1997 CADILLAC DEVILLE coolant temperature

Downloaded from www.Manualslib.com manuals search engine To find your comfort zone, start with the 75 OF (24°C)
setting and allow about
20 minutes for the system to
regulate. Turn the
TEMP/AUTO knob to adjust the
temperature
if necessary. If you choose 60°F (1 6"C),
the system will remain at that maximum cooling setting
and will not regulate fan speed. If you choose the
temperature of
90°F (32 O C), the system will remain at
that maximum heating setting and will not regulate fan
speed. Choosing either maximum setting will not cause
the system to heat or cool any faster.
With the automatic setting, the air conditioning
compressor automatically cycles when needed to cool
the air.
In cold weather, when the system senses the need
for heat, the airflow will be directed out the floor
outlets.
As the interior temperature approaches a desired
setting, the blower speed will decrease.
To maintain
interior comfort, the airflow may move to the instrument
panel
air outlets and floor outlets (bi-level mode). On
bright sunny days in cold weather, the airflow may come
out of the
air conditioning outlets (AC mode) to
maintain comfort and prevent stuffiness. If
your vehicle is sitting out on a hot day and you have it
set on
AUTO, the air will first flow out the floor air
outlets for a few seconds. That is normal.
This is to
expel hot air from the
air outlets. As the air is cooled,
the airflow will move through the
air conditioning
outlets.
If you start your vehicle with the fan setting on
HI, it will skip the air conditioning purge.
To avoid blowing cold air in cold weather, the system will
delay turning on the fan
until warm air is available. The
length of delay depends on the outside
air temperature,
engine coolant temperature or the time since the engine
was last started.
As the coolant warms up, the blower fan
speed will gradually increase and
air will flow from the
heater outlets, with some airflow to the windshield to
prevent fogging under most normal conditions.
If you leave your vehicle, the system will remember the
control setting the next time you start your engine,
except for recirculation and defrost. Each ignition cycle
cancels recirculation, whereas,
DEFROST will change
to automatic operation when the ignition is shut
off and
then turned back on.

Downloaded from www.Manualslib.com manuals search engine Manual -= mation
You may manually adjust the air delivery mode or
fan speed.
he
fl AC: This setting directs airflow through the
middle instrument panel outlets.
he
BI-LEVEL: This setting directs air into your
vehicle in two ways. Cool air is directed to the upper
portion of your body through the four instrument panel
outlets while warmed air
is directed to the floor.
'# HEATERDEFROST: This setting directs air to
the floor outlets and toward the windshield.
lfl HEATER: This setting directs warmed air
through the floor outlets. Some warm air is diverted to
the windshield to minimize fogging.
DEFROST Press this button to quickly remove
fog or frost from the windshield.
This setting sends most
of the airflow to the windshield with only a small
amount to
the floor outlets.
we
0
# FAN SPEEDS: Press the button with the fan symbol
on it until AUTO is displayed on the screen. At
this
setting, the fan speed is automatically controlled. If it is
cold outside, the blower may not run in the maximum
high fan speed right away. The system checks the
temperature of the engine coolant to assure it is warm
enough to provide heat. When the engine coolant is
warm, the controller allows the fan to gradually increase
to a higher speed.
This prevents cold air from blowing
into the passenger compartment. If you want the blower
fan at a high speed, press the up arrow button until you see HI on the display. If you want the fan speed to be
automatic, but
you like the fan speed to be higher than
the AUTO setting, press the fan symbol button until HI
AUTO is shown on the display. If you want the blower
fan at a low speed, press the down arrow button until LO
is shown on the display. If you want the fan speed to run
lower than the AUTO setting, press the button until
LO
AUTO is shown on the display.

