check engine Oldsmobile Aurora 1998 s Service Manual

I Maintenance Schedule I
75,000 Miles (125 000 km)
0 Check Oil Life Monitor. If engine oil and filter are changed, reset monitor.
See “Engine Oil” in the Index.
An Emission Control Service. (See footnote *.)
(See footnote #.)
rotation pattern and additional information. (See footnote +.)
I7 Lubricate chassis components (or at each engine oil and filter change).
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
82,500 Miles (137 500 km)
Check Oil Life Monitor. If engine oil and filter are changed, reset monitor.
See “Engine Oil” in the Index.
An Emission Control Sewice. (See footnote *.)
0 Lubricate chassis components (or at each engine oil and filter change).
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
(See footnote
#.)
rotation pattern and additional information. (See footnote +.)
90,000 Miles (150 000 km)
0 Check Oil Life Monitor.
If engine oil and filter are changed, reset monitor.
See “Engine Oil” in the Index.
An Emission Control Service. (See footnote *.)
DATE
DATE
I
MILEAGE
(Continued)
7-11

Maintenance Schedule
90,000 Miles (150 000 km) (Continued)
0
0
Lubricate chassis components (or at each engine oil and filter change).
(See footnote
#.)
Inspect throttle body bore and valve plates for deposits, open the throttle valve
and inspect all surfaces. Clean
as required.
An Emission Control Service. (See footnotej-.)
Replace air cleaner filter.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
for any damage. Replace parts as needed.
An Emission Control Service. (See footnote-)-.)
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information. (See footnote
+.)
97,500 Miles (162 500 km)
0 Check Oil Life Monitor. If engine oil and filter are changed, reset monitor.
See “Engine Oil” in
the Index.
An Emission Control Service. (See footnote *.)
0 Lubricate chassis components (or at each engine oil and filter change).
(See footnote
#.)
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information. (See footnote
+.)
DATE I
7-12

Part B: Owner Checks and Services
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 any fluids or lubricants are added to your
vehicle, make sure they
are the proper ones, as shown
in
Part D.
At Each Fuel Fill
It is important for you or a service station attendant to
peq5orm these underhood checks at each
fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. See “Engine Oil” in the Index for
further details.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOL@
coolant mixture if necessary. See “Engine Coolant” in
the Index for further details.
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the
windshield washer tank and add the proper fluid if
necessary. See “Windshield Washer Fluid” in the
Index for further details.
At Least Once a Month
Tire Inflation Check
Make sure tires are inflated to the correct pressures.
See “Tires” in the Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See “Audio Systems” in the
Index for further details.
Power Antenna Service
Clean power antenna mast. See “Audio Systems” in
the Index for further details.

Starter Switch Check Brake-Transaxle Shift Interlock (BTSI) Check
A CAUTION:
When you are doing this check, the vehicle could
move suddenly.
If it does, you or others could be
injured. Follow the steps below.
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.
should work only in PARK
(P) or NEUTRAL (N). If
the starter works in any other position, your vehicle
needs service.
3. Try to start the engine in each gear. The starter
r
When you are doing this check, the vehicle could
move suddenly.
If it does, you or others could be
injured. Follow the steps below.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on
a
level surface.
2. Firmly apply the parking brake (see “Parking Brake”
in the Index if necessary).
NOTE: Be ready to apply the regular brake
immediately if the vehicle begins to move.
3. With the engine off, turn the key to the RUN
position, but don’t start the engine. Without
applying
the regular brake, try to move the shift
lever out
of PARK (P) with normal effort. If the
shift lever moves out of
PARK (P), your vehicle’s
BTSI needs service.
7-16 ~

Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
The key should turn to LOCK only when the shift
The key should come out only in LOCK.
lever
is in PARK (P).
Parking Brake and Automatic Transaxle PARK (P)
Mechanism Check
A CAb I’ION:
When you are doing this check, your vehicle
could begin
to move. You or others could be
injured and property could be damaged. Make
sure there
is room in front of your vehicle in case
it begins to roll. Be ready to apply the regular
brake at once should the vehicle begin to move.
Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set
the parking brake.
e
a
To check the parking brake’s holding ability: With
the engine running and transaxle
in NEUTRAL (N),
slowly remove foot pressure from the regular brake
pedal.
Do this until the vehicle is held by the parking
brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK (P). Then
release all brakes.
Underbody Flushing Service
At least every spring, use plain water to flush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other
debris can collect.

