1999 CADILLAC SEVILLE headlamp

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Headlamp Aiming
Your vehicle has a headlamp system equipped with
horizontal and vertical aim indicators. The aim has been
pre
-set at the factory and should need no further
adjustment. This is true even though your vertical and
horizontal aim indicators may not fall exactly on the
ª0º (zero) marks on their scales.
If your vehicle is damaged in an accident, the headlamp
aim may be affected. Aim adjustment may be necessary
if it is difficult to see lane markers (for horizontal aim),
or if oncoming drivers flash their high beams at you (for
vertical aim). If you believe your headlamps need to be
re
-aimed, we recommend that you take it to your dealer
for service; however, it is possible for you to re
-aim
your headlamps as described in the following procedure.
NOTICE:
To make sure your headlamps are aimed
properly, read all the instructions before
beginning. Failure to follow these instructions
could cause damage to headlamp parts.
The vehicle should be properly prepared as follows:

The vehicle must have all four tires on a perfectly
level surface.

If necessary, pads may be used on an uneven surface.

The vehicle should not have any snow, ice or mud
attached to it.

The vehicle should be fully assembled and all other
work stopped while headlamp aiming is being done.

There should not be any cargo or loading of the
vehicle, except it should have a full tank of fuel and
one person or 160 lbs. (75 kg) on the driver's seat.

Close all doors.

Tires should be properly inflated.

Rock the vehicle to stabilize the suspension.

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B. Vertical Aiming Screw
D. Level Bubble
2. Turn the vertical aiming screw until the level bubble
is lined up with zero.Front Turn Signal Lamps
1. The turn signal lamps are located on the outboard
side of the headlamps. To access, remove the
headlamp, (see Steps 1, 2 and 3 under ªHeadlampsº).
2. Press the bulb socket tab and turn the bulb socket
counterclockwise to unlock the socket from the
lamp housing.
3. To remove the bulb, grasp the socket firmly and pull
the bulb out. Install the new bulb and reverse the
steps to replace.

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NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper
height, vehicle ground clearance and tire or tire
chain clearance to the body and chassis.
See ªChanging a Flat Tireº in the Index for
more information.
Used Replacement Wheels
CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can't know how it's been used or
how far it's been driven. It could fail suddenly
and cause an accident. If you have to replace a
wheel, use a new GM original equipment wheel.
Tire Chains
NOTICE:
Use tire chains only where legal and only when
you must. Use only SAE Class ªSº type chains
that are the proper size for your tires. Install
them on the front tires and tighten them as
tightly as possible with the ends securely
fastened. Drive slowly and follow the chain
manufacturer's instructions. If you can hear the
chains contacting your vehicle, stop and retighten
them. If the contact continues, slow down until it
stops. Driving too fast or spinning the wheels
with chains on will damage your vehicle.

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Electrical System
Add-On Electrical Equipment
NOTICE:
Don't add anything electrical to your vehicle
unless you check with your dealer first. Some
electrical equipment can damage your vehicle
and the damage wouldn't be covered by your
warranty. Some add
-on electrical equipment can
keep other components from working as
they should.
Your vehicle has an air bag system. Before attempting to
add anything electrical to your vehicle, see ªServicing
Your Air Bag
-Equipped Vehicleº in the Index.
Headlamp Wiring
The headlamp wiring has an individual fuse. An
electrical overload will cause the lamps to go on and off,
or in some cases to remain off. If this happens, have the
headlamp wiring checked right away.
Windshield Wiper Fuses
A circuit breaker protects the wiper motor. If the wiper
motor overheats due to heavy snow, the wipers will stop
until the motor cools and will then restart.
A MaxiFuse

powers the wiper motor. If the MaxiFuse
blows, there is an electrical problem. Be sure to have
it fixed.
Power Windows and Other Power Options
Circuit breakers protect the power windows. When the
current load is too heavy, the circuit breaker opens and
closes, protecting the circuit until the problem is fixed or
goes away.

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Minifuses
Fuse Usage
1 Not Used
2 Accessory
3 Windshield Wipers
4 Not Used
5 Headlamp Low Beam Left
6 Headlamp Low Beam RightFuse Usage
7 Instrument Panel
8 Powertrain Control Module Battery
9 Headlamp High Beam Right
10 Headlamp High Beam Left
11 Ignition 1
12 Not Used
13 Not Used
14 Cruise Control
15 Oxygen Sensor A
16 Injector Bank #2
17 Not Used
18 Powertrain Control Module Ignition
19 Direct Ignition System
20 Oxygen Sensor B
21 Injector Bank #1
22 Auxiliary Power
23 Cigar Lighter
24 Fog Lamps/Daytime Running Lamps
25 Horn
26 Air Conditioner Clutch

