2006 CHEVROLET HHR octane

If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. SeeFilling the Tank on page 5-8. The
diagnostic system can determine if the fuel cap has
been left off or improperly installed. A loose or missing
fuel cap will allow fuel to evaporate into the atmosphere.
A few driving trips with the cap properly installed
should turn the light off.
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
SeeGasoline Octane on page 5-5. Poor fuel quality will
cause your engine not to run as efficiently as designed.
You may notice this as stalling after start-up, stalling
when you put the vehicle into gear, misring, hesitation
on acceleration, or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the
light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least
one full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
your dealer can check the vehicle. Your dealer has
the proper test equipment and diagnostic tools to x any
mechanical or electrical problems that may have
developed.
3-37

Service............................................................5-3
Accessories and Modications..........................5-3
California Proposition 65 Warning.....................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside
of Your Vehicle...........................................5-4
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Specications....................................5-5
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling the Tank..............................................5-8
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Oil Life System..................................5-16
Engine Air Cleaner/Filter................................5-18
Automatic Transaxle Fluid..............................5-19
Manual Transaxle Fluid..................................5-19
Hydraulic Clutch...........................................5-20
Engine Coolant.............................................5-20Pressure Cap...............................................5-23
Engine Overheating.......................................5-23
Cooling System............................................5-25
Windshield Washer Fluid................................5-29
Brakes........................................................5-30
Battery........................................................5-32
Jump Starting...............................................5-33
Headlamp Aiming...........................................5-38
Bulb Replacement..........................................5-41
Halogen Bulbs..............................................5-41
Headlamps, Front Turn Signal,
and Parking Lamps....................................5-42
Center High-Mounted Stoplamp (CHMSL).........5-43
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps.........................................5-44
Replacement Bulbs.......................................5-45
Windshield Wiper Blade Replacement..............5-45
Tires..............................................................5-46
Tire Sidewall Labeling...................................5-47
Tire Terminology and Denitions.....................5-49
Ination - Tire Pressure.................................5-52
Tire Inspection and Rotation...........................5-53
When It Is Time for New Tires.......................5-54
Section 5 Service and Appearance Care
5-1

Fuel
The 8th digit of your vehicle identication number (VIN)
shows the code letter or number that identies
your engine. You will nd the VIN at the top left of
the instrument panel. SeeVehicle Identification
Number (VIN) on page 5-82.
Gasoline Octane
If your vehicle has the 2.2L L4 engine (VIN Code D),
use regular unleaded gasoline with a posted octane
rating of 87 or higher. If the octane rating is less than 87,
you may notice an audible knocking noise when you
drive, commonly referred to as spark knock. If this
occurs, use a gasoline rated at 87 octane or higher as
soon as possible. If you are using gasoline rated at
87 octane or higher and you hear heavy knocking, your
engine needs service.
If your vehicle has the 2.4L L4 engine (VIN Code P),
use premium unleaded gasoline with a posted octane
rating of 91 or higher. You may also use regular
unleaded gasoline rated at 87 octane or higher, but
your vehicle’s acceleration may be slightly reduced,
and you may notice a slight audible knocking noise,
commonly referred to as spark knock.If the octane is less than 87, you may notice a heavy
knocking noise when you drive. If this occurs, use
a gasoline rated at 87 octane or higher as soon as
possible. Otherwise, you might damage your engine.
If you are using gasoline rated at 87 octane or
higher and you hear heavy knocking, your engine
needs service.
Gasoline Specications
At a minimum, gasoline should meet ASTM
specication D 4814 in the United States or
CAN/CGSB-3.5 in Canada. Some gasolines may
contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT).
General Motors recommends against the use of
gasolines containing MMT. SeeAdditives on page 5-6
for additional information.
5-5

Notice:Your vehicle was not designed for fuel
that contains methanol. Do not use fuel containing
methanol. It can corrode metal parts in your fuel
system and also damage the plastic and rubber
parts. That damage would not be covered under
your warranty.
Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains MMT. General Motors
recommends against the use of such gasolines.
Fuels containing MMT can reduce the life of spark plugs
and the performance of the emission control system
may be affected. The malfunction indicator lamp
may turn on. If this occurs, return to your authorized GM
dealer for service.Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard
to nd. Never use leaded gasoline or any other fuel
not recommended in the previous text on fuel. Costly
repairs caused by use of improper fuel would not
be covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you will be driving.
5-7

Using the Maintenance Schedule
We at General Motors want to help you keep your vehicle
in good working condition. But we do not know exactly
how you will drive it. You may drive very short distances
only a few times a week. Or you may drive long distances
all the time in very hot, dusty weather. You may use your
vehicle in making deliveries. Or you may drive it to work,
to do errands, or in many other ways.
Because of all the different ways people use their
vehicles, maintenance needs vary. You may need more
frequent checks and replacements. So please read
the following and note how you drive. If you have any
questions on how to keep your vehicle in good condition,
see your GM Goodwrench
®dealer.
This schedule is for vehicles that:
carry passengers and cargo within recommended
limits. You will nd these limits on the tire and
loading information label. SeeLoading Your Vehicle
on page 4-32.
are driven on reasonable road surfaces within legal
driving limits.
use the recommended fuel. SeeGasoline Octane
on page 5-5.
The services inScheduled Maintenance on page 6-4
should be performed when indicated. SeeAdditional
Required Services on page 6-6andMaintenance
Footnotes on page 6-7for further information.
{CAUTION:
Performing maintenance work on a vehicle
can be dangerous. In trying to do some jobs,
you can be seriously injured. Do your own
maintenance work only if you have the
required know-how and the proper tools and
equipment for the job. If you have any doubt,
see your GM Goodwrench
®dealer to have a
qualied technician do the work.
Some maintenance services can be complex.
So, unless you are technically qualied and have
the necessary equipment, you should have your
GM Goodwrench
®dealer do these jobs.
When you go to your GM Goodwrench
®dealer for
your service needs, you will know that GM-trained
and supported service technicians will perform the
work using genuine GM parts.
If you want to purchase service information, see
Service Publications Ordering Information on page 7-14.
6-3

Enhanced Traction System (ETS)......................4-10
Warning Light.............................................3-34
Entry/Exit Lighting...........................................3-17
Event Data Recorders (EDR)............................. 7-9
Extender, Safety Belt.......................................1-33
F
Filter
Engine Air Cleaner......................................5-18
Finish Damage...............................................5-80
Fixed Mast Antenna........................................3-80
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-61
Flat Tire, Changing.........................................5-62
Flat Tire, Storing.............................................5-70
Fluid
Automatic Transaxle.....................................5-19
Manual Transaxle........................................5-19
Windshield Washer......................................5-29
Fog Lamp Light..............................................3-39
Fog Lamps ....................................................3-16
Folding Rear Seat...........................................1-10
Folding Seatback, Passenger............................. 1-8
Front Console Storage Area.............................2-45Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage .........................................................3-40
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Fuses
Engine Compartment Fuse Block...................5-85
Floor Console Fuse Block.............................5-84
Fuses and Circuit Breakers...........................5-83
Windshield Wiper.........................................5-83
G
Gage
Engine Coolant Temperature.........................3-35
Fuel..........................................................3-40
Speedometer..............................................3-26
Tachometer.................................................3-26
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-45
GM Mobility Reimbursement Program.................. 7-5
5