1993 BUICK SKYLARK service

Scheduled Maintenance Services Schedule I1
Follow Schedule I1 ONLY if none of the driving conditions specified in Schedile I apply.
TO BE SERVICED
(See Explanation of
Scheduled Maintenance Services Following Schedules
I and 11)
Item No.
WHEN TO PERFORM
Miles (kilometers) or Months, Whichever Occurs First
MILES (000)
KILOMETERS (000)
12.5 I 25 I 37.5 I 50 I 62.5 I 75
1. Engine Oil Change* Every 7 500 mi. (12 500 km) or 12 mos. e e
Oil Filter Change* At first and then every other oil change 0
2. Chassis Lubrication
Every 7 500 mi. (12 500.-km) or 12 mos. e e
3. Throttle Body Mounting Bolt Torque*
At 7 500 mi. ( 12 500 km). only e
4. Tire & Wheel Inspection & Rotation
I
At 7 500 mi. (12 500 km) and then every
15
000 mi. (25 000 km) or as necessary
5. Engine Accessory Drive Belt(s) Inspection*
6. Cooling System Service* Every
30
000 mi. (50 000 km) or 24 mos.
272
I

TO BE SERVICED
(See Explanation of
Scheduled Maintenance
Services Following
Schedules
I and II)
Item No.
7. Transaxle Service
8. Spark Plug Replacement*
9. Spark Plug Wire Inspection*?
10. Air Cleaner Filter Replacement*
11. Fuel Tank, Cau & Lines Inspection"?
WHEN TO PERFORM
Miles (kilometers) or Months, Whichever Occurs First
MILES (000)
KILOMETERS (000)
See Explanation of Scheduled Maintenance
Services Following Schedules I and
II II I 1.1 I
I I I 1.1 I
0
i Every 30 000 mi. (50 000 km) 0
0
~~
The services shown in this schedule up to 45 000 miles (75 000 km) should be performed after 45 000 miles at the Same
intervals.
I

Explanation of Scheduled Maintenance equipped with grease fittings, lubricate the
Services suspension and steering linkage.
Below are explanations
of the services listed in $chediie ‘ ‘ 3. Throttle Body Mounting; Bolt Torque (3.3L Code . , I:
I and Schedule 11.
The proper fluids and lubricants to use are listed in
Section
D. Make sure whoever services your vehicle
uses these. All parts should be replaced and all
necessary repairs done before you or anyone else drives
the vehicle.
NOTE:
To determine your engine’s displacement and
code, see “Engine 1dentific.ation” in the Index.
1. Engine Oil and Filter Change* -- Always use SG
Energy Conserving
I1 oils of proper viscosity. The
“SG, designation may be shown alone or in
combination with others, such as “SG/CC”,
“SG/CD” or “SF,
SG, CC,” etc. To determine the
preferred viscosity for your vehicle’s engine (e.g.,
SAE 5W-30 or SAE 10W-30), see “Engine Oil” in
the Index.
2. Chassis Lubrication -- Lubricate the transaxle shift
linkage, parking brake cable guides, underbody
contact points and linkage. If your vehicle is
An Emission Control Service.
N engine only)* -- Che& the torque of the
mounting bolts and/or nuts.
proper wear and maximum tire life, rotate your tires
following the instructions in this manual. See “Tires,
Inspection
& Rotation” in the Index, Check the tires
for uneven wear or damage. If you see irregular or
premature wear, check
the wheel alignment. Check
for damaged wheels also.
5. Engine Accessory Drive Belt@) Inspection --
Inspect the belt(s) for cracks, fraying, wear and
proper tension. Replace as needed.
6. Cooling System Service* -- Drain, flush and refill
the system with new or approved recycled coolant
conforming to GM Specification 1825M. Keep
coolant at the proper mixture as specified. See
“Coolant” in the Index. This provides proper freeze
protection, corrosion inhibitor level and engine operating temperature.
4. Tire and Wheel Rotation and Inspection -- For
The U.S. Environmental Protection Agency has determined that the failure to perform this maintenance item will not nullify the emission war\
ranty 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 i\
ntervals and the maintenance be recorded in “Section EMaintenance Record”.
274

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”.

Section €5: Owner Checks and
Services
I Listed below are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever anv fluids or lubricants are added to vour
At Each Fuel Fill
(It is important for you or a service station attendant
to perform these underhood checks at each fuel
fill.)
CHECK OR
I SERVICE I WHAT TO DO
Engine Oil Check the engine oil level and add
Level the proper oil if necessary. See
“Engine
Oil“ in the Index for further .r .I
vehicle, make sure they are the proper ones, as shown in details.
Section D. Engine Coolant Check the engine coolant level in the
Level surge tank and add the proper
coolant mix
if necessary. See
“Coolant” in the Index for further
details.
Windshield Check the windshield washer fluid
Washer Fluid level in the windshield washer tank
Level and add the proper fluid
if necessary.
See “Windshield Washer Fluid” in
the Index for further details.

