer. SeeScheduled Maintenance on page 7-3for more
information. Things that are especially important in trailer
operation are automatic transmission fluid, engine oil,
belts, cooling system and brake system. It is a good idea
to inspect these before and during the trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When Trailer Towing
The cooling system may temporarily overheat during
severe operating conditions. SeeEngine Overheating
on page 6-35.
Changing a Tire When Trailer Towing
If the vehicle gets a flat tire while towing a trailer,
be sure to secure the trailer and disconnect it from
the vehicle before changing the tire.
5-33

Service............................................................6-4
Accessories and Modifications..........................6-4
California Proposition 65 Warning.....................6-5
California Perchlorate Materials Requirements.....6-5
Doing Your Own Service Work.........................6-5
Adding Equipment to the Outside of the
Vehicle......................................................6-6
Fuel................................................................6-6
Gasoline Octane............................................6-7
Gasoline Specifications....................................6-7
California Fuel...............................................6-7
Additives.......................................................6-8
Fuel E85 (85% Ethanol)..................................6-9
Fuels in Foreign Countries.............................6-11
Filling the Tank............................................6-11
Filling a Portable Fuel Container.....................6-13
Checking Things Under the Hood....................6-14
Hood Release..............................................6-15
Engine Compartment Overview.......................6-16
Engine Oil...................................................6-21
Engine Oil Life System..................................6-24Engine Air Cleaner/Filter................................6-26
Automatic Transmission Fluid
(2.4L L4, 3.5L V6 and 3.6L V6 Engines)..........6-27
Automatic Transmission Fluid
(3.9L V6 Engine).......................................6-28
Cooling System............................................6-30
Engine Coolant.............................................6-31
Engine Overheating.......................................6-35
Overheated Engine Protection
Operating Mode........................................6-37
Power Steering Fluid.....................................6-37
Windshield Washer Fluid................................6-38
Brakes........................................................6-39
Battery........................................................6-42
Jump Starting...............................................6-43
Headlamp Aiming
...........................................6-47
Bulb Replacement..........................................6-47
Halogen Bulbs..............................................6-47
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps....................................6-48
Center High-Mounted
Stoplamp (CHMSL) (Sedan)........................6-49
Section 6 Service and Appearance Care
6-1

A.Engine Air Cleaner/Filter on page 6-26.
B.Power Steering Fluid on page 6-37.
C. Engine Cooling Fan. SeeCooling System on
page 6-30.
D. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 6-21.
E. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 6-21.
F. Engine Coolant Surge Tank. SeeEngine Coolant on
page 6-31.
G. Pressure Cap. SeeCooling System on page 6-30.
H. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 6-39.I. Automatic Transmission Fluid Cap/Dipstick
(Out of View). SeeAutomatic Transmission Fluid
(2.4L L4, 3.5L V6 and 3.6L V6 Engines) on page 6-27
orAutomatic Transmission Fluid (3.9L V6 Engine) on
page 6-28.
J.Battery on page 6-42.
K. SeeEngine Compartment Fuse Block on
page 6-119.
L. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 6-38.
6-19

A.Engine Air Cleaner/Filter on page 6-26.
B.Power Steering Fluid on page 6-37.
C. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 6-21.
D. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 6-21.
E. Electric Engine Cooling Fans (Out of View).
SeeCooling System on page 6-30.
F. Engine Coolant Surge Tank. SeeEngine Coolant on
page 6-31.
G. Pressure Cap. SeeCooling System on page 6-30.
H. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 6-39.
I. Automatic Transmission Fluid Cap/Dipstick
(Out of View). See “Checking the Fluid Level”
underAutomatic 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 6-28.
J.Battery on page 6-42.
K. Underhood Fuse Block. SeeEngine Compartment
Fuse Block on page 6-119.
L. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 6-38.Engine Oil
Checking Engine Oil
It is a good idea to check the engine oil level at each
fuel fill. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
The engine oil dipstick handle is a yellow loop.
SeeEngine Compartment Overview on page 6-16
for the location of the engine oil dipstick.
1. Turn off the engine and give the oil several minutes
to drain back into the oil pan. If this is not done,
the oil dipstick might not show the actual level.
2. Pull the dipstick and clean it with a paper towel or
cloth, then push it back in all the way. Remove it
again, keeping the tip down and check the level.
6-21

