2007 CHEVROLET HHR ECU

Weight of the Trailer
How heavy can a trailer safely be?
It should never weigh more than 1,000 lbs
(450 kg). But even that can be too heavy.
It depends on how you plan to use your rig. For
example, speed, altitude, road grades, outside
temperature and how much your vehicle is used to
pull a trailer are all important. It can also depend
on any special equipment that you have on
your vehicle, and the amount of tongue weight the
vehicle can carry. See “Weight of the Trailer
Tongue” later in this section for more information.
Maximum trailer weight is calculated assuming
only the driver is in the tow vehicle and it has all
the required trailering equipment. The weight
of additional optional equipment, passengers and
cargo in the tow vehicle must be subtracted
from the maximum trailer weight.
You can ask your dealer for our trailering
information or advice, or you can write us at our
Customer Assistance Offices. SeeCustomer
Assistance Offices on page 416for more
information.
Weight of the Trailer Tongue
The tongue load (A) of any trailer is an important
weight to measure because it affects the total
or gross weight of your vehicle. The Gross Vehicle
Weight (GVW) includes the curb weight of the
vehicle, any cargo you may carry in it, and
the people who will be riding in the vehicle. If you
have a lot of options, equipment, passengers,
or cargo in your vehicle, it will reduce the tongue
weight your vehicle can carry, which will also
reduce the trailer weight your vehicle can tow.
And if you tow a trailer, you must add the tongue
load to the GVW because your vehicle will be
carrying that weight, too. SeeLoading Your
Vehicle on page 269for more information about
your vehicle’s maximum load capacity.
279

Driving with a Trailer
Towing a trailer requires a certain amount of
experience. Before setting out for the open road,
you will want to get to know your rig. Acquaint
yourself with the feel of handling and braking with
the added weight of the trailer. And always
keep in mind that the vehicle you are driving is
now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check all trailer hitch parts and
attachments, safety chains, electrical connector,
lamps, tires and mirror adjustment. If the trailer has
electric brakes, start your vehicle and trailer
moving and then apply the trailer brake controller
by hand to be sure the brakes are working.
This lets you check your electrical connection at
the same time.
During your trip, check occasionally to be sure
that the load is secure, and that the lamps and any
trailer brakes are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead
as you would when driving your vehicle without
a trailer. This can help you avoid situations
that require heavy braking and sudden turns.
Passing
You will need more passing distance up ahead
when you are towing a trailer. And, because
the vehicle is a good deal longer, you will need to
go much farther beyond the passed vehicle
before you can return to your lane.
Backing Up
Hold the bottom of the steering wheel with one
hand. Then, to move the trailer to the left,
just move that hand to the left. To move the trailer
to the right, move your hand to the right. Always
back up slowly and, if possible, have someone
guide you.
283

{CAUTION:
If you spill fuel and then something
ignites it, you could be badly burned. Fuel
can spray out on you if you open the fuel
cap too quickly. This spray can happen if
your tank is nearly full, and is more likely
in hot weather. Open the fuel cap slowly
and wait for any hiss noise to stop. Then
unscrew the cap all the way.
Be careful not to spill fuel. Do not top off or overll
the tank and wait a few seconds after you have
nished pumping before removing the nozzle.
Clean fuel from painted surfaces as soon
as possible. SeeWashing Your Vehicle on
page 373.
When replacing the fuel cap, turn it clockwise until
it clicks. Make sure the cap is fully installed.
The diagnostic system can determine if the fuel
cap has been left off or improperly installed.
This would allow fuel to evaporate into the
atmosphere. SeeMalfunction Indicator Lamp on
page 188.The CHECK GAS CAP message will be displayed
on the Driver Information Center (DIC) if the
fuel cap is not properly installed. SeeDIC
Warnings and Messages on page 197for more
information.
To close the fuel door securely, push the door to
the closed position.
{CAUTION:
If a re starts while you are refueling, do
not remove the nozzle. Shut off the ow of
fuel by shutting off the pump or by
notifying the station attendant. Leave the
area immediately.
Notice:If you need a new fuel cap, be sure to
get the right type. Your dealer can get one
for you. If you get the wrong type, it may not
t properly. This may cause your malfunction
indicator lamp to light and may damage
your fuel tank and emissions system. See
Malfunction Indicator Lamp on page 188.
295

{CAUTION:
You can be burned if you spill coolant on
hot engine parts. Coolant contains
ethylene glycol, and it will burn if the
engine parts are hot enough. Do not spill
coolant on a hot engine.
Pressure Cap
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.
SeeEngine Compartment Overview on page 298
for more information on location.
Engine Overheating
You will nd a coolant temperature warning light
and a coolant temperature gage on your vehicle’s
instrument panel. SeeEngine Coolant
Temperature Warning Light on page 187and
Engine Coolant Temperature Gage on page 188
for more information.
309

