1996 CADILLAC DEVILLE heating

Downloaded from www.Manualslib.com manuals search engine Fan Button
The button with the fan symbol adjusts the fan speed. Press the up
arrow to increase fan speed and the down
arrow to decrease fan speed.
Temperature Button
The red and blue temperature buttons adjust the air
temperature coming through the system. Press the blue
button for a eooler setting or the red button for a warmer setting. The outside temperature is always displayed
when your vehicle is running.
You can change it from
Fahrenheit to Celsius by pressