light Oldsmobile Cutlass Supreme 1994 s Workshop Manual

NOTICE:
If you use an improper coolant mix,
your engine could overheat and be
badly damaged. The repair cost
wouldn’t be covered by your
warranty.
Too much water in the
mix can freeze and crack the
engine, radiator, heater core and other parts.
Adding Coolant
To Check Coolant
When your engine is cold, the coolant
level should be at the
COLD mark or a
little higher. When your engine is warm,
the level should be up to the
HOT mark
or a little higher.
1 SECURITY I
P
w OIL LOW
EVEL COOLANT I
If this light comes on, it means you’re
low on engine coolant.
To Add Coolant
If you need more coolant, add the
proper mix
at the coolant recovery
tank.
If the coolant recovery tank is
completely empty, add coolant to the
radiator. (See
Engine Overheating in
the
Index.)
191

are worn, then you'll have. too much
ff uid when you get new brake linings.
YOU should add (or remove) brake
fluid, as necessary, only when work is
done
on the brake hydraulic system.
194
When your brake fldd falls to a low
level, your brake warning light will
come on. See
Brake Syste-m Warning
Light in the Index.
What to Add
When you do need brake fluid, use o.nly
DOT-3 brake fluid - such as Delco
Supreme
11s (GM Part No. 1052535).
Use new brake fluid from a sealed
container
only, .and always clean the brake
fluid reservoir cap
before
removing it.
Brake Wear
Your Oldsmobile has four-wheel disc
brakes.
Disc brake pads have builtin wear
indicators that make
a high-pitched
warning sound when the brake pads are
worn and new pads are needed. Be

sound may come and go or be heard all
the time your vehicle is moving (except
when you are pushing
on. the brake
pedal firmly).
NOTICE:
Continuing to drive with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates
may cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean something
is wrong with your brakes.
Brake linings should always be replaced
as complete axle sets.
Brake Pedal Travel-
See your dealer if the brake pedal does
not return to normal height, or if there
is a rapid increase in pedal travel. This
could be a sign
of brake trouble.
Brake Adjustment
Every time you male a moderate brake
stop, your disc brakes adjust for wear. If
you rarely make a mo.derate or heavier
stop, then your brakes might not adjust
correctly.
If you drive in that way, then
- very carefully - make a few
moderate brake stops about every
1,000
miles (1 600 km) , so your brakes will
adjust properly.
Replacing Brake System Parts
The braking system on a modern
vehicle is complex. Its many parts have
to be of top quality and work well
together
if the vehicle is to have really
good braking. Vehicles we design and
test have top-quality
GM brake parts in
them, as your Oldsmobile does when it
is new. When you replace parts of your
braking system
- for example, when
your brake linings wear down and you have
to have new ones put in
- be sure
you get new genuine
GM replacement
parts.
If you don’t, your brakes may no
longer work properly. For example, if
someone puts.in brake linings that are
wrong for your vehicle, the balance
between your front and rear brakes can
change, for the worse; The braking
performance you’ve come to expect can
change in many other ways if someone
puts in the wrong replacement brake
parts.
195

I Hedlight.Airning
This section is for owners of 2-door
Oldsmobiles only. The headlights on
2-
door Oldsmobiles can be checked and
aimed by the owner. If you have a 4-
door Oldsmobile, please see your dealer
when your headlight aim needs to be
headlight on a 4-dOOr Oldsmobile, see
the
Index under Headlight
Replacement.
I checked or adjusted. To replace a
Checking Headlight Aim
(2-DOOR MODELS)
Your vehicle has the 55 x 135 mini-
quad headlight system. These
headlights have horizontal and vertical
aim indicators. The aim has been pre- set at
the factory and should need no
further adjustment.
If your vehicle is damaged in an
accident and the headlight aim seems to
be affected, see your Oldsmobile dealer.
Headlights on damaged vehicles may
require recalibration of the horizontal
aim by your Oldsmobile dealer.
To check the aim, the vehicle should be
properly prepared as follows:
The vehicle must have all four tires on
a perfectly level surface.
The vehicle should not have any
snow, ice, or mud attached to it.
There should not be any cargo or
loading of vehicle, except it should
have a
full tank of gas and one person
or
160 pounds (75 kg) on the driver’s
seat.
Tires should be properly inflated.
The horizontal indicator should read
0 (zero).
197

Service, & Appearance Care
198
NOTICE:
To make sure your headlights are
aimed properly, read all the
instructions before beginning.
Failure to
follow these instructions
could cause damage to headlight
parts.
I
I
I
I
n- /J
Statekpection stations will allow a
vertical reading of up plus
.76 degrees
or down minus
.76 degrees for the
center of the bubble.
It is recommended that the upper limit
not exceed up plus
.4 degrees for the
center
of the bubble. There may be an
increased chance of being flashed
if
adjustment is much above up plus .4
degrees.
Aiming Headlights (2.~00~ MODELS)
1. Start with the horizontal (left and
right) headlight aim. Don’t
try to
adjust the vertical (up and down) aim
first.
headlight and adjust it as necessary.
until the pointer
is lined up with the
0 (zero).
2. Check the horizontal aim for each
3. Turn the horizontal aiming screw

I \I kWl/ I \I \“‘v
4. Now adjust the vertical aim. Check
the vertical aim for each headlight
and adjust it as necessary.
5. Turn the vertical aiming screw until
the bubble in the level is centered at
C
(zero).
To Replace a Headlight
(2-DOOR MODELS)
Before replacing a headlight that does
not light, check to make sure that the
wiring connector is securely fastened to
it.
See the
Index under Replacement
Bulbs
to check the size and type of
headlight you need to use before you
begin to replace the headlight.
You
must replace a headlight with one that
is exactly the same.
1. Pry up the plastic pins and remove
the headlight cover. 2. Remove the Torx@ head screws at the
end
of the aiming ring. The aiming
ring will swing open like a gate.
3. Remove the aiming ring from the
assembly.

Service & Appearance Care
4. Remove the wiring connector fkom
the headlight s~ocltet by lifting the
plastic locking tabs on the connector
and pulling it
from the socket.
5. Check the new headlight again. The
number
on the top of the light (A)
must match the number on the
headIight being replaced. The letter,
U or L, must also match.
5. Plug the wiring connector into the
headlight s-oclcet. Snap the locking
tabs onto the socket.
headlight
assembly. The socket must
be pointing-in the same direction the
socket an the burned-out bulb was.
7. Place the new headlight in the

8. Insert the tabs on the aiming ring
into the slots in the headlight
assembly. 9. Holding the aiming ring closed, insert
the screws at the end of the ring.
Tighten the screws until the aiming
ring touches the plastic nuts on both
the top and bottom.
Do not
overtighten.
Do not damage the
vertical aiming bubble.
To check the aim, the vehicle should be
properly prepared as follows:
The vehicle must have all four tires on
a perfectly level surface.
The vehicle should not have any
snow, ice or mud attached to it.
-
There should not be any cargo or
loading of vehicle, except it should
have a full tank of gas and one person
or
160 pounds (75 kg) on the driver’s
seat.
Tires should be properly inflated.
The horizontal indicator should read
If your vehicle is damaged in an
accident and the headlight aim seems to
be affected, see your Oldsmobile dealer.
Headlights on damaged vehicles may
require recalibration of the horizontal
aim by your Oldsmobile dealer.
0 (zero).
I
201

.. .
.Headlfght Replacement
(4-DOOR MODES)
See thelndm under Replacement
Bulbs
to check thetype of bulb to use.
To Replace a Bulb:
1. Turn the-Lshaped bulb assembly
counterclockwise
M turn until the
flanges-align with the slots
in the
retainer ring,
You may need to twist
it back and
forth slightly to loosen it.
~~~~~~
2. Pull out the bulb assembly.
3. Disconnect the bulb wiring harness
from the socket bulb assembly by
.lifting the plastic locking tab.
4. Snap. a new bulb assembly into the
wiring harness.
-5. Replace the bulb .assembly by
reversing step one.
Taill[ght Bulb Replacement
(2-DOOR MODES)
For the type of bulb, see the Index
under Replacement Bulbs.
1. Remove the two large plastic Screws
and pull the carpet away from the
rear corner of the trunk.

2. Press the bulb housing release lever
and turn the housing
M turn
countercloclnvise to remove it.
3. To remove the bulb, pull it from the
4. Push in a new bulb.
5. Reverse all steps to reassemble the
taillight housing.
assembly.
Taillighf Bulb Replacement
(4-DOOR MODELS)
For
the type of bulb, see the Index
under Replacement Bulbs.
1. Remove the two large plastic screws
and pull the carpet away
from the
rear corner of the trunk.
203