2003 OLDSMOBILE SILHOUETTE service

Highway Hypnosis
Is there actually such a condition as “highway hypnosis”?
Or is it just plain falling asleep at the wheel? Call it
highway hypnosis, lack of awareness, or whatever.
There is something about an easy stretch of road with
the same scenery, along with the hum of the tires on
the road, the drone of the engine, and the rush of
the wind against the vehicle that can make you sleepy.
Don’t let
it happen to you! If it does, your vehicle can
leave the road in
less than a second, and you could
crash and be injured.
What can you do about highway hypnosis?
First, be aware that it can happen.
Then here are some tips:
e
e
e
Make sure your vehicle is well ventilated, with a
comfortably cool interior.
Keep your eyes moving. Scan the road ahead and
to the sides. Check your mirrors and your
instruments frequently.
If you get sleepy, pull
off the road into a rest,
service or parking area and take a nap, get some
exercise, or both. For safety, treat drowsiness
on the highway as an emergency.
Hill and Mountain Roads
Driving on steep hills or mountains is different from
driving in flat or rolling terrain.
4-24

Towing
Towing Your Vehicle
Consult your dealer or a professional towing service
if you need to have your disabled vehicle towed.
See
Roadside Assistance Program on page 9-5.
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 know
as a “dolly”). With the proper preparation
and equipment, many
vehicles 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. See
Before Leaving on a Long Trip on
page
4-23.
4-32

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'll keep going.
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.
Don't leave an unsecured child restraint
in your vehicle.
0 When you carry something inside the
vehicle, secure
it whenever you can.
i3on.i ieave a seai ioiciea ciown uniess
you need to.
Automatic Level Control
On vehicles equipped with the automatic level control,
the rear of the vehicle is automatically kept level as you
load or unload your vehicle. However, you should still
not exceed the GVWR or the GAWR.
If the engine is running or the ignition key is in
ACCESSORY or when Retained Accessory Power (RAP)
is active, you may hear the compressor operating when
you load or unload your vehicle, and periodically as the
system self-adjusts. This is normal. See "Retained
Accessory Power" under
Ignition Positions on page 2-32.
The compressor should operate for brief periods of time.
If the sound continues for an extended period of
time, your vehicle needs service.
Using heavier suspension components to get added
durability might not change your weight ratings. Ask your
dealer to help you load your vehicle the right away.
4-35

Towiv a Trailer
=mm
If you don’t use the correct equipment and
drive properly, you can lose control when you
pull a trailer. For example, if the trailer is too
heavy, the brakes may not work well
-- or even
at all. You and your passengers could be
seriously injured. Pull a trailer only if you have
followed all the steps
in this section. Ask your
dealer for advice and information about towing
a trailer with your vehicle.
Notice: Pulling a trailer improperly can damage
your vehicle and result
in costly repairs not covered
by your warranty. To pull a trailer correctly, follow
the advice
in this part, and see your dealer for
important information about towing a trailer with
your vehicle. Additional rear axle maintenance
is required for a vehicle used to tow a trailer.
See “Scheduled Maintenance Services” in the Index. Your
vehicle can tow a trailer. To identify what the
vehicle trailering capacity
is for your vehicle, you should
read the information in “Weight of the Trailer” that
appears later in this section. But trailering is different
than just driving your vehicle by itself. Trailering means
changes in handling, durability and fuel economy.
Successful, safe trailering takes correct equipment
and
it has to be used properly.
That’s the reason for this section. In
it are many
time-tested, important trailering tips and safety rules.
Many
of these are important for your safety and that of
your passengers.
So please read this section carefully
before you pull a trailer.
Load-pulling components such as the engine, transaxle,
wheel assemblies and tires are forced to work harder
against the drag of the added weight. The engine
is required to operate at relatively higher speeds and
under greater loads, generating extra heat. What’s more,
the trailer adds considerably to wind resistance,
increasing the pulling requirements.
4-36

When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal down
while you:
start your engine,
* shift into a gear, and
* release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the
chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you’re
pulling a trailer. See the Maintenance Schedule for more
on this. Things that are especially important in trailer
operation are automatic transaxle fluid (don’t overfill),
engine
oil, belts, cooling system and brake system.
Each of these is covered in this manual, and the
Index will help you find them quickly.
If you’re trailering,
it’s a good idea to review these sections before you
start your trip.
Check periodically
to see that all hitch nuts and bolts
are tight.
Trailer Wiring Harness
Your vehicle has a trailer wiring harness located at the
rear of your vehicle.
To use the trailer wiring harness
you need a converter kit. Contact your dealer for more
information.
4-43