1998 OLDSMOBILE SERVICE PUBLICATIONS ORDERING INFORMATION
The following publications covering the operation and servicing of your vehicle can be purchased by filling out
the Service Publication Order Form in this book and mailing it in with your check, money order,
or credit card information to Helm, Incorporated (address below.)
CURRENT PUBLICATIONS FOR 1998 OLDSMOBILE
SERVICE MANUALS
Service Manuals have the diagnosis and repair information
on engines, transmission, axle, suspension, brakes,
electrical, steering, body, etc. RETAIL SELL PRICE:
$90.00
TRANSMISSION, TRANSAXLE, TRANSFER CASE UNIT REPAIR MANUAL
This manual provides information on unit repair service
procedures, adjustments and specifications for the
1998 GM transmissions, transaxles and transfer cases.
RETAIL SELL PRICE:
$40.00
SERVICE BULLETINS
Service Bulletins give technical service information needed
to knowledgeably service General Motors cars and trucks.
Each bulletin contains instructions to assist in the
diagnosis and service of your vehicle.
PLEASE COMPLETE THE ORDER FORM SHOWN ON
THE FOLLOWING PAGE AND MAIL TO:
Helm, Incorporated PO. Box 07130 Detroit, MI 48207
OWNER’S INFORMATION
Owner publications are written directly for Owners and
intended to provide basic operational information about the
vehicle. The owner’s manual will include the Maintenance
Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner’s Manual and
Warranty Booklet.
RETAIL SELL PRICE: $1
5.00
Without Portfolio: Owner’s Manual only. RETAIL SELL PRICE: $10.00
CURRENT & PAST MODEL ORDER FORMS
Service Publications are available for current and past
model GM vehicles.
To request an order form, please
specify year and model name of the vehicle.
OR ORDER TOLL FREE: 1-800-782-4356
Monday-Friday 8:OO AM - 6:OO PM Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover)

Battery Voltage Message ......................... 2-77
BBB Auto Line
................................. 8-7
Belt. Engine Accessory
.......................... 6-72
Better Business Bureau Mediation
................... 8-7
Blizzard
...................................... 4-27
Brake Adjustment
.................................. 6-30
Fluid
....................................... 6-28
Master Cylinder
.............................. 6-28
Parkmg
..................................... 2-27
PedalTravel
................................. 6-30
Replacing System Parts
........................ 6-3 1
System Warning Light
......................... 2-66
Trailer
...................................... 4-34
Transaxle Shift Interlock Check
.................. 7- 16
Wear
....................................... 6-30
Brakes. Anti-Lock
............................... 4-7
Braking
........................................ 4-6
Braking in Emergencies
.......................... 4-10
Break-In. New Vehicle
.......................... 2- 19
Brightness Control
.............................. 2-45
BTSICheck
................................... 7-16
Bulb Replacement
.............................. 6-33
Exterior Front
................................ 6-33
Exterior Rear
................................ 6-38
Interior Lamps
............................... 6-42
Canadian Roadside Assistance
.................... 8-6
Capacities and Specifications
...................... 6-70
Carbon Monoxide
.......... 2- 15. 2.3 1.2.32.4.28. 4.34 Cassette
Deck Service
........................... 7-14
Cassette Tape Player
............................ 3-14
Care
....................................... 3-25
Errors
...................................... 3-14
Cellular Telephone
.............................. 2-55
Center Passenger Position ........................ 1-32
Central Door Unlocking System
.................... 2-5
Certification Label .............................. 4-30
Chains. Safety
................................. 4-34
Chains. Tire
................................... 6-50
Change Oil Soon Message
........................ 2-78
Changing a Flat Tire
............................. 5-24
Check Oil Level Warning
......................... 2-79
Checking Your Restraint Systems
.................. 1-51
Chemical Paint Spotting
.......................... 6-57
Child Restraints ................................ 1-37
Securing in a Rear Outside Seat Position
........... 1-42
Securing in the Center Rear Seat Position
.......... 1-44
Securing in the Right Front Seat Position
.......... 1-46
TopStrap
................................... 1-42
WheretoPut
................................ 1-41
Cigarette Lighter
............................... 2-54
Circuit Breakers and Fuses
....................... 6-61
Cleaner. Air
................................... 6-15
Cleaning Aluminum or Chrome Wheels
................... 6-56
Fabric
...................................... 6-52
Glass
....................................... 6-54
Inside of
Your Vehicle ......................... 6-51
Instrumentpanel
............................. 6-53
Leather
..................................... 6-53
9-2