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Micro Relays
Relay Usage
27 Headlamp High Beam
28 Headlamp Low Beam
29 Fog Lamps
30 Daytime Running Lamps
31 Horn
32 Air Conditioner Clutch
Mini Relays
Relay Usage
33 Not Used
34 Accessory
35 Starter 2
36 Starter 1
37 Cooling Fan Secondary
38 Ignition 1
39 Cooling Fan Series/Parallel
40 Cooling Fan PrimaryMaxibreaker
Circuit
BreakerUsage
41 Starter
MaxiFuses
Fuse Usage
42 Not Used
43 Export Brake
44 Antilock Brake System Solenoid
45 Antilock Brake System Motor
46 Cooling Fan Secondary
47 Cooling Fan Primary
The spare fuses are located in numbers 48 through 52.
The fuse puller is located in number 53.

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Replacement Bulbs
Application Number
Headlamps Composite
Inner High Beam 9005 HB3. . . . . . . . . . . . . . .
Outer Low Beam 9006 HB4. . . . . . . . . . . . . . .
Front Turn Signal 2357 NA. . . . . . . . . . . . . . . .
Stop/Taillamp 3057. . . . . . . . . . . . . . . . . . .
Rear Turn Signal 3057. . . . . . . . . . . . . . . .
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.
Engine Specifications
Displacement 279 cubic inches (4 565 cc). . . . . . . . .
Type 4.6 L DOHC V8. . . . . . . . . . . . . . . . . . . . . . . . .
VIN Engine Code
SLS Y. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horsepower
SLS 275 (bhp) @ 5600 rpm. . . . . . . . . . . . . . . . . . .
205 (kW) @ 5600 rpm
STS 300 (bhp) @ 6000 rpm. . . . . . . . . . . . . . . . . . .
224 (kW) @ 6000 rpm
Torque
SLS 300 (lb
-ft) @ 4000 rpm . . . . . . . . . . . . . . . . . .
407 (N´m) @ 4000 rpm
STS 295 (lb
-ft) @ 4400 rpm . . . . . . . . . . . . . . . . . .
400 (N´m) @ 4400 rpm
Firing Order 1
-2-7-3-4-5-6-8 . . . . . . . . . . . . . . . . . . .
Thermostat Starts To Open 177
-184
F (81-85
C) . .

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Section 8 Index
A
BS 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adapter Kits, CDs 3-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adaptive Seat Control 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding Engine Oil 6-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding Equipment to the Outside of Your Vehicle 6-3 . . . . . .
Aiming Headlamps 6-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Bag 1-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How Does it Restrain 1-25 . . . . . . . . . . . . . . . . . . . . . . . . . .
How it Works 1-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location 1-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Readiness Light 1-21, 2-68 . . . . . . . . . . . . . . . . . . . . . . . . .
Servicing 1-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What Makes it Inflate 1-24 . . . . . . . . . . . . . . . . . . . . . . . . . .
What Will You See After it Inflates 1-25 . . . . . . . . . . . . . . .
When Should it Inflate 1-24 . . . . . . . . . . . . . . . . . . . . . . . . .
Air Cleaner/Filter 6-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning 3-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning Refrigerants 6-69 . . . . . . . . . . . . . . . . . . . . .
Air Control, Climate Control Panel 3-3, 3-4 . . . . . . . . . . . . . .
Air Filter, Passenger Compartment 3-9 . . . . . . . . . . . . . . . . . .
Alarm, Theft-Deterrent System 2-15 . . . . . . . . . . . . . . . . . . . .
Alignment and Balance, Tire 6-49 . . . . . . . . . . . . . . . . . . . . . .
Aluminum Wheels, Cleaning 6-55 . . . . . . . . . . . . . . . . . . . . . .
Antenna, Diversity 3-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Antifreeze 6-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Anti
-Lock
Brake System Warning Light 2-70, 4-7 . . . . . . . . . . . . . . . .
Brakes 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lockout Feature 2-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Theft, Radio 3-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appearance Care 6-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appearance Materials, Vehicle Care 6-57 . . . . . . . . . . . . . . . .
Arbitration Program 7-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Armrest, Storage 2-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ashtrays 2-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assist Handles 2-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio
Adding Equipment 3
-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Wheel Controls 3-31 . . . . . . . . . . . . . . . . . . . . . . .
System Tips 3-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Systems 3-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto Exit Seat 2-87 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto Exit Steering Wheel 2-87 . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Door Locks 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Overdrive 2-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Transaxle
Operation 2
-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting 2-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your Engine 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .