Page 185 of 358

Trailer Wiring Harness
The light duty trailer wiring is a six-wire harness
assembly. The optional heavy-duty trailer wiring is an
eight-wire harness assembly. The harnesses are stored
under the vehicle,
on the driver’s side corner frame
crossmember. The heavy-duty trailer wiring has
a
30-amp feed wire with an inline fuse located by the
junction block. See “Fuses and Circuit Breakers”
in the
Index. Both harnesses have no connector and should be
wired by
ilt qualified electrical technician. The technician
can use the following color code chart when connecting
the wiring harness to your trailer.
Dark Blue: Use for electric trailer brakes or
auxiliary wiring.
Red: Use for battery charging: it connects to the
starter solenoid (eight-wire harness only).
Light Green: Back-up lamps (eight-wire
harness only).
Brown: Taillamps and parking lamps.
Yellow: Left stoplamp and turn signal.
Dark Green: Right stoplamp and turn signal.
0 White (Heavy Gage): Ground wire.
White (Light Gage): Auxiliary stoplamp.
Securely attach the harness to the trailer, then tape or
strap
it to your vehicle’s frame rail. Be sure you leave it
loose enough so the wiring doesn’t bend or break, but
not
so loose that it drags on the ground. Store the
harness
in its original place. Wrap the harness together
and tie
it neatly so it won’t be damaged.
4-53
ProCarManuals.com
Page 186 of 358
fi NOTES
4-54
ProCarManuals.com
Page 187 of 358
Section 5 Problems on the Road
Here you’ll find what to do about some problems that can occur on the road.
5-2
5-3
5-3
5-7
5- 10
5-11
5-12
5- 12
5- 14 How
to Use
Warning Flashers
Other Types of Warning Devices
Step-by-step Procedure for Jump Starting
Information You Should Know Before Towing
Towing Your Vehicle From the Front
Towing Your Vehicle From the Rear
If Your Engine
is Overheating
If Steam is Coming From Your Engine
Cooling System 5-16
5-21
5-21
5-29
5-30
5-3 1
5-32
5-32 How to Add
Coolant
What to do if a Tire Goes Flat
How to Change a Flat Tire
Where to Store the Flat Tire and Tools
Information on the Compact Spare Tire
If You’re Stuck in Sand, Mud, Snow or on Ice
How to Rock Your Vehicle to Get Unstuck
Using Recovery Hooks
5-1
ProCarManuals.com
Page 188 of 358
Hazard Warning Flashers
Your hazard warning flashers let you warn others. They
also let police know you have
a problem. Your front and
rear turn signal lamps will flash
on and off. Press the button
on top
of
the steering column all the
way down to make your
front and rear turn signal
lamps flash on and off.
Your hazard warning flashers work no matter what
position your key is in, and even if the key isn’t in.
To turn off the flashers, press the button until the first
click and release.
When the hazard warning flashers are
on, your turn
signals won’t work. The flashers will stop if you step
on the brake.
5-2
ProCarManuals.com
Page 189 of 358

Other Warning Devices
If you carry reflective triangles, you can set one up at
the side of the road about
300 feet (100 m) behind your
vehicle.
Jump Starting
If your battery has run down, you may want to use
another vehicle and some jumper cables to start your
vehicle. But please use the following steps
to do it safely.
1 NOTICE:
Ignoring these steps could result in costly
damage to your vehicle that wouldn’t be
covered by your warranty.
Do not try to start your vehicle by pushing or
pulling it. This could damage your vehicle and
it won’t start that way.
~~
If the other system isn’t a 12-volt system with a
negative ground, both vehicles can be damaged.
Batteries can
hurt you. They can be dangerous
because:
They contain acid that can burn you.
They contain gas that can explode or ignite.
They contain enough electricity to burn
If you don’t follow these steps exactly, some or all
of these things can hurt you.
you.
1. Check the
other vehicle. It must have a 12-volt
battery with a negative ground system.
I NOTICE:
5-3
ProCarManuals.com
Page 190 of 358

2. Get the vehicles close enough so the jumper cables
can reach, but be sure the vehicles aren’t touching
each other. If they are, it could cause a ground
connection you don’t want. You wouldn’t be able
to start your vehicle, and the bad grounding could
damage the electrical systems.
You could be injured if the vehicles roll. Set the
parking brake firmly on each vehicle. Put an
automatic transmission in
PARK (P). Put a
manual transmission in NEUTRAL (N).
I unnecessary accessories plugged into the cigarette
lighter, or accessory power outlets, if you have this
option. Turn
off all lamps that aren’t needed as well
as radios. This will avoid sparks and help to save
both batteries. In addition, it could save your radio!
3. Turn off the ignition on both vehicles. Unplug
NOTICE:
If you leave your radio on, it could be badly
damaged. The repair wouldn’t be covered by
your warranty.
An electric fan can start up even when the engine
is not running and can injure you. Keep hands,
clothing and tools away from any underhood
electric fan.
I ‘ 5-4
ProCarManuals.com
Page 191 of 358

4. Open both hoods and locate the batteries. Find
the positive
(+) and negative (-) terminals on
each battery.
Using a match near a battery can cause battery
gas to explode. People have been hurt doing this,
and some have been blinded. Use a flashlight
if‘
you need more light.
Be sure the battery has enough water. You
don’t need to add water to the Delco Freedom@
battery installed in every new
GM vehicle. But
if a battery has filler caps, be sure the right
amount of fluid is there.
If it is low, add water
to take care
of that first. If you don’t, explosive
gas could be present.
Battery fluid contains acid that can burn you.
Don’t get it on you.
If you accidentally get it in
your eyes or on your skin, flush the place with
water and get medical help immediately.
5. Check that the jumper cables don’t have loose or
missing insulation.
If they do, you could get a shock.
The vehicles could be damaged too.
Before you connect the cables, here are some basic
things
you should know. Positive (+) will go to
positive (+) and negative (-) will go to an unpainted
metal engine part
or a body metal surfice. Don’t
connect positive
(+) to negative (-j or you’ll get a
short that would damage the battery and maybe other
parts too. And don‘t connect the negative
(-) to
negative
(-).
6. Connect the I-ed
positive
(+) cable to the
positive
(+) terminal
of the vehicle with the
dead battery.
5-5
ProCarManuals.com
Page 192 of 358

7. Don’t let the other
end touch metal.
Connect
it to the
positive
(+) terminal
of the good battery.
8. Now connect the black
negative
(-) cable to
the good battery’s
negative
(-) terminal.
Don‘t let the other end
touch anything
until the
next step. The other end
of the negative cable
doesn’t go to the dead
battery. It goes to a heavy
unpainted metal part on
the engine of the vehicle
with the dead battery.
9. Attach the cable at
least
18 inches (45 cm)
away from the dead
battery, but not near
engine parts that move.
The electrical
connection is
just
as good there, but
the chance
of sparks
getting back to the
battery
is much less.
10. Now start the vehicle with the good battery and
run the engine for
a while.
11. Try to start the vehicle with the dead battery.
If it won’t start after a few tries, make sure all
connections are good.
If it still won’t start, it
probably needs service.
A CAUTION:
Fans or other moving engine parts can injure you
badly. Keep your hands away from moving parts
once the engines are running.
5-6
ProCarManuals.com