ECU CHEVROLET HHR 2007 1.G Service Manual

Roof Rack System
Your vehicle may be equipped with a roof rack
system.
{CAUTION:
If you try to carry something on top of
your vehicle that is longer or wider than
the luggage carrier — like paneling,
plywood, a mattress and so forth — the
wind can catch it as you drive along.This
can cause you to lose control. What you
are carrying could be violently torn off, and
this could cause you or other drivers to
have a collision, and of course damage
your vehicle. You may be able to carry
something like this inside. But, never carry
something longer or wider than the
luggage carrier on top of your vehicle.Notice:Loading cargo on the luggage carrier
that weighs more than 150 lbs (68 kg) or hangs
over the rear sides of the vehicle may damage
your vehicle. Load cargo so that it rests on the
slats as far forward as possible and against the
side rails making sure to fasten it securely.
Notice:Loading cargo directly on the roof of
the vehicle may cause damage to the vehicle
and would not be covered under warranty.
Do not place cargo on the roof the vehicle.
Do not exceed the maximum vehicle capacity
when loading your vehicle. For more information
on vehicle capacity and loading, seeLoading Your
Vehicle on page 269.
To prevent damage or loss of cargo as you are
driving, check frequently to ensure your cargo
is securely fastened.
The roof rack system has siderails that are
attached to the roof. All cargo must be loaded on
the luggage carrier crossrails only.
Use GM accessory racks that are compatible with
your roof rack system, these are available at
your GM dealer.
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Convenience Net
Your vehicle may have a convenience net located
on the back wall of the cargo area. There are
six metal rings in the cargo area that the net can
be attached to. Two are on the oor behind
the rear seat, two are on the oor near the liftgate
and the last two are near the liftgate glass. The
net can be positioned on the liftgate using
two rings securing the cargo in a envelope or
using four rings, keeping the cargo from falling
over during sharp turns or quick starts and stops.
The net can also be positioned using the four
rings on the oor, with cargo underneath. The net
is not for larger, heavier loads.
Sunroof
The vehicle may have a power sunroof.
The switches that
operate the sunroof
are located in the
headliner.
To open or close the sunroof, the ignition must be
in RUN, in ACC, or Retained Accessory Power
(RAP) must be active. SeeRetained Accessory
Power (RAP) on page 119.
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Brake System Warning Light..................... 185
Anti-Lock Brake System Warning Light........ 186
Enhanced Traction System Warning Light.... 187
Engine Coolant Temperature
Warning Light........................................ 187
Engine Coolant Temperature Gage............ 188
Malfunction Indicator Lamp........................ 188
Oil Pressure Light..................................... 192
Security Light............................................ 193
Fog Lamp Light......................................... 193
Highbeam On Light................................... 193
Fuel Gage................................................. 193
Driver Information Center (DIC).................. 194
DIC Operation and Displays...................... 195
DIC Warnings and Messages.................... 197
DIC Vehicle Personalization....................... 200Audio System(s)......................................... 206
Setting the Time (Without Date Display).... 207
Setting the Time (With Date Display)......... 208
Radio with CD (Base)............................... 210
Radio with CD (MP3)................................ 215
Using an MP3........................................... 226
XM Radio Messages................................. 232
Theft-Deterrent Feature............................. 233
Audio Steering Wheel Controls.................. 234
Radio Reception........................................ 234
Care of Your CDs..................................... 235
Care of the CD Player.............................. 235
Fixed Mast Antenna.................................. 236
XM™ Satellite Radio Antenna System....... 236
Section 3 Instrument Panel
150

If your vehicle has a rear seat that will
accommodate a rear-facing child restraint, a label
on your sun visor says, “Never put a rear-facing
child seat in the front.” This is because the risk to
the rear-facing child is so great, if the airbag
deploys.
{CAUTION:
Even though the passenger sensing
system is designed to turn off the
passenger’s frontal airbag if the system
detects a rear-facing child restraint, no
system is fail-safe, and no one can
guarantee that an airbag will not deploy
under some unusual circumstance, even
though it is turned off. We recommend
that rear-facing child restraints be secured
in the rear seat, even if the airbag is off.If your vehicle does not have a rear seat that will
accommodate a rear-facing child restraint,
never put a child in a rear-facing child restraint in
the right front passenger seat unless the
passenger airbag status indicator shows off and
the airbag is off. Here is why:
{CAUTION:
Even though the passenger sensing
system is designed to turn off the
passenger’s frontal airbag if the system
detects a rear-facing child restraint, no
system is fail-safe, and no one can
guarantee that an airbag will not deploy
under some unusual circumstance, even
though it is turned off. We recommend
that rear-facing child restraints be
transported in vehicles with a rear seat
that will accommodate a rear-facing child
restraint, whenever possible.
183

