2005 CHEVROLET CLASSIC ECU

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 trunk or rear area of your
vehicle. In a trunk, put them as far forward
as you can. Try to spread the weight
evenly. If you have fold-down rear seats,
you will nd four anchors on the back wall
of your trunk. You can use these anchors
to tie down lighter loads. They are not
strong enough for heavy things, however,
so put them as far forward as you can in
the trunk or rear area.
CAUTION: (Continued)
CAUTION: (Continued)

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 7-5.
If you want to tow your vehicle behind another vehicle
for recreational purposes (such as behind a motorhome),
see “Recreational Vehicle Towing” following.
4-32

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”).
With the proper preparation and equipment, many
vehicle can be towed in these ways. See “Dinghy
Towing” and “Dolly Towing”, following.
Here are some important things to consider before you
do recreational vehicle towing:
•What’s the towing capacity of the towing vehicle?
Be sure you read the tow vehicle manufacturer’s
recommendations.
•How far will you tow? Some vehicles have
restrictions on how far and how long they can tow.
•Do you have the proper towing equipment?
See your dealer or trailering professional for
additional advice and equipment recommendations.
•Is your vehicle ready to be towed? Just as you would
prepare your vehicle for a long trip, you’ll want to
make sure your vehicle is prepared to be towed.
SeeBefore Leaving on a Long Trip on page 4-19.
Dinghy Towing
To tow your vehicle with all four wheels on the ground,
follow these steps:
1. Position the vehicle to tow and then secure it.
2. Turn the ignition switch to OFF.
3. Set the parking brake.
4. To prevent your battery from draining while the
vehicle is being towed, remove the following
fuses from the driver’s side instrument panel fuse
block: A) Wiper, G) PCM ACC and J) IPC/BFC
ACC. SeeInstrument Panel Fuse Block on
page 5-80for location of these fuses.
5. Turn the ignition switch to ACCESSORY.
4-33

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’re towing a trailer. And, because you’re 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.
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 additional
wiring. Check with your dealer. The arrows on your
instrument panel will flash whenever you signal a
turn or lane change. Properly hooked up, the trailer
lamps will also flash, telling other drivers you are about
to turn, change lanes or stop.
4-39

Adding Coolant
If you need more coolant, add the proper DEX-COOL®
coolant mixture at the coolant surge tank, but only
when the engine is cool. If the coolant surge tank is
empty, a special fill procedure is necessary. SeeEngine
Overheating on page 5-22andCooling System on
page 5-24.
{CAUTION:
Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. Never turn the surge tank pressure
cap — even a little — when the engine and
radiator are hot.
{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.
The coolant surge tank pressure cap must be fully
installed on the coolant surge tank. SeeEngine
Compartment Overview on page 5-12for more
information on location.
5-21

Front Turn Signal Lamps
1. Remove the headlamp assembly as described in
Bulb Replacement on page 5-40.
2. Press the tab on the white socket while twisting it
less than one-quarter turn counterclockwise and
pull it out.
3. Remove the old bulb and replace it with a new one.4. Turn the socket back into place.
5. Return the lamp assembly to its original position.
Be sure to line up the holes in the lamp assembly
to the round ends of the mounting pins.
6. Press down on the two latches to hook in the lamp
assembly.
Center High-Mounted Stoplamp
(CHMSL)
1. Open the trunk and locate the CHMSL housing on
the underside of the rear window shelf.
2. Turn the socket one-quarter turn counterclockwise
to remove it.
3. Remove the burned out bulb and replace with a
new one.
4. Turn the socket clockwise to secure.
5. Close the trunk.
5-42

6. Remove the backplate by pulling up on the
two upper and two lower tabs.
7. Pull the bulb to remove it from the socket.
8. Replace the bulb.
9. Reverse the steps to reassemble the backplate and
attach the taillamp assembly to the vehicle. Make
sure that all four tabs of the backplate are securely
fastened to the taillamp assembly before reinstalling
it on the vehicle.
When securing the lamp assembly back into place,
align the assembly so that the trunk lid doesn’t
contact it.
10. Close the trunk.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-Up/Rear Turn 3156
Center High-Mounted Stoplamp 912
Front Parking/Turn 3157A or 3157NA
Front Sidemarker 24
High-Beam Headlamp 9005
Low-Beam Headlamp 9006
Taillamps/Stoplamp 3057
For replacement bulbs not listed here, contact your
dealer.
5-45

{CAUTION:
Using the wrong replacement wheels, wheel
bolts or wheel nuts on your vehicle can be
dangerous. It could affect the braking and
handling of your vehicle, make your tires lose
air and make you lose control. You could have
a collision in which you or others could be
injured. Always use the correct wheel, wheel
bolts and wheel nuts for replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-60for more
information.
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.
5-59

Storing a Flat or 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.
Refer to the following diagram to assist you in storing
the compact spare tire and tools.A. Nut
B. Cover
C. Wing Bolt
D. AdapterE. Wrench
F. Jack
G. Tool Tray
H. Flat Tire
To store a flat tire, do the following:
1. Put the flat tire (H) in the compact spare tire
compartment.
2. Secure the tire with the adapter (D) and wing
bolt (C).
3. Place the cover (B) and the nut on top of the flat tire.
4. Store the jack (F) and the wrench (E) in the tool
tray (G).
5-69