1999 CADILLAC CATERA check engine

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6-11
Engine Oil
If the low oil level light on
the instrument panel comes
on, it means you need to
check your engine oil level
right away.
For more information, see ªCHECK OIL lightº in the
Index. You should check your engine oil level regularly;
this is an added reminder.
It's a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil must
be warm and the vehicle must be on level ground.
The engine oil dipstick is
located behind the radiator
hose on the driver's side of
the engine. The yellow
looped handle helps to
identify it.Turn off the engine and give the oil several minutes to
drain back into the oil pan. If you don't, the oil dipstick
might not show the actual level.
Checking Engine Oil
Pull out the dipstick and clean it with a paper towel or
cloth, then push it back in all the way. Remove it again,
keeping the tip down, and check the level.

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6-18
5. Replace the filter by sliding it back in, reattaching
both retaining clips and closing the grille flap.
6. Replace the engine compartment rear seal.
7. Close the engine hood.
For the type of filter to use, see ªNormal Maintenance
Replacement Partsº in the Index.
Automatic Transmission Fluid
It is not necessary to check the transmission fluid level.
A transmission fluid leak is the only reason for fluid
loss. If a leak occurs, take your vehicle to the dealership
service department and have it repaired as soon as
possible. You may also have your fluid level checked by
your dealer or service center when you have your
oil changed.
Change both the fluid and filter every 50,000 miles
(83 000 km) if the vehicle is mainly driven under one or
more of these conditions:

In heavy city traffic where the outside temperature
regularly reaches 90F (32C) or higher.

In hilly or mountainous terrain.

When doing frequent trailer towing.

Uses such as found in taxi, police or delivery service.
If you do not use your vehicle under any of these
conditions, the fluid and filter do not require changing.

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6-22
NOTICE:
If you use an improper coolant mixture, your
engine could overheat and be badly damaged.
The repair cost wouldn't be covered by your
warranty. Too much water in the mixture can
freeze and crack the engine, radiator, heater core
and other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
NOTICE:
If you use the proper coolant, you don't have to
add extra inhibitors or additives which claim to
improve the system. These can be harmful.
Checking Coolant
The surge tank is located behind the air cleaner on the
passenger's side of the engine.
The cooling system when hot is under a lot of pressure.
If the low coolant warning light on the instrument panel
appears, you will need to add coolant.

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6-24
Power Steering Fluid
The power steering fluid reservoir is located between
the battery and the brake master cylinder on the driver's
side of the engine.
When to Check Power Steering Fluid
It is not necessary to regularly check power steering
fluid unless you suspect there is a leak in the system or
you hear an unusual noise. A fluid loss in this system
could indicate a problem. Have the system inspected
and repaired.
How to Check Power Steering Fluid
When the engine compartment is cool, wipe the cap and
the top of the reservoir clean, then unscrew the cap and
wipe the dipstick with a clean rag. Replace the cap and
completely tighten it. Then remove the cap again and
look at the fluid level on the dipstick.
The level should be at the full mark. There are two lines
on the dipstick. The top line is the ªfullº mark and the
bottom line is the ªaddº line (which means that fluid
should be added). If necessary, add only enough fluid to
bring the level up to the full mark.
What to Use
To determine what kind of fluid to use, see
ªRecommended Fluids and Lubricantsº in the
Maintenance Schedule booklet. Always use the proper
fluid. Failure to use the proper fluid can cause leaks and
damage hoses and seals.

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6-62
Fuse/Relay Usage
6 Fan Control Relay (K87)
7 Fan Control Relay (K26)
8 Fuse 50
9 Fan Control Relay (K28)
10 Engine Controls Power Relay (K43)
12 Fuse 40
15 Fuse 52
16 Connector C110
17 Coolant Fan Test Connector
Fan Control
18 Fuse 42 (A), Fuse 49 (B)
19 Fan Control Relay (K52)
20 Fuel Pump Relay (K44)
29 Fuse 43Replacement Bulbs
Application Bulb Number
Composite Headlamps
Inner High Beam 90512338. . . . . . . . . . . . . . . . . . .
Outer Low Beam 90512338. . . . . . . . . . . . . . . . . . .
Front Turn Signal Lamp 90487485. . . . . . . . . . . . . . .
Rear Turn Signal Lamp and Taillamp 90002521. . . .
Capacities and Specifications
The following approximate capacities are given in
English and metric conversions. Please refer to
ªRecommended Fluids and Lubricantsº in the
Maintenance Schedule booklet for more information.
Transmission 7.0 quarts (6.6 L). . . . . . . . . . . . . . . . .
Engine Crankcase
Oil Change With Filter 6.0 quarts (5.75 L). . . . . . .
Engine Cooling System 10.57 quarts (10.0 L). . . . . .
Fuel Tank 16.0 gallons (60.56 L). . . . . . . . . . . . . . . . .
R
-134a Refrigerant 2.09 lbs. (0.95 kg). . . . . . . . . . . .
NOTE: All capacities are approximate. When adding, be
sure to fill to the approximate level, as recommended in
this manual. Recheck fluid level after filling.

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CURRENT PUBLICATIONS FOR 1999 CADILLAC
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
1999 GM transmissions, transaxles and transfer cases.
RETAIL SELL PRICE: $50.00
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.OWNER'S INFORMATION
Owner publications are written directly for Owners and
intended to provide basic operational information about
the vehicle.
Owner's Manual.
RETAIL SELL PRICE: $15.00
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.
PLEASE COMPLETE THE ORDER FORM SHOWN ON
THE FOLLOWING PAGE AND MAIL TO:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207OR ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM ± 6:00 PM Eastern Time
For Credit Card Orders Only (VISA±MasterCard±Discover)
1999 CADILLAC 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.)

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8-2
Brake
Adjustment 6-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Master Cylinder 6-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pad Wear Indicator Light 2-76 . . . . . . . . . . . . . . . . . . . . . . .
Parking 2-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pedal Travel 6-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing System Parts 6-29 . . . . . . . . . . . . . . . . . . . . . . . .
System Warning Light 2-66 . . . . . . . . . . . . . . . . . . . . . . . . .
To Shift Light 2-73 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission Shift Interlock (BTSI) 2-28 . . . . . . . . . . . . . .
Wear 6-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes 6-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer 4-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking in Emergencies 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . .
Break-In, New Vehicle 2-16 . . . . . . . . . . . . . . . . . . . . . . . . . .
Brightness Control 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Capacities and Specifications 6-62 . . . . . . . . . . . . . . . . . . . .
Carbon Monoxide 2-11, 2-30, 2-31, 4-28 . . . . . . . . . . . . . . .
Care of Your Cassette Tape Player 3-29 . . . . . . . . . . . . . . . . . .
Care of Your Compact Disc Player 3-31 . . . . . . . . . . . . . . . . .
Care of Your Compact Discs 3-30 . . . . . . . . . . . . . . . . . . . . . .
Carpet Cleaning 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cassette Tape Player Errors 3-11, 3-19 . . . . . . . . . . . . . . . . . .
CD Adapter Kits 3-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CD Changer 3-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cellular Telephone 2
-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center Console Storage Area 2-50 . . . . . . . . . . . . . . . . . . . . . .
Center High-Mounted Stoplamp (CHMSL),
Bulb Replacement 6-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Central Door Unlocking System 2-4 . . . . . . . . . . . . . . . . . . . .
Certification Label 4-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains, Safety 4-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains, Tire 6-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat Tire 5-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System Indicator Light 2-65 . . . . . . . . . . . . . . . . . . .
Check Engine Light 2-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Oil Light 2-73 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Things Under the Hood 6-8 . . . . . . . . . . . . . . . . . . .
Checking Your Restraint Systems 1-52 . . . . . . . . . . . . . . . . . .
Chemical Paint Spotting 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . .
Child Restraints 1-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Securing in a Rear Seat Position 1-44 . . . . . . . . . . . . . . . . .
Securing in the Right Front Seat Position 1-46 . . . . . . . . . .
Top Strap 1-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where to Put 1-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Children (Safety Belts) 1-36 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chrome-Plated Wheels, Cleaning 6-51 . . . . . . . . . . . . . . . . . .
Cigarette Lighter 2-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaner, Air 6-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning
Aluminum or Chrome
-Plated Wheels 6-51 . . . . . . . . . . . . .
Exterior Lamps/Lenses 6-50 . . . . . . . . . . . . . . . . . . . . . . . .
Fabric/Carpet 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glass Surfaces 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside of Your Vehicle 6-46 . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Plastic Components 6-48 . . . . . . . . . . . . . . . . . . . . .

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8-3
Leather 6-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside of the Windshield and Wiper Blades 6-48 . . . . . . .
Outside of Your Vehicle 6-49 . . . . . . . . . . . . . . . . . . . . . . . .
Speaker Covers 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tires 6-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Top of the Instrument Panel 6-47 . . . . . . . . . . . . . . . . . . . . .
Vinyl 6-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheels 6-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Climate Control System 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock, Setting the 3-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cluster, Instrument Panel 2-62 . . . . . . . . . . . . . . . . . . . . . . . . .
Comfort Controls 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Comfort Controls and Audio Systems 3-1 . . . . . . . . . . . . . . . .
Compact Disc Changer Errors 3-26 . . . . . . . . . . . . . . . . . . . . .
Compartments, Storage 2-49 . . . . . . . . . . . . . . . . . . . . . . . . . .
Console Shift Lever 2-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Console Storage 2-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control of a Vehicle 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convenience Net 2-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convex Outside Mirror 2-49 . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant 6-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding 6-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking 6-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater, Engine 2-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Add to the Coolant Surge Tank 5-13 . . . . . . . . . . . .
Surge Tank 5-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What to Use 6-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling System 5-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cornering Lamps 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Courtesy Transportation 7-8 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control 2-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control Light 2-74 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customer Assistance
Information 7
-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Offices 7-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Text Telephone (TTY) Users 7-3 . . . . . . . . . . . . . . . . . . . . .
Customer Satisfaction Procedure 7-2 . . . . . . . . . . . . . . . . . . . .
Damage, Finish 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Damage, Sheet Metal 6-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Daytime Running Lamps (DRL) 2-42 . . . . . . . . . . . . . . . . . . .
Dead Battery 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defects, Reporting Safety 7-10, 7-11 . . . . . . . . . . . . . . . . . . .
Defensive Driving 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defogger, Rear Window 3-7 . . . . . . . . . . . . . . . . . . . . . . . . . .
Defrosting 3-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions, Vehicle 6-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dolby Noise Reduction 3-13, 3-20 . . . . . . . . . . . . . . . . . . . . .
Door
Central Unlocking System 2
-4 . . . . . . . . . . . . . . . . . . . . . . .
Locks 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRIVE (D), Automatic Transmission 2-23 . . . . . . . . . . . . . . .
Driver Position 1-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driver's Side Instrument Panel Fuse Block 6-57 . . . . . . . . . . .
Driver's Side Temperature Knob 3-2 . . . . . . . . . . . . . . . . . . . .
Driving
City 4
-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defensive 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drunken 4-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Freeway 4-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In a Blizzard 4-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Foreign Countries 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Rain and on Wet Roads 4-17 . . . . . . . . . . . . . . . . . . . . . .