Driving City
........................................ 4-20
Defensive
.................................... 4-2
Drunken
..................................... 4-3
Freeway
.................................... 4-21
InaBlizzard
................................. 4-27
IntheRain
.................................. 4-17
OnCurves
.................................. 4-11
On Grades While Towing a Trailer
............... 4-36
On Hill and Mountain Roads
.................... 4-23
On Snow
or Ice .............................. 4-26
Throughwater
............................... 4-19
WetRoads .................................. 4-17
Winter
...................................... 4-25
With a Trailer
................................ 4-35
DrunkenDriving
................................ 4-3
Night
...................................... 4-16
Elapsed Time Indicator
......................... 2-80
Electrical Equipment. Adding ........... 2.22. 3.25. 6-60
Electrical System
............................... 6-60
Electrochromic Daymight Rearview Mirror
.......... 2-48
Electronic Climate Control
........................ 3-2
Electronic Level Control
......................... 4-3 1
Engine ....................................... 6-10
Accessory Belt
............................... 6-72
Coolant
..................................... 6-21
Coolant Heater
............................... 2-23
Coolant Level Check
.......................... 7- 14
Coolant Temperature Gage
..................... 2-70
Exhaust
..................................... 2-31 Fuse Blocks
................................. 6-69
Identification
................................ 6-59
OilLevelCheck .............................. 7-14
Overheating
................................. 5-14
Running While Parked
......................... 2-32
Specifications
................................ 6-71
Starting Your
................................ 2-21
Engine Message (DIC)
........................... 2-77
EngineOil
.................................... 6-11
Adding
..................................... 6-11
Additives
................................... 6-14
Checlung
................................... 6-11
Life Monitor ................................. 2-78
Pressure Light
............................... 2-73
Used
....................................... 6-14
Whentochange
.............................. 6-14
Estimated Time
of Arrival ........................ 2-79
Exhaust, Engine
................................ 2-31
Exit Lighting
.................................. 2-46
Express-Down Window
.......................... 2-33
Fabric Cleaning
............................... 6-52
Fan Knob. Climate Control System
.................. 3-3
Filling Your Tank ................................ 6-5
Filter. Air
..................................... 6-17
Finish Care
.................................... 6-55
Finish Damage
................................. 6-57
First Gear. Automatic Transaxle
................... 2-26
Flashers. Hazard Warning
......................... 5-2
Flash-To-Pass Feature ........................... 2-37
Flat Tire. Changing
............................. 5-24
9-4

Fluid Capacities ................................ 6-70
FogLamps
.................................... 2-43
Foreign Countries. Fuel
........................... 6-5
Front Storage Armrest
........................... 2-52
Fluids and Lubricants
............................ 7-20
FrenchLanguage Manual
11
FrontTowing .................................. 5-11
Fuel
.......................................... 6-3
Canada
...................................... 6-3
Door Release Button
........................... 6-6
Filling a Portable Container
...................... 6-8
Filling Your Tank
.............................. 6-5
Gage
....................................... 2-74
In Foreign Countries
........................... 6-5
RangeDisplay
............................... 2-77
UsedDisplay
................................ 2-77
Used Reset. Driver Information Center
............ 2-77
Fuses and Circuit Breakers
....................... 6-61
.. ...........................
Gages
Engine Coolant Temperature
.................... 2-70
Fuel
....................................... 2-74
Garage Door Opener
............................ 2-56
GarmentHook
................................. 2-55
GloveBox
.................................... 2-52
Gross Axle Weight Rating
........................ 4-30
Gross Vehicle Weight Rating
...................... 4-30
Guide en Frangais
11
GAWR ....................................... 4-30
.. .................................
GVWR ....................................... 4-30 Halogen
Bulbs
................................ 6-33
Hazard Warning Flashers
.......................... 5-2
Head Restraints
................................. 1-7
Headlamps
............................... 2-36, 2-42
Aiming
..................................... 6-36
Bulb Replacement
............................ 6-33
Wiring
..................................... 6-60
High/Low Beam Changer ...................... 2-37
Hearing Impaired. Customer Assistance
.............. 8-4
Heated Outside Mirror
........................... 2-52
Heatedseats
.................................... 1-5
Heating ........................................ 3-7
High-Beam Headlamps
.......................... 2-37
Highway Hypnosis
.............................. 4-23
Hill and Mountain Roads
......................... 4-23
Hitches. Trailer
................................. 4-34
Hood Checking Things Under
......................... 6-8
Release
...................................... 6-9
Horn
......................................... 2-33
Hydroplaning
.................................. 4-19
Ignition Positions
.............................. 2-20
Ignition Transaxle Lock Check
.................... 7-17
Illuminated Entry
............................... 2-46
Inadvertent Load Protection
....................... 2-48
Inflation. Tire
.................................. 6-44
Inspections
.................................... 7-18
Brakesystem
................................ 7-19
Engine Cooling System ........................ 7-18

Exhaust Systems ............................. 7- 18
Front-Wheel-Drive Axle Boot and Seal
........... 7- 18
Steering
.................................... 7-18
Suspension
.................................. 7-18
Throttle System
.............................. 7- 19
InstrumentPanel ............................... 2-60
Brightness Control
............................ 2-45
Cleaning
.................................... 6-53
Cluster
..................................... 2-62
FuseBlock
.................................. 6-62
Interior Lamps
................................. 2-45
Bulb Replacement
............................ 6-42
.................................... J ack. Tire 5-26
Jump Starting
................................... 5-3
Key Lock Cylinders Service ..................... 7-15
Key Reminder Warning .......................... 2-21
Keyless Entry
................................... 2-9
Keys
.......................................... 2-2
Labels Certification
................................. 4-30
Service Parts Identification
..................... 6-59
Tire-Loading Information
...................... 4-29
Vehicle Identification Number
................... 6-59
Lamps
........................................ 2-42
Cornering
................................... 2-44
Courtesy
.................................... 2-45
Interior
..................................... 2-45 OnReminder
................................ 2-36
Panel
....................................... 2-45
Leaving Your Vehicle
............................. 2-9
Level Control. Electronic
......................... 4-31
Light Sensor. Twilight Sentinel
.................... 2-44
Lighter ....................................... 2-54
Lights Air Bag Readiness
....................... 1-22. 2-65
Battery Warning
.............................. 2-66
Brake System Warning
......................... 2-66
Engine Oil Pressure Light
...................... 2-73
Interior
..................................... 2-45
Parking Brake Indicator
........................ 2-67
Safety Belt Reminder
...................... 1.8. 2.65
Service Engine Soon
.......................... 2-71
Traction Active
................................ 4-9
Traction Control System Active
.............. 2.69. 4.9
Traction Off Warning
........................... 4-9
Loading Your Vehicle
........................... 4-29
Anti-Lockout Feature
.......................... 2-9
Automatic Door
............................... 2-5
Cylinders ................................... 7-15
DelayedLocking .............................. 2-6
Door
........................................ 2-4
Ignition Transaxle Lock Check
.................. 7-17
Key Lock Cylinder Service
..................... 7-15
Memory Door ............................ 2.5. 2.11
PowerDoor
.................................. 2-5
Leaving Your Vehicle with the Engine Running ....... 2-29
Anti-Lock Brake System Warning
............ 2.68. 4.7
Traction Control System Warning
............ 2.68. 4.9
Locks
......................................... 2-4