Downloaded from www.Manualslib.com manuals search engine Attach a separate safety chain around the end of each
axle inboard
of the spring.
Engine Overheating
You will find an ENGINE COOLANT HOT-IDLE
ENGINE message or a STOP ENGINE ENGINE
OVERHEATED message on the Driver Information
Center (DIC). There is also an engine temperature
warning light and/or gage on the instrument panel. See
“Engine Coolant Temperature Warning Light” or
“Engine Coolant Temperature Gage” in the Index.
Overheated Engine Protection
Operating Mode
Should a low coolant condition exist and the message
STOP ENGINE ENGINE OVERHEATED is displayed,
an overheat protection mode which alternates firing
groups
of four cylinders helps prevent engine damage.
In this mode, you will notice a loss in power and engine
performance. This operating mode allows your vehicle
to be driven to a safe place in
an emergency; you may
drive up to
50 miles (80 km). Towing a trailer in the
overheat protection mode should be avoided.
NOTICE:
After driving in the overheated engine protection
operating mode, to
avoid engine damage, allow
the engine to cool before attempting any repair.
The engine oil will
be severely degraded. Repair
the cause
of coolant loss, change the oil and reset
the oil life indicator. See “Engine Oil, When to
Change” in the Index.
. 5-15

Downloaded from www.Manualslib.com manuals search engine How to Reset Transaxle Fluid
Change Indicator
Your vehicle is equipped with a transaxle fluid change
indicator.
A CHANGE TRANS FLUID message will
display
on the Driver Information Center (DIC) when
the powertrain computer determines
that the transaxle
fluid needs to be changed or at each
100,000 miles
(160 000 km) interval, whichever occurs first. When
this message appears, change the transaxle fluid and
reset
the transaxle fluid life indicator as follows:
1. Turn the ignition on but do not start the engine.
2. Press and hold the OFF and rear defog buttons on the
climate control at the same time until the
TRANS
FLUID RESET message appears on the DIC.
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.
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.
J
A 50/50 mixture of water and DEX-COOL@
coolant will:
Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 265 “F (129°C).
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.

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.
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.
When replacing the pressure cap, make sure it
is tight.
Surge Tank Pressure Cap
1 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
General Motors cap
is recommended.
Thermostat
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 General
Motors thermostat
is recommended.
6-24

Downloaded from www.Manualslib.com manuals search engine Power Steering Fluid
The power steering fluid
reservoir is located next to the coolant surge tank
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 COLD mark. If
necessary, add only enough fluid to bring the level up
to the mark.
What to Use
To determine what kind of fluid to use, see
“Recommended Fluids and Lubricants” in the
Maintenance Schedule booklet. Always use the proper
fluid. Failure to use the proper fluid can cause leaks and
damage hoses and seals.
Windshield Washer Fluid
What to Use
When you need windshield washer fluid, be sure to read
the manufacturer’s instructions before use. If you will be
operating your vehicle in an area where the temperature
may fall below freezing, use a fluid that has sufficient
protection against freezing.
6-25

Downloaded from www.Manualslib.com manuals search engine Door Central Unlocking System
....................... 2-4
Locks
....................................... 2-4
Map Pockets
................................. 2-59
OpenMessage
............................... 2-91
Driver Door Open Message
....................... 2-91
Driver Information Center
........................ 2-85
Driver Information Center Messages
................ 2-89
Driver Position
................................. 1 - 13
Driver’s Outside Auto-Dimming Rearview Mirror
..... 2-59
Driving City
........................................ 4-21
Defensive
.................................... 4-2
Drunken
..................................... 4-3
InaBlizzard
................................. 4-28
In Foreign Countries ........................... 6-4
IntheRain
.................................. 4-18
Night
...................................... 4-16
OnCurves
.................................. 4-11
On Grades While Towing a Trailer
............... 4-38
On Hill and Mountain Roads
.................... 4-24
On Snow and Ice
............................. 4-27
Throughwater
............................... 4-20
Wet Roads
.................................. 4- 18
Winter ...................................... 4-26
With a Trailer
................................ 4-37
DRL ......................................... 2-46
Drunken Driving
................................ 4-3
Dual Temperature Control
..................... 3.3. 3-7
Freeway
.................................... 4-22
.
ECC ......................................... 3-2
Electrical Equipment. Adding
........... 2.23. 3.31. 6-59
Electrical Svstem
............................... 6-59 .... -J
Electrochromic Daymight Rearview Mirror ..... 2.54, 2.55
Electronic Climate Control ........................ 3-2
Electronic Level Control
......................... 4-32
Electronic Solar Sensor ........................... 3-6
Engine
........................................ 6-9
Compartment Fuse Block
....................... 6-62
Coolant
..................................... 6-21
Coolant Heater
............................... 2-23
Coolant Hot-Idle Engine Message
................ 2-91
Coolant Temperature Gage
..................... 2-79
Coolant Temperature Warning Light
.............. 2-79
Exhaust
..................................... 2-34
Identification
................................ 6-58
Misfire
.. Ease Off Gas Pedal Message ........... 2-91
Overheating
................................. 5-15
Running While Parked
......................... 2-34
StartingYour
................................ 2-22
EngineOil
.................................... 6-10
Adding
..................................... 6-11
Additives ................................... 6-13
Checking
................................... 6-11
Used
....................................... 6-14
What Kind
of Oil to Use ....................... 6-12
Whentochange
.............................. 6-13
Engine Speed Limiter
............................ 2-73
Englishhietric Display
.......................... 2-73
Specifications
................................ 6-69
8-4

