engine CHEVROLET HHR 2007 1.G Workshop Manual

If You Do Decide To Pull A Trailer
If you do, here are some important points:
There are many different laws, including speed
limit restrictions, having to do with trailering.
Make sure your rig will be legal, not only where
you live but also where you will be driving.
A good source for this information can be state
or provincial police.
Consider using a sway control. You can ask a
hitch dealer about sway controls.
Do not tow a trailer at all during the rst
1,000 miles (1 600 km) your new vehicle
is driven. Your engine, axle or other parts
could be damaged.
Then, during the rst 500 miles (800 km) that
you tow a trailer, do not drive over 50 mph
(80 km/h) and do not make starts at full
throttle. This helps your engine and other parts
of your vehicle wear in at the heavier loads.
Obey speed limit restrictions when towing a
trailer. Do not drive faster than the maximum
posted speed for trailers, or no more than
55 mph (90 km/h), to save wear on your
vehicle’s parts.
Do not tow when the outside air temperature
is above 100°F (38°C).
Do not tow more than 1,000 miles (1 600 km)
per year.
Three important considerations have to do with
weight:
The weight of the trailer
The weight of the trailer tongue
The total weight on your vehicle’s tires
278

Hitches
It is important to have the correct hitch equipment.
Crosswinds, large trucks going by and rough
roads are a few reasons why you will need the
right hitch. Here are some rules to follow:
The rear bumper on your vehicle is not
intended for hitches. Do not attach rental
hitches or other bumper-type hitches to it.
Use only a frame-mounted hitch that does
not attach to the bumper.
Will you have to make any holes in the body
of your vehicle when you install a trailer
hitch? If you do, then be sure to seal the holes
later when you remove the hitch. If you do
not seal them, deadly carbon monoxide (CO)
from your exhaust can get into your vehicle.
SeeEngine Exhaust on page 132. Dirt
and water can also enter the vehicle.
Safety Chains
You should always attach chains between your
vehicle and your trailer. Cross the safety
chains under the tongue of the trailer so that the
tongue will not drop to the road if it becomes
separated from the hitch. Instructions about safety
chains may be provided by the hitch manufacturer
or by the trailer manufacturer. Follow the
manufacturer’s recommendation for attaching
safety chains and do not attach them to the
bumper. Always leave just enough slack so you
can turn with your rig. And, never allow safety
chains to drag on the ground.
Trailer Brakes
Does your trailer have its own brakes? Be sure to
read and follow the instructions for the trailer
brakes so you will be able to install, adjust and
maintain them properly. Do not try to tap into your
vehicle’s brake system. If you do, both brake
systems will not work well, or at all.
282

Making Turns
Notice:Making very sharp turns while
trailering could cause the trailer to come in
contact with the vehicle. Your vehicle could be
damaged. Avoid making very sharp turns
while trailering.
When you are turning with a trailer, make wider
turns than normal. Do this so your trailer will
not strike soft shoulders, curbs, road signs, trees
or other objects. Avoid jerky or sudden
maneuvers. Signal well in advance.
Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a
different turn signal asher and/or extra wiring.
Check with your dealer. The arrows on your
instrument panel will ash whenever you signal a
turn or lane change. Properly hooked up, the
trailer lamps will also ash, telling other drivers you
are about to turn, change lanes or stop.When towing a trailer, the arrows on your
instrument panel will ash for turns even if the
bulbs on the trailer are burned out. Thus, you may
think drivers behind you are seeing your 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 transaxle
temperatures may result and damage your
vehicle. Frequent stops are very important to
allow the engine and transaxle to cool.
When towing under severe conditions such as hot
ambient temperatures or steep grades, your
vehicle may experience more transaxle shifting.
A COOLING MODE ON message may also appear
in the DIC.This alerts the driver that the shifting
mode is in progress and is aiding engine cooling.
SeeDIC Warnings and Messages on page 197
DIC Warnings and Messages for more information.
284

