2000 CADILLAC SEVILLE cooling

5-17
4. With the coolant surge tank pressure cap off, start
the engine and let it run until you can feel the upper
radiator hose getting hot. Watch out for the engine
cooling fans.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower, add
more of the proper mixture to the coolant surge tank
until the level reaches at or above the fill mark at the
forward edge of the surge tank.
5. Then replace the pressure cap. Be sure the pressure
cap is hand
-tight.Start the engine and allow it to warm up. If the CHECK
COOLANT LEVEL message does not appear on the
Driver Information Center, coolant is at the proper fill
level. If a CHECK COOLANT LEVEL message does
appear, repeat Steps 1 to 3 and reinstall the pressure cap
or see your dealer.
If a Tire Goes Flat
It's unusual for a tire to ªblow outº while you're driving,
especially if you maintain your tires properly. If air goes
out of a tire, it's much more likely to leak out slowly.
But if you should ever have a ªblowout,º here are a
few tips about what to expect and what to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot off
the accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake to
a stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like
a skid and may require the same correction you'd use
in a skid. In any rear blowout, remove your foot from
the accelerator pedal. Get the vehicle under control by
steering the way you want the vehicle to go. It may be
very bumpy and noisy, but you can still steer. Gently
brake to a stop
-- well off the road if possible.
If a tire goes flat, the next part shows how to use your
jacking equipment to change a flat tire safely.

6-22 How to Reset the Transaxle Fluid
Change Indicator
After the transaxle fluid has been changed, display the
TRANS FLUID LIFE message by pressing the INFO
button. Then press and hold the INFO RESET button
until the display shows ª100.º This resets the transaxle
fluid life index. The percentage of transaxle fluid life
remaining may be checked at any time by pressing the
INFO button several times until the TRANS FLUID
LIFE message appears.
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-COOL
engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX
-COOL
extended life coolant.
The following explains your cooling system and how
to add coolant when it is low. If you have a problem
with engine overheating, see ªEngine Overheatingº
in the Index.A 50/50 mixture of clean, drinkable water and
DEX
-COOL
coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning lights and gages work as they should.
NOTICE:
When adding coolant, it is important that you
use only DEX
-COOL (silicate-free) coolant.
If coolant other than DEX-COOL is added to
the system, premature engine, heater core or
radiator corrosion may result. In addition, the
engine coolant will require change sooner
-- at
30,000 miles (50 000 km) or 24 months,
whichever occurs first. Damage caused by the
use of coolant other than DEX
-COOL is not
covered by your new vehicle warranty.

6-23 What to Use
Use a mixture of one-half clean, drinkable water and
one
-half DEX-COOL
coolant which won't damage
aluminum parts. If you use this coolant mixture, you
don't need to add anything else.
CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mixture will. Your vehicle's coolant
warning system is set for the proper coolant
mixture. With plain water or the wrong mixture,
your engine could get too hot but you wouldn't
get the overheat warning. Your engine could
catch fire and you or others could be burned.
Use a 50/50 mixture of clean, drinkable water
and DEX
-COOL
coolant.
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.

6-24 Checking Coolant
The engine coolant surge tank is located on the driver's
side of the engine.
The cooling system is under a lot of pressure when it
is hot. If the CHECK COOLANT LEVEL message
appears on the Driver Information Center, you will need
to add coolant.
CAUTION:
Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow out and burn you badly.
Never turn the surge tank pressure cap
-- even a
little
-- when the engine and radiator are hot.
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the FULL
COLD mark, which is at or above the fill mark at the
edge of the surge tank.
If the CHECK COOLANT LEVEL message comes on
and stays on, it means you're low on engine coolant.

6-51
Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted the
same way as the one it replaces.
If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts and wheel nuts for your vehicle.
CAUTION:
Using the wrong replacement wheels, wheel bolts
or wheel nuts on your vehicle can be dangerous.
It could affect the braking and handling of your
vehicle, make your tires lose air and make you
lose control. You could have a collision in which
you or others could be injured. Always use
the correct wheel, wheel bolts and wheel nuts
for replacement.
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.

6-64
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 Not Used
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 Antilock Brake System
44 Air Pump
45 Air Pump
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.

6-70
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) . .
Wheel Nut Torque
100 lb-ft (140 N´m)
Capacities
Transaxle (4T80-E) 15.0 quarts (14.2 L). . . . . . . . . .
Crankcase (Engine Oil with
Filter Change) 7.5 quarts (7.1 L). . . . . . . . . . . . . .
Engine Cooling System 12.5 quarts (11.8 L). . . . . . . .
Fuel Tank 18.5 gallons (70.1L). . . . . . . . . . . . . . . . . .
Refrigerant 2.0 lbs. (0.91 kg). . . . . . . . . . . . . . . . . . . . All capacities are approximate. When adding, be sure to
fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.
Normal Maintenance
Replacement Parts
Air Filter Element AC Type A1208C. . . . . . . . . . . . .
Fuel Filter Element AC Type GF
-627 . . . . . . . . . . . .
Engine Oil Filter AC Type PF
-58 . . . . . . . . . . . . . . . .
PCV Valve AC Type CV
-774C . . . . . . . . . . . . . . . . . .
Spark Plugs PT16EPR
-C13 . . . . . . . . . . . . . . . . . . . .
(GM part 12561466)
Gap: 0.050 inches (1.3 mm)
Windshield Wiper
Blade (Hook Type) 22 inches (56.5 cm). . . . . . . . . .
Vehicle Dimensions
Wheel Base 112.2 inches (285.0 cm). . . . . . . . . . . . .
Length 201.0 inches (510.5 cm). . . . . . . . . . . . . . . . .
Height 55.4 inches (140.6 cm). . . . . . . . . . . . . . . . . . .
Width 75.0 inches (190.4 cm). . . . . . . . . . . . . . . . . . .
Front Tread 62.7 inches (159.3 cm). . . . . . . . . . . . . . .
Rear Tread 62.4 inches (158.6 cm). . . . . . . . . . . . . . .