Downloaded from www.Manualslib.com manuals search engine Ethanol ........................................ 6-4
Express-Down Window
.......................... 2-36
Exterior Lighting
............................... 2- 10
Exterior Lighting Battery Saver .................... 2-50
Exhaust, Engine
................................ 2-34
Fabric Cleaning
.......................... 6-49, 6-50
Fan Button
................................. 3-2, 3-6
Filling Your Tank
................................ 6-5
Finish Care
.................................... 6-54
Finish Damage
................................. 6-55
First Gear, Automatic Transaxle
................... 2-28
Flashers, Hazard Warning
......................... 5-2
Flash-To-Pass Feature
........................... 2-38
Flat Tire, Changing
............................. 5-25
Floor Mats
.................................... 2-63
Fluid Capacities
................................ 6-69
Foreign Countries, Fuel
........................... 6-4
Front Storage Armrest
........................... 2-59
Front Towing
.............................. 5-9, 5-11
Front Turn Signal Lamps, Bulb Replacement ......... 6-36
Door Release
............................. 6-5, 6-6
Filling Your Tank
.............................. 6-5
In Foreign Countries ........................... 6-4
Level Low Message
........................... 2-91
Fuses and Circuit Breakers ....................... 6-62
FogLamps
.................................... 2-47
FrenchLanguageManual
........................... ii
Fuel
.......................................... 6-3
DataPanel
.................................. 2-84
Gage
....................................... 2-83 Gages
Engine Coolant Temperature
.................... 2-79
Fuel
....................................... 2-83
Gear Positions, Automatic Transaxle
................ 2-25
Gold Key Courtesy Transportation
.................. 7-8
Gross Axle Weight Rating
........................ 4-31
Gross Vehicle Weight Rating
...................... 4-31
GVWR
....................................... 4-31
Handles, Assist
................................. 2-63
Hazard Warning Flashers
.......................... 5-2
Head Restraints
................................. 1-7
Bulb Replacement
............................ 6-31
High/Low Beam Changer
...................... 2-37
Suggested Message
...................... 2-47, 2-48
Wiper Activated
.............................. 2-46
Hearing Impaired, Customer Assistance
.............. 7-4
Heatedseats
.................................... 1-5
Heating ....................................... 3-11
High-Beam Headlamps
.......................... 2-37
Highway Hypnosis
.............................. 4-24
Hill and Mountain Roads
......................... 4-24
Hitches, Trailer
................................. 4-36
Tachometer
.................................. 2-73
GAWR
....................................... 4-31
GloveBox
.................................... 2-59
Guide
en FranGais 11 .. .................................
Halogen Bulbs ................................ 6-31
Headlamps
.................................... 2-46
Aiming
..................................... 6-33
OnReminder
................................ 2-46
Wiring
..................................... 6-59