Reduce speed and shift to a lower gearbefore
you start down a long or steep downgrade. If you
do not shift down, you might have to use your
brakes so much that they would get hot and
no longer work well.
Pay attention to the engine coolant gage. If the
indicator is in the red area, turn off the air
conditioning to reduce engine load. SeeEngine
Overheating on page 309.
Parking on Hills
{CAUTION:
You really should not park your vehicle,
with a trailer attached, on a hill. If
something goes wrong, your rig could
start to move. People can be injured, and
both your vehicle and the trailer can be
damaged.But if you ever have to park your rig on a hill, here
is how to do it:
1. Apply your regular brakes, but do not shift into
PARK (P) for an automatic transaxle, or into
gear for a manual transaxle. When parking
uphill, turn your wheels away from the
curb. When parking downhill, turn your wheels
into the curb.
2. Have someone place chocks under the trailer
wheels.
3. When the wheel chocks are in place, release
the regular brakes until the chocks absorb
the load.
4. Reapply the regular brakes. Then apply your
parking brake, and then shift into PARK (P) for
an automatic transaxle or REVERSE (R) for a
manual transaxle.
5. Release the regular brakes.
285

When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal
down while you:
Start your engine.
Shift into a gear.
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
Your vehicle will need service more often when
you are pulling a trailer. SeeScheduled
Maintenance on page 393for more on this.
Things that are especially important in trailer
operation are automatic transaxle uid
(do not overll), engine oil, drive belt, cooling
system and brake system.
Each of these is covered in this manual, and the
Index will help you nd them quickly. If you
are trailering, it is a good idea to review this
information before you start your trip.
Check periodically to see that all hitch nuts and
bolts are tight.
Engine Cooling When Trailer Towing
Your cooling system may temporarily overheat
during severe operating conditions. SeeEngine
Overheating on page 309.
286

Service........................................................ 289
Accessories and Modications................... 289
California Proposition 65 Warning.............. 290
Doing Your Own Service Work.................. 290
Adding Equipment to the Outside of
Your Vehicle.......................................... 291
Fuel............................................................. 291
Gasoline Octane........................................ 291
Gasoline Specications.............................. 292
California Fuel........................................... 292
Additives................................................... 292
Fuels in Foreign Countries........................ 293
Filling the Tank......................................... 294
Filling a Portable Fuel Container............... 296
Checking Things Under the Hood.............. 296
Hood Release........................................... 297
Engine Compartment Overview.................. 298
Engine Oil................................................. 299
Engine Oil Life System.............................. 302
Engine Air Cleaner/Filter............................ 304
Automatic Transaxle Fluid......................... 305
Manual Transaxle Fluid............................. 305
Hydraulic Clutch........................................ 306
Engine Coolant.......................................... 306Pressure Cap............................................ 309
Engine Overheating................................... 309
Cooling System......................................... 312
Windshield Washer Fluid........................... 316
Brakes...................................................... 317
Battery...................................................... 320
Jump Starting............................................ 320
Headlamp Aiming........................................ 327
Bulb Replacement....................................... 330
Halogen Bulbs........................................... 330
Headlamps, Front Turn Signal, and
Parking Lamps....................................... 330
Center High-Mounted Stoplamp (CHMSL) ... 331
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps...................................... 332
License Plate Lamp................................... 334
Replacement Bulbs................................... 334
Windshield Wiper Blade Replacement....... 335
Tires............................................................ 336
Tire Sidewall Labeling............................... 337
Tire Terminology and Denitions............... 340
Ination - Tire Pressure............................. 344
Tire Inspection and Rotation...................... 345
Section 5 Service and Appearance Care
287