Section 5 Service and Appearance Care
Service ............................................................ 5.3
Doing Your Own Service Work
......................... 5.3
Adding Equipment to the Outside
of
Your Vehicle .............................................. 5-4
Fuel
.............................................................. -5-5
Gasoline Octane
............................................ 5-5
Gasoline Specifications
................................... 5-5
California Fuel
............................................... 5-6
Additives
....................... .... ......... 5-6
Fuels in Foreign Countries
........... ..... 5-7
Filling Your Tank
............................ ..... 5-7
Filling a Portable Fuel Container
.................... 5-9
Checking Things Under the
Hood .................. -5-1 0
Hood Release .............................................. 5-10
Engine Compartment Overview ....................... 5-12
Engine Oil
................................................... 5-14
Engine Air CleanedFilter
................................ 5-19
Automatic Transaxle Fluid
.............................. 5-20
Radiator Pressure Cap
............................... 5-26
Engine Overheating
.................................... 5-26
Cooling System
............................. , ....... 5-29
Power Steering Fluid .................. , ....... 5-37
Windshield Washer Fluid
................. , ....... 5-38
Brakes
.......................... .... ........ 5-39
r.--.:.-- ---I-.- b CI lyll IC uuvlal I1 4-LU c r)r) .............................................
Battery ........................................................ 5.43
Jump Starting
............................................... 5-44
All-Wheel Drive
.............................................. 5-50
Bulb Replacement .......................................... 5-52
Halogen Bulbs
.............................. ......... 5-52
Front Turn Signal, Sidemarker and
Taillamps, Turn Signal, Stoplamps and
Headlamps
...................................... ..... 5-52
Parking Lamps
.............................. ..... 5-54
Replacement Bulbs
....................................... 5-57
Back-up Lamps
......................................... 5-56
Windshield Wiper Blade Replacement
.............. 5-58
Tires
.............................................................. 5-60
Inflation
- Tire Pressure ................................ 5-61
Tire Inspection and Rotation
........................... 5-62
When It
Is Time for New Tires ....................... 5-63
Buying New Tires
......................................... 5-64
Uniform Tire Quality Grading
.......................... 5-65
Wheel Alignment and Tire Balance
.................. 5-66
Wheel Replacement
...................................... 5-66
Tire Chains
.................................................. 5-67
Accessory Inflator
......................................... 5-68
If a Tire Goes Flat ........................................ 5-69
Changing a Flat Tire ..................................... 5-70
Compact Spare Tire ...................................... 5-86
5- 1

Section 5 Service and Appearance Care
Appearance Care ............................................ 5.87
Care of Safety Belts ...................................... 5-90
Weatherstrips
............................................... 5-90
Sheet Metal Damage
..................................... 5.92
Finish Damage
............................................. 5.92
Underbody Maintenance
................................ 5.93
Chemical Paint Spotting
................................. 5.93
GM Vehicle Care/Appearance Materials
........... 5.93
Cleaning
the Inside
of Your Vehicle ................. 5-87
Cleaning the Outside of Your Vehicle ................. 5-90 Vehicle
Identification
........................ ...... 5.95
Vehicle Identification Number (VIN)
... ...... 5.95
Service Parts Identification Label
... ...... 5.95
Electrical System
.......................... .......... 5.96
Add-on Electrical Equipment
...................... 5.96
Headlamp Wiring
.......................................... 5.96
Windshield Wiper Fuses
................................ 5.96
Power Windows and Other Power Options
....... 5.96
Fuses and Circuit Breakers
............................ 5.96
Capacities and Specifications
........................ 5.103
Normal Maintenance Replacement Parts
......... 5.105
5-2

Service
Your dealer knows your vehicle best and wants you to
be happy with
it. We hope you’ll go to your dealer
for all your service needs. You’ll get genuine GM parts
and GM-trained and supported service people.
We hope you’ll want to keep your GM vehicle all GM.
Genuine GM parts have one
of these marks:
Doing Your Own Service Work
If you want to do some of your own service work, you’ll
want to use the proper service manual. It tells you
much more about how to service your vehicle than this
manual can.
To order the proper service manual,
see
Service Publications Ordering Information on
page 7-10.
Your vehicle has an air bag system. Before attempting
to do your own service work, see
Servicing Your Air
Bag-Equipped Vehicle
on page 1-76.
5-3