1998 CADILLAC DEVILLE overheating

Downloaded from www.Manualslib.com manuals search engine If it isn’t, the coolant level should be indicated by a
CHECK COOLANT
LEVEL message on the Driver
Information Center. If it is, you may have a leak in the
radiator hoses, heater hoses, radiator, water pump or somewhere else in the cooling system.
Heater and radiator hoses, and other engine
parts, can be very hot. Don’t touch them.
If you
do, you can be burned.
Don’t run the engine if there is
a leak. If you run
the engine, it could lose all coolant. That could
cause an engine fire, and you could be burned.
Get any leak fixed before you drive the vehicle.
I NOTICE:
Engine damage if you keep running your engine
without coolant isn’t covered
by your warranty.
See “Overheated Engine Protection Operating
Mode” in the Index.
If there seems to be no leak, with the engine on, check to
see if the electric engine cooling fans are running. If the
engine is overheating, both fans should be running..
If
they aren’t, your vehicle needs service.
.

Downloaded from www.Manualslib.com manuals search engine Engine Coolant
The cooling s stem 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.
B
The following explains your cooling system and how
to add coolant when it is low. If you have a problem
with engine overheating, see “Engine Overheating” in
the Index.
A 50/50 mixture of water and DEX-COOL’
coolant will:
0 Give freezing protection down to -34°F (-37°C).
0 Give boiling protection up to 265 “F ( 129 O C).
0 Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 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.
6-22

Downloaded from www.Manualslib.com manuals search engine Adding Coolant
If you need more coolant, add the proper DEX-COOL@
coolant mixture at the surge tank, but only when the
engine
is cool.
r-
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol, and it will burn if the engine parts are hot
enough. Don’t spill coolant on
a hot engine.
Surge Tank Pressure Cap
I NOTICE:
The surge tank cap is a 15 psi (105 kPa)
pressure-type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating. Be sure the arrows on the cap
line up.
If the surge tank pressure cap needs to be replaced, a
GM cap is recommended.
Thermostat When replacing the pressure cap, make sure it is tight.
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a preset temperature.
If your thermostat needs to be replaced, a GM
thermostat is recommended.
6-25

Downloaded from www.Manualslib.com manuals search engine Tires
Your ~ew vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where ,to obtain service, see
your-Cadillac Warranty booklet for details.
I-
A CAUTION:
L
Poorly maintained and improperly used tires
are dangerous.
Overloading your tires can cause
overheating as
a result of too much friction.
You could have an air-out and a serious
accident. See “Loading Your Vehicle” in the Index.
‘0 Underinflated tires pose the same danger as
overloaded tires. The resultihg accident
could cause serious injury. Check all tires
frequently to maintain the recommended’
pressure. Tire pressure should be checked when
your tires are cold.
CAUTION: (Continued) CAUTION:
(Continued)
0 Overinflated tires are more likely to be
cut, punctured or broken by
a sudden
impact
-- such las when you hit a pothole.
Keep tires at the recommended pressure.
0 Worn, old tires can cause accidents. If your
tread is badly worn, or
if your tires have
been damaged, replace them.
See “Inflation
-- Tire Pressure’’ in this section
for .inflation pressure adjustment for higher
speed driving.
Inflation -- Tire Pressure
The Tire-Loading Information label, which is located on
the rear edge of the driver’s door, shows the correct
inflatiop pressures for your tires when they’re cold.
“Cold” means your vehicle has been sitting for, at least.
three’ hours or driven no more than
1 mile (1.6 km).
6-41
I -. ..

