1993 BUICK SKYLARK ECO mode

Adjustable Ride Control System
(Option)
adjusts to a medium ride.
0 Sport - This provides a firm, sporty ride with
This suspension system option allows the driver to
adjust the ride comfort according to road conditions.
To select a ride comfort option, push one of these three
1 buttons:
i Soft - This provides a smooth, comfortable ride.
0 Auto - This setting automatically adjusts the system.
While traveling at speeds under
47 mph (75 km/h),
the system will adjust to the soft ride. Traveling at
speeds faster than
47 mph (75 km/h) the system
responsive handling and cQrnering.
When Auto or
Soft is selected, the system begins in the
Sport mode. It will also automatically change back to
the Sport mode when the vehicle _---lkes anabrupt start,
stop or a sharp turn.
The indicator lights for all the buttons will come on for about
5 seconds after the ignition is started as a system
check.
If all the indicator lights come on and stay on,
there may be a problem.
You should have your vehicle
inspected.

Step 7. Rotate the TUNE knob right or left to make the
next two numbers agree with your code.
Step
8. Press the BAND AM-FM Knob and “000” will
appear. Now you are ready to enter the second
three
digits of your code.
Step
9. Repeat steps 6 and 7 to enter digits.
Step
10. Press the AM-FM knob and “REP” will appear
for
5 seconds and then “000” will appear.
Step
11. Repeat steps 6 through 10. This time“SEC”
should appear indicating that the radio is secure.
If the
display shows
“ - - - ” , the verification steps .were not
successful and the entire sequence must be started again.
To Unlock The System After a Power Loss
When battery power is reapplied to a secured radio, the
radio won’t turn on and
“LOC” will appear in the
display.
Enter your secret code as follows; pause no more than
15 seconds between steps.
Step
1. Turn the ignition ON. (Radio off.)
Step
2. Press the SET button. The display will show
“000”.
Step 3. Enter the six digits of the code following steps 6
thru 9 as previously indicated. The display will show the
number as entered.
Step
4. Press the AM/FM button and the time appears -
indicating that the disabling sequence was successful. If
the display indicates “SEC ”, the number did not match
and the unit is still secured.
Disabling The Theft System
Step 1. Press preset buttons 1 and 4 for 5 seconds with
the ignition
ON and radio power OFF. The display will
show,“SEC”
, indicating the unit is in the secure mode.
Step
2. Press the SET button. The display will show
“000”.
Step 3. Enter the first three digits of the code following
steps
6 and 7 of the preceding directions. The display
will show the numbers as entered.
Step
4. Press the AM-FM button. The radio will display
“000”.
atep 5. Enter the second three digits of the code. The
display will show the numbers as entered.
Step
6. Press the AM-FM button. If the display shows
- - - ” , the disabling sequence was successful. (The
numbers matched the user-selected code or the factory 66

back-up code) and the unit is in the UNSECURED
mode. If the display shows"SEC", the disabling
sequence was.unsuccessfu1 and the numbers did not
match either of the codes and the unit will remain in the
SECURED mode.
Care of Your Cassette Tape Player
Your tapes will sound best if you clean your cassette
tape player from time to time. Use a non-abrasive
cleaning cassette instead of a music tape. Follow the
instructions on the cleaning cassette.
Store cassette tapes away from extreme heat or direct
sunlight. Protect the open ends from dirt or damage;
store them in their original cases or other protective
cases. Cassettes eventually wear out and you may need
to replace them if they become noisy.
Care of Your Compact Discs
Handle discs carefully. Store them in their original cases
or other protective cases and away from direct sunlight
and dust.
If the surface of a disc is soiled, dampen a
clean, soft cloth in a mild, neutral detergent solution and
clean it, wiping from the center to the edge.
Be sure never to touch the signal surface when handling
discs. Pick up discs by grasping the outer edges or the
edge of the hole and the outer edee.
133

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 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.
Battery
Every new Buick has a Delco Freedoms battery. You
never have to add water to one
of these. Whenit’s time
for a new battery, we recommend
a Delco Freedoms
battery. Get one that has the catalog number shown on
the original battery’s label.
Vehicle Storage
If you’re not going to drive your vehicle for 25 days or
more, take
off the black, negative (-) cable from the
battery. This will help keep your battery from running
parts in them, as your Buick does when it is new. When
4 A CAUTION:
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
1 Batteries have acid that can burn you and gas
that can explode. You can be badly hurt
if you
aren’t careful. See “Jump Starting” in the Index
for tips on working around a battery without
getting hurt.
237

Inspect hoses and replace if they are cracked,
swollen or deteriorated. Tighten screw-type hose
clamps. Clean the outside of the~radiator and air
conditioning condenser. Wash the pressure cap and
neck.
To help ensure proper operation, we recommend a
pressure test
of both the cooling system and the
pressure cap.
7. Transaxle Service -- Change both the fluid and
filter every
15,000 miles (25 000 km) if the vehicle
is mainly driven under one or more of these
conditions:
0 In heavy city traffic where the outside
temperature regularly reaches
90 F (32 C) or
higher.
0 In hilly or mountainous terrain.
When doing frequent trailer towing. (With some
models, you shouldn’t ever tow a trailer. See
“Towing a Trailer” in the Index.)
Uses such as found in taxi, police car or delivery
service. If you
do’ not use your vehicle under any of these
conditions, change both the fluid and filter every
100,000 miles (160 000 km).
8. Spark Plug Replacement* -- Replace spark plugs
with the proper type. See “Specifications Chart” in
the Index.
9. Spark Plug Wire Inspection (3.3L Code N engine
only)*?
-- Inspect for burns, cracks or other
damage. Check the boot fit at the coils and at the
spark plugs. Replace wires as needed.
10. Air Cleaner Filter Replacement* -- Replace every
30,000 miles
(50 000 km) or more often under dusty
conditions. Ask your dealer for the proper
replacement intervals for your driving conditions.
11. Fuel Tank, Cap and Lines Inspection”? -- Inspect
fuel
tank, cap and lines (including fuel rails and
injection assembly) for damage or leaks. Inspect fuel
cap gasket for an even filler neck imprint or any
damage. Replace parts as needed. Periodic
replacement of the fuel filter is not required.
* An Emission Control Service.
The
U.S. Environmental Protection Agency has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of vehicle
useful life. General Motors, however, urges that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded in “Section EMaintenance Record”.