Storing the Compact Spare Tire
and Tools
Use the following diagram as a guide for storing
the compact spare tire once you are done using it.
A. Retainer
B. Cover
C. Spare Tire
D. Wing NutE. Jack and Wheel
Wrench
F. Strap
G. Bolt1. Open the liftgate. SeeLiftgate on page 106
for more information.
2. Install the strap (F) on the oor of the spare
tire compartment.
3. Place the jack and wheel wrench (E) over the
bolt (G), making sure the strap is securely
stored, under the jack and wheel wrench.
4. Secure the jack and wheel wrench (E) with
the wing nut (D).
5. With the valve stem up, place the spare
tire (C) on the compartment oor.
6. Make sure the bolt (G) passes through the
wheel center.
7. Install the spare tire cover (B).
8. Secure the spare tire and tools with the
retainer (A).
The compact spare tire storage area is designed
only for the compact spare tire, the standard
tire cannot be stored there.
368

At Each Fuel Fill
It is important to perform these underhood checks
at each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 299for
further details.
Notice:It is important to check your oil
regularly and keep it at the proper level. Failure
to keep your engine oil at the proper level
can cause damage to your engine not covered
by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. See
Engine Coolant on page 306for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in
the windshield washer uid reservoir and add the
proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make
sure they are inated to the correct pressures. Do
not forget to check the spare tire. See
Inflation - Tire Pressure on page 344. Check to
make sure the spare tire is stored securely.
SeeChanging a Flat Tire on page 355.
Tire Wear Inspection
Tire rotation may be required for high mileage
highway drivers prior to the Engine Oil Life System
service notication. Check the tires for wear
and, if necessary, rotate the tires. SeeTire
Inspection and Rotation on page 345.
399

Roadside Assistance Program
In the U.S., call1-800-CHEV-USA
(1-800-243-8872)
In Canada, call1-800-268-6800
Service available 24 hours a day, 365 days a year.
As the owner of a new Chevrolet vehicle, you are
automatically enrolled in the Chevrolet Roadside
Assistance program. This value-added service is
intended to provide you with peace of mind as you
drive in the city or travel the open road.
Who is Covered?
Roadside Assistance coverage is for the vehicle
operator, regardless of ownership. A person driving
this vehicle without the consent of the owner is
not eligible for coverage.The following services are provided in the U.S.
during the Bumper-to-Bumper warranty period and,
in Canada, during the Base Warranty coverage
period of the New Vehicle Limited Warranty, up to
a maximum coverage of $100.
Fuel Delivery:Delivery of enough fuel for the
customer to get to the nearest service station
(about $5 in the U.S. and 10 litres in
Canada). Service to provide diesel may be
restricted. For safety reasons, propane
and other alternative fuels will not be provided
through this service.
Lock-out Service:To ensure security,
the driver must present the vehicle registration
and personal ID before lock-out service is
provided. Lock-out service will be covered at no
charge if you are unable to gain entry into your
vehicle. If your vehicle will not start, Roadside
Assistance will arrange to have your vehicle
towed to the nearest authorized dealership. In
the U.S., replacement keys made at the
customer’s expense will be covered within
10 miles (16 km).
418

Alternative Service:There may be times,
when Roadside Assistance cannot provide
timely assistance, your advisor may authorize
you to secure local emergency road service,
and you will be reimbursed up to $100 upon
submission of the original receipt to Roadside
Assistance.
In many instances, mechanical failures are
covered under Chevrolet’s Bumper-to-Bumper
warranty, and the duration of the Base Warranty
Coverage for Canadian customers of the new
Vehicle Limited Warranty. However, any cost for
parts and labor for non-warranty repairs are
the responsibility of the driver.
For prompt and efficient assistance when calling,
please provide the following to the Roadside
Assistance Representative:
Your name, home address, and home
telephone number.
Telephone number of your location.
Location of the vehicle.
Model, year, color, and license plate number.
Odometer reading, Vehicle Identication
Number (VIN), and delivery date of the vehicle.
Description of the problem.
While we hope you never have the occasion to
use our service, it is added security while traveling
for you and your family. Remember, we are
only a phone call away. U.S. customers call
Chevrolet Roadside Assistance:1-800-CHEV-USA
(1-800-243-8872), text telephone (TTY) users,
call1-888-889-2438, Canadian customers
call1-800-268-6800.
Chevrolet and General Motors of Canada Limited
reserve the right to limit services or reimbursement
to an owner or driver when, in their sole
discretion, the claims become excessive in
frequency or type of occurrence.
Roadside Assistance is not part of or included in
the coverage provided by the New Vehicle Limited
Warranty. Chevrolet and General Motors of
Canada Limited reserve the right to make any
changes or discontinue the Roadside Assistance
program at any time without notication.
420