When It Is Time for New Tires.................. 347
Buying New Tires...................................... 347
Different Size Tires and Wheels................ 349
Uniform Tire Quality Grading..................... 350
Wheel Alignment and Tire Balance............ 351
Wheel Replacement.................................. 352
Tire Chains............................................... 353
If a Tire Goes Flat.................................... 354
Changing a Flat Tire................................. 355
Removing the Spare Tire and Tools.......... 356
Removing the Flat Tire and Installing
the Spare Tire....................................... 359
Storing a Flat or Spare Tire and Tools...... 365
Compact Spare Tire.................................. 369
Appearance Care........................................ 370
Cleaning the Inside of Your Vehicle.......... 370
Fabric/Carpet............................................. 371
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 372
Care of Safety Belts.................................. 373
Weatherstrips............................................ 373
Washing Your Vehicle............................... 373
Cleaning Exterior Lamps/Lenses................ 374Finish Care............................................... 374
Windshield and Wiper Blades.................... 375
Aluminum or Chrome-Plated Wheels......... 375
Tires......................................................... 376
Sheet Metal Damage................................. 376
Finish Damage.......................................... 377
Underbody Maintenance............................ 377
Chemical Paint Spotting............................ 377
Vehicle Care/Appearance Materials............ 378
Vehicle Identication.................................. 379
Vehicle Identication Number (VIN)........... 379
Service Parts Identication Label............... 379
Electrical System........................................ 380
Add-On Electrical Equipment..................... 380
Headlamp Wiring....................................... 380
Windshield Wiper Fuses............................ 380
Power Windows and Other Power
Options.................................................. 380
Fuses and Circuit Breakers....................... 381
Floor Console Fuse Block......................... 381
Engine Compartment Fuse Block............... 383
Capacities and Specications.................... 386
Section 5 Service and Appearance Care
288

California Proposition 65 Warning
Most motor vehicles, including this one, contain
and/or emit chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. Engine exhaust, many parts and
systems (including some inside the vehicle), many
uids, and some component wear by-products
contain and/or emit these chemicals.
Doing Your Own Service Work
{CAUTION:
You can be injured and your vehicle could
be damaged if you try to do service work
on a vehicle without knowing enough
about it.
Be sure you have sufficient knowledge,
experience, the proper replacement
parts, and tools before you attempt any
vehicle maintenance task.
CAUTION: (Continued)
CAUTION: (Continued)

Be sure to use the proper nuts, bolts,
and other fasteners. English and
metric fasteners can be easily
confused. If you use the wrong
fasteners, parts can later break or fall
off. You could be hurt.
If you want to do some of your own service work,
you will want to use the proper service manual.
It tells you much more about how to service your
vehicle than this manual can. To order the
proper service manual, seeService Publications
Ordering Information on page 430.
Your vehicle has an airbag system. Before
attempting to do your own service work, see
Servicing Your Airbag-Equipped Vehicle on
page 88.
You should keep a record with all parts receipts
and list the mileage and the date of any service
work you perform. SeeMaintenance Record
on page 407.
290

Adding Equipment to the Outside
of Your Vehicle
Things you might add to the outside of your
vehicle can affect the airow around it. This may
cause wind noise and affect windshield washer
performance. Check with your dealer before
adding equipment to the outside of your vehicle.
Fuel
Use of the recommended fuel is an important part
of the proper maintenance of your vehicle. To
help keep your engine clean and maintain optimum
vehicle performance, GM recommends the use
of gasoline advertised as TOP TIER Detergent
Gasoline.
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 379.
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.
291

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 292for additional information.
California Fuel
If your vehicle is certied to meet California
Emissions Standards, it is designed to operate on
fuels that meet California specications. See
the underhood emission control label. If this fuel is
not available in states adopting California
emissions standards, your vehicle will operate
satisfactorily on fuels meeting federal
specications, but emission control system
performance may be affected. The malfunction
indicator lamp may turn on and your vehicle may
fail a smog-check test.SeeMalfunction Indicator Lamp on page 188.If
this occurs, return to your authorized GM dealer for
diagnosis. If it is determined that the condition is
caused by the type of fuel used, repairs may
not be covered by your warranty.
Additives
To provide cleaner air, all gasolines in the United
States are now required to contain additives
that will help prevent engine and fuel system
deposits from forming, allowing your emission
control system to work properly. In most cases,
you should not have to add anything to your fuel.
However, some gasolines contain only the
minimum amount of additive required to meet U.S.
Environmental Protection Agency regulations.
To help keep fuel injectors and intake valves clean,
or if your vehicle experiences problems due to
dirty injectors or valves, look for gasoline that is
advertised as TOP TIER Detergent Gasoline. Also,
your dealer has additives that will help correct
and prevent most deposit-related problems.
292