Downloaded from www.Manualslib.com manuals search engine Identification ................................ 6-57
Misfire. Ease
Off Gas Pedal Message ............. 2-85
Overheated. Stop Engine Message
................ 2-85
Overheating
................................. 5-15
PowerReduced
.............................. 2-85
Running While Parked
.................... 2.32. 4.28
Specifications
................................ 6-66
Starting Your
................................ 2-20
Engine Hot
. A/C Off Message .................... 2-85
Engineoil
.................................... 6-11
Adding
..................................... 6-12
Checking
................................... 6-12
Additives
................................... 6- 14
Used
....................................... 6-15
What Kind
of Oil to Use ....................... 6-13
Whentochange
.............................. 6-14
Stop Engine Message
.......................... 2-85
Engine Speed Limiter
............................ 2-67
EnglisMetric Display
.......................... 2-66
Ethanol
........................................ 6-4
Exhaust. Engine
........................... 2.32. 4.28
Express-Down Window
.......................... 2-34
Exterior Lighting
............................... 2- 10
Exterior Lighting Battery Saver .................... 2-46
Fabric Cleaning
............................... 6-50
Fan Button
................................. 3.2. 3.6
Filling Your Tank
................................ 6-5
Finish Care
.................................... 6-53
Finish Damage
................................. 6-55 First Gear. Automatic Transaxle
................... 2-26
Flashers. Hazard Warning
......................... 5-2
Flash-To-Pass Feature
........................... 2-36
Flat Tire. Changing
............................. 5-24
FloorMats
.................................... 2-57
Fluid Capacities
................................ 6-66
Foreign Countries. Fuel
........................... 6-5
FrenchLanguageManual
11
Front Storage Armrest ........................... 2-54
Front Towing
.............................. 5-9. 5-11
Fuel
.......................................... 6-3
Canada
...................................... 6-5
Data Panel
.................................. 2-78
DoorRelease
................................. 6-6
Filling Your Tank
.............................. 6-5
Gage
....................................... 2-77
In Foreign Countries
........................... 6-5
Level Low Message
........................... 2-85
Fuses and Circuit Breakers
....................... 6-60
Gages
FogLamps
.................................... 2-44
.. ...........................
Front Turn Signal Lamp Bulb Replacement .......... 6-34
Engine Coolant Temperature
.................... 2-73
Fuel
....................................... 2-77
Tachometer
.................................. 2-67
GAWR
....................................... 4-30
Gear Positions. Automatic Transaxle ................ 2-23
GloveBox
.................................... 2-54
Gold Key Courtesy Transportation .................. 7-8

Downloaded from www.Manualslib.com manuals search engine Mountain Roads ................................ 4-23
Multifunction Lever
............................. 2-35
Net. Convenience
............................... 2-55
Neutral. Automatic Transaxle
..................... 2-24
New Vehicle Break-In
............................ 2- 18
Nightvision
................................... 4-16
Odometer
.................................... 2-66
Odometer. Trip
................................. 2-66
Off-Road Recovery
............................. 4-12
Oil. Engine
.................................... 6-11
Oil Life Indicator
............................... 2-96
Oil Life Indicator. How to Reset
................... 6-15
Oil Pressure Light
.............................. 2-76
Oil Pressure Low Stop Engine Message
............. 2-86
OnStar System
................................. 2-57
Options
Not Set Message ......................... 2-86
Overdrive. Automatic Transaxle
................... 2-25
Overheated Engine Protection Operating Mode
....... 5- 15
Overheating Engine
............................. 5- 15
Owner Publications. Ordering
................ 7-13. 7-14
Paint Spotting. Chemical
........................ 6-55
ParadeDimming
............................... 2-47
Park
Automatic Transaxle .......................... 2-23
Shifting Into
................................. 2-28
Shifting Out
of ............................... 2-31 Parking
At Night
.................................... 2-14
Brake
...................................... 2-26
Brake Indicator Light
.......................... 2-70
Lots
....................................... 2-14
Over Things That
Burn ........................ 2-31
WithaTrailer
................................ 4-38
Passenger’s Temperature Control
............... 3.3. 3.6
Passing
...................................... 4-13
PASS-Key
i3 II ................................. 2-17
Phone Not Present Message
....................... 2-86
Power Accessory. Retained
........................... 2-19
Antenna Mast Care
............................ 3-41
Door Locks
................................... 2-5
Remote Control Mirror
........................ 2-52
Seat
......................................... 1-2
Steering
.................................... 4-10
Steering Fluid
................................ 6-26
Windows
................................... 2-33
Windows and Other Power Options
............... 6-58
Powerseat
..................................... 1-2
Lumbar Controls
.............................. 1-3
Memory Function
.............................. 1-3
Pregnancy. Use
of Safety Belts .................... 1-20
Problems on the Road
............................ 5-1
Program Pass Key Message ....................... 2-86
Programmable Automatic Door Locks
.......... 2-5. 2-91
Publications. Service and Owner
.............. 7- 13. 7- 14
Pull-Down Feature. Automatic
.................... 2-13
8-8