2004 CHEVROLET OPTRA ECU

Adding Coolant
If the level falls below the MIN (B) mark, add the proper
coolant mixtureat the surge tank,but only when the
engine is cool. If the surge tank is empty, a special fill
procedure is necessary. SeeCooling System on
page 5-27for instructions on “How to Add Coolant to
the Coolant Surge Tank.”
{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.
When replacing the pressure cap, make sure it is
hand-tight.
Coolant Surge Tank 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.
Engine Overheating
You will find a coolant temperature gage on your
vehicle’s instrument panel cluster. SeeEngine Coolant
Temperature Gage on page 3-32.
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3. Remove the bulb socket by turning it
counterclockwise.
4. Remove the bulb from the socket by pressing the
bulb and turning it counterclockwise.
5. Install the appropriate bulb into the socket.
6. Replace the bulb socket into the lamp housing.
Turn the bulb socket clockwise to secure.
7. Replace the trim cover.
8. Close the trunk or liftgate.Replacement Bulbs
Lamps Bulb Number
Back-Up 94535571
Center High-Mounted
Stoplamp/Sidemarker - Front
and Rear94535587
Headlamps - High-Beam 94535541
Headlamps - Low-Beam 94535546
Tail/Stoplamp 94535574
Turn Signal - Front and Parking
Lamp94535578
Turn Signal - Rear 94535572
For any bulb not listed here, contact your dealer.
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Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used
or how far it’s been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new GM original
equipment wheel.
Tire Chains
Notice:Use tire chains only where legal and only
when you must. Use only SAE Class “S” type chains
that are the proper size for your tires. Install them
on the front tires and tighten them as tightly as
possible with the ends securely fastened. Drive
slowly and follow the chain manufacturer’s
instructions. If you can hear the chains contacting
your vehicle, stop and retighten them. If the contact
continues, slow down until it stops. Driving too
fast or spinning the wheels with chains on will
damage your vehicle.
If a Tire Goes Flat
It’s unusual for a tire to “blowout” while you’re driving,
especially if you maintain your tires properly. If air goes
out of a tire, it’s much more likely to leak out slowly.
But if you should ever have a “blowout,” here are a few
tips about what to expect and what to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot off the
accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake to
a stop well out of the traffic lane.
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{CAUTION:
Incorrect wheel nuts or improperly tightened
wheel nuts can cause the wheel to come loose
and even come off. This could lead to an
accident. Be sure to use the correct wheel
nuts. If you have to replace them, be sure to
get new GM original equipment wheel nuts.
Stop somewhere as soon as you can and have
the nuts tightened with a torque wrench to the
proper torque specication. See “Capacities
and Specications” in the Index for wheel nut
torque specication.
Notice:Improperly tightened wheel nuts can lead
to brake pulsation and rotor damage. To avoid
expensive brake repairs, evenly tighten the wheel
nuts in the proper sequence and to the proper
torque specication. See “Capacities and
Specications” in the index for the wheel nut torque
specication.Do not try to put a wheel cover on your compact spare
tire. It will not fit. Store the wheel cover in the cargo
area until you have the flat tire repaired or replaced.
Notice:Wheel covers will not t on your compact
spare. If you try to put a wheel cover on the compact
spare, you could damage the cover or the spare.
Storing the Flat Tire and Tools
{CAUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision,
loose equipment could strike someone. Store
all these in the proper place.
Store the flat tire in the compact spare tire compartment.
Place the tire in the compartment, then secure the
retainer. Store the jack in its housing in the cargo area.
Secure the jack by turning the retainer clockwise.
Store the tools securely in the foam tray and place the
tray on top of the tire. Replace the trim cover.
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Storing the Spare Tire and Tools
{CAUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or collision,
loose equipment could strike someone. Store
all these in the proper place.
Store the compact spare tire in the compact spare tire
compartment. Place the compact spare tire in the
compartment, then secure the retainer. Store the jack in
its housing in the cargo area. Secure the jack by
turning the retainer clockwise. Store the tools securely
in the foam tray and place the tray on top of the
tire. Replace the trim cover.
The compact spare tire is for temporary use only.
Replace the compact spare tire with a full-size tire as
soon as you can. SeeCompact Spare Tire on page 5-72.
Compact Spare Tire
Although the compact spare tire was fully inflated when
your vehicle was new, it can lose air after a time.
Check the inflation pressure regularly. It should be
60 psi (420 kPa).
After installing the compact spare on your vehicle, you
should stop as soon as possible and make sure
your spare tire is correctly inflated. The compact spare
is made to perform well at speeds up to 50 mph
(80 km/h), so you can finish your trip and have your
full-size tire repaired or replaced where you want.
Of course, it is best to replace your spare with a full-size
tire as soon as you can. Your spare will last longer
and be in good shape in case you need it again.
Notice:When the compact spare is installed, don’t
take your vehicle through an automatic car wash
with guide rails. The compact spare can get caught
on the rails. That can damage the tire and wheel,
and maybe other parts of your vehicle.
Do not use your compact spare on other vehicles.
And do not mix your compact spare tire or wheel with
other wheels or tires. They will not fit. Keep your
spare tire and its wheel together.
Notice:Tire chains won’t t your compact spare.
Using them can damage your vehicle and can
damage the chains too. Don’t use tire chains on
your compact spare.
5-72

Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and fusible thermal links in the wiring itself.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical
size and rating.
There are spare fuses provided in the engine
compartment fuse block. If you ever have a problem on
the road and do not have a spare fuse, you can borrow
one that has the same amperage. Just pick a feature of
your vehicle that you can get along without — like the
radio or cigarette lighter — and use its fuse, if it is the
correct amperage. Replace it as soon as you can.
There are two fuse blocks in your vehicle: the instrument
panel fuse block and the engine compartment fuse block.
There is a fuse puller located on the engine
compartment fuse block. It can be used to easily
remove fuses from the fuse block.
Instrument Panel Fuse Block
The instrument panel fuse block is located on the end of
the instrument panel, on the driver’s side of the
vehicle. To access the fuses, open the fuse panel door
by pulling out.
To reinstall the door, insert the tabs at the back end
first, then push the door into the instrument panel
to secure it.Sedan shown, Hatchback similar
5-83

Engine Compartment Fuse BlockThe engine compartment fuse block is located on the
driver’s side of the vehicle, near the battery. SeeEngine
Compartment Overview on page 5-12for more
information on location. To access the fuses, press in
the top flap to release the cover.
To reinstall the cover, push the cover until it is secure.
5-86

Roadside Assistance Program
Security While You Travel
1-800-CHEV-USA (243-8872)
As the proud 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. Chevrolet’s Roadside
Assistance toll-free number is staffed by courteous
and capable Roadside Assistance Representatives who
are available 24 hours a day, 365 days a year.
We will provide the following services during the
Bumper-to-Bumper warranty period, at no expense
to you:
•Fuel Delivery:Delivery of enough fuel
($5 maximum) for the customer to get to the
nearest service station.
•Lock-out Service (identication required):
Replacement keys or locksmith service will
be covered at no charge if you are unable to gain
entry into your vehicle. Delivery of the replacement
key will be covered within 10 miles.
•Emergency Tow:Tow to the nearest dealership for
warranty service or in the event of a
vehicle-disabling accident. Assistance when the
vehicle is mired in sand, mud or snow.
•Flat Tire Change:Installation of a spare tire will be
covered at no charge. (The customer is responsible
for the repair or replacement of the tire if not
covered by a warrantable failure.)
•Jump Start:No-start occurrences which require a
battery jump start will be covered at no charge.
•Dealer Locator Service
In many instances, mechanical failures are covered
under Chevrolet’s Bumper-to-Bumper warranty.
However, when other services are utilized, our Roadside
Assistance Representatives will explain any payment
obligations you might incur.
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