{WARNING:
Operating the engine with the air cleaner/filter off
can cause you or others to be burned. The air
cleaner not only cleans the air; it helps to stop
flames if the engine backfires. If it is not there and
the engine backfires, you could be burned. Do not
drive with it off, and be careful working on the
engine with the air cleaner/filter off.
Notice:If the air cleaner/lter is off, a backre
can cause a damaging engine re. And, dirt can
easily get into the engine, which will damage it.
Always have the air cleaner/lter in place when you
are driving.
Automatic Transmission Fluid
(2.4L L4, 3.5L V6 and
3.6L V6 Engines)
It is not necessary to check the transmission fluid level.
A transmission fluid leak is the only reason for fluid loss.
If a leak occurs, take your vehicle to the dealer/retailer
and have it repaired as soon as possible.
Change the fluid and filter at the intervals listed in
Scheduled Maintenance on page 7-3and be sure to
use the transmission fluid listed inRecommended Fluids
and Lubricants on page 7-10.
Notice:Use of the incorrect automatic transmission
uid may damage the vehicle, and the damages
may not be covered by the vehicle’s warranty.
Always use the automatic transmission uid listed
inRecommended Fluids and Lubricants on
page 7-10.
For the 2.4 L, 3.5 L and 3.6 L engines, the transmission
fluid will not reach the end of the dipstick unless the
transmission is at operating temperature. If the
transmission fluid level must be checked, take the
vehicle to the dealer/retailer.
6-27

Automatic Transmission Fluid
(3.9L V6 Engine)
When to Check and Change Automatic
Transmission Fluid
A good time to check the automatic transmission fluid
level is when the engine oil is changed.
Change the fluid and filter at the intervals listed in
Scheduled Maintenance on page 7-3and be sure to
use the transmission fluid listed inRecommended
Fluids and Lubricants on page 7-10.
How to Check Automatic Transmission
Fluid
Because this operation can be a little difficult, you may
choose to have this done at the dealer/retailer service
department.
If you do it yourself, be sure to follow all the instructions
here or you could get a false reading on the dipstick.Notice:Too much or too little uid can damage your
transmission. Too much can mean that some of the
uid could come out and fall on hot engine parts or
exhaust system parts, starting a re. Too little uid
could cause the transmission to overheat. Be sure
to get an accurate reading if you check your
transmission uid.
Wait at least 30 minutes before checking the
transmission fluid level if you have been driving:
•When outside temperatures are above 32°C (90°F).
•At high speed for quite a while.
•In heavy traffic — especially in hot weather.
•While pulling a trailer.
To get the right reading, the fluid should be at
normal operating temperature, which is 82°C to 93°C
(180°F to 200°F).
Get the vehicle warmed up by driving about
24 km (15 miles) when outside temperatures are
above 10°C (50°F). If it is colder than 10°C (50°F),
you may have to drive longer.
6-28

Checking the Fluid Level
Prepare the vehicle as follows:
1. Park the vehicle on a level place. Keep the engine
running.
2. With the parking brake applied, place the shift lever
in P (Park).
3. With your foot on the brake pedal, move the
shift lever through each gear, pausing for about
three seconds in each one. Then, position the
shift lever in P (Park).
4. Let the engine run at idle for three to five minutes.
Then, without shutting off the engine, follow these
steps:
1. The transmission
fluid dipstick handle
has this symbol on it,
and is located near
the rear of the engine
compartment.
SeeEngine Compartment Overview on page 6-16
for more information on location.
2. Remove the dipstick and wipe it with a clean rag or
paper towel.3. Reinstall it back in all the way, wait three seconds,
and then pull it back out again.
4. Check both sides of the dipstick and read the
lower level. The fluid level must be within the
crosshatched area.
5. If the fluid level is in the acceptable range, reinstall
the dipstick back in all the way.
6-29