At Least Once A Month
CHECK OR SERVICE
Tire Inflation
WHAT TO DO
Check tire inflation. Make sure they
are inflated to the pressures specified
on the Tire-Loading Information
label located on the rear edge of the
driver’s door. See “Tires” in the
Index for further details.
At Least Once A Year
CHECK OR
SERVICE
I WHAT TO DO
Key Lock
Lubricate all body door hinges. Also
Body the
lubricant specified in Section
D. Cylinders Lubricate the
key lock cylinders with
Lubrication lubricate all hinges and latches,
including those for the hood, glove
box door and console door. Section
D tells you what to use.
CHECK OR
SERVICE
Starter Switch
WHAT TO DO
kAUTION: When you are
doing this check, the vehicle
could move suddenly.
If it
does, you or others could be
injured. Follow the steps
bellow.
- 1
1. Before you start, be sure you have
enough room around the vehicle.
2. Firmly apply both the parking brake
(see “Parking Brake” in the Index if
necessary) and the regular brake.
NOTE:
Do not use the accelerator
pedal, and be ready to
turn off the
engine immediately if it starts.
3. Try to start the engine in each gear.
The starter should work only in
“P’
(Park) or “N” (Neutral). If the starter
works in any other position, your
vehicle needs service.
277

INSPECTION
OR SERVICE
Steering,
Suspension and
Front-Wheel-
Drive Axle
Boot and Seal
Inspection
Exhaust System
Inspection
Throttle
Linkage Inspection
WHAT SHOULD BE DONE
hspect the front and rear suspension
and steering system for damaged,
loose or missing parts, signs of wear,
or lack of lubrication. Inspect the
power steering lines and hoses for
proper hookup, binding, leaks, cracks, chafing, etc. Clean and then
inspect the drive axle boot seals for
damage, tears or leakage. Replace
seals
if necessary.
Inspect the complete exhaust system. Inspect the body near the
exhaust system. Look for broken,
damaged, missing or out-of-position
parts as well as open seams, holes,
loose connections,
or other
conditions which could cause a heat
build-up in the floor pan or could let
exhaust fumes into the vehicle. See
“Engine Exhaust” in the Index.
Inspect the throttle linkage for interference or binding, and for
damaged or missing parts. Replace
parts as needed.
“:
INSPECTION
OR SERVICE
Brake System
Inspection
WHAT SHOULD BE DONE
Inspect the complete system. Inspect
brake
lines and hoses for proper
hookup, binding, leaks, cracks, chafing,
etc.
Inspect disc brake pads for wear
and rotors for swrface condition.
Also
inspect Qwn brake linings for wear and
cracks. Inspect other brake
parts
including drums, wheel cylinders,
calipers parking brake, etc. The parking
brake is self-adjusting and no manual adjustment
is required. You may need
to have your brakes inspected more often
if your driving habits or
conditions result in frequent braking.
NOTE: A low brake fluid level can
indicate worn disc brake pads which
may
need to be serviced. Also, if the
brake system warning light stays on or
comes on, something may
be wrong
with the brake system. See “Brake System
Warning Light” in the Index. If
your anti-lock brake system warning
light stays
on, comes on or flashes,
something may
be wrong with the
anti-lock brake system. See “Anti-Lock
Brake System Warning Light”
in the
Index.
280 .~ . ~

Section D: Recommended Fluids and
Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from your
GM dealer.
USAGE
Engine Oil
Engine Coolant
FLUID/LUBRICANT
GM Goodwrench Motor Oil or
equivalent for API service SG
Energy Conserving I1 oils of the
proper viscosity. The
“SG’
designation may be shown alone or
in combination with others, such as
“SGICC,”
66~~/~~,991 or
“SF,SG,CC,” etc. To determine the
preferred viscosity for your vehicle’s
engine, see “Engine Oil” in the
Index.
50/50 mixture of water (preferably
distilled) and good quality ethylene
glycol base antifreeze (GM Part No.
1052753 or equivalent) conforming
to GM Specification 1825M or
approved recycled coolant
conforming to GM Specification
1825M.
USAGE
Hydraulic Brake
System
Parking Brake
Guides
Power Steering
System
Automatic
Transaxle
Key Lock
Cylinders
Automatic
Transaxle Shift
Linkage
FLUIDlLUBRICANT
~~
Delco Supreme 11 @ Brake Fluid
(GM Part No. 1052535) or
equivalent DOT-3 brake fluid.
Chassis lubricant meeting
requirements of NLGI Grade 2,
Category LB or GC-LB (GM Part
No. 1052497 or equivalent).
GM Hydraulic Power Steering Fluid
(GM Part No. 1052884) or
equivalent.
DEXRON@ IIE Automatic
Transmission Fluid (GM Part
No.
12345881) or equivalent.
Lubricate with Multi-Purpose
Lubricant (GM Part
No. 12345120)’
synthetic
SAE 5W-30 engine oil or
silicone lubricant
(GM Part No.
1052276 or 1052277).
Engine oil.
281