Security Light
For more information on
this light see
Theft-Deterrent Systems
on page 111.
Fog Lamp Light
The fog lamp light will
come on when the fog
lamps are in use.
The light will go out when the fog lamps are
turned off. SeeFog Lamps on page 166for more
information.
Highbeam On Light
This light comes on
whenever the
high-beam headlamps
are on.
Fuel Gage
Your fuel gage tells you
about how much fuel
you have left.
193

Radio Display Message Condition Action Required
CAT Not Found No channel available for
the chosen categoryThere are no channels available for the selected category.
The system is working properly.
XM Theft Locked Theftlock
®active The XM™ receiver in the vehicle may have previously been
in another vehicle. For security purposes, XM™ receivers
cannot be swapped between vehicles. If this message
displays after having your vehicle serviced, check with your
dealer.
XM Radio ID Radio ID label (channel 0) If tuned to channel 0, this message alternates with the
XM™ Radio eight digit radio ID label. This label is needed
to activate the service.
Unknown Radio ID not known
(should only be if
hardware failure)If this message is received when tuned to channel 0, there
could be a receiver fault. Consult with your dealer.
Check XM Receivr Hardware failure If this message does not clear within a short period of time,
the receiver could have a fault. Consult with your dealer.
XM Not Available XM™ Not Available If this message does not clear within a short period of time,
the receiver could have a fault. Consult with your dealer.
Theft-Deterrent Feature
THEFTLOCK®is designed to discourage theft of
your vehicle’s radio. The feature works
automatically by learning a portion of the Vehicle
Identication Number (VIN). If the radio is
moved to a different vehicle, it will not operate and
LOCK or LOCKED will appear on the display.With THEFTLOCK
®activated, the radio will not
operate if stolen.
233

Winter Driving
Here are some tips for winter driving:
Have your vehicle in good shape for winter.
You may want to put winter emergency
supplies in your vehicle.
Also seeTires on page 336.Include an ice scraper, a small brush or broom, a
supply of windshield washer uid, a rag, some
winter outer clothing, a small shovel, a ashlight, a
red cloth, and a couple of reective warning
triangles. And, if you will be driving under severe
conditions, include a small bag of sand, a
piece of old carpet, or a couple of burlap bags to
help provide traction. Be sure you properly
secure these items in your vehicle.
Driving on Snow or Ice
Most of the time, those places where the tires
meet the road probably have good traction.
However, if there is snow or ice between the tires
and the road, you can have a very slippery
situation. You will have a lot less traction, or grip,
and will need to be very careful.
264

If you put things inside your vehicle — like
suitcases, tools, packages, or anything
else — they will go as fast as the vehicle goes.
If you have to stop or turn quickly, or if there is a
crash, they will keep going.
{CAUTION:
Things you put inside your vehicle can
strike and injure people in a sudden stop
or turn, or in a crash.
Put things in the cargo area of your
vehicle. Try to spread the weight
evenly.
Never stack heavier things, like
suitcases, inside the vehicle so that
some of them are above the tops of
the seats.
Do not leave an unsecured child
restraint in your vehicle.
When you carry something inside the
vehicle, secure it whenever you can.
Do not leave a seat folded down
unless you need to.
Towing
Towing Your Vehicle
Consult your dealer or a professional towing
service if you need to have your disabled vehicle
towed. SeeRoadside Assistance Program on
page 418.
If you want to tow your vehicle behind another
vehicle for recreational purposes (such as behind
a motorhome), see “Recreational Vehicle
Towing” following.
Recreational Vehicle Towing
Recreational vehicle towing means towing your
vehicle behind another vehicle — such as behind a
motorhome. The two most common types of
recreational vehicle towing are known as “dinghy
towing” (towing your vehicle with all four wheels
on the ground) and “dolly towing” (towing
your vehicle with two wheels on the ground and
two wheels up on a device known as a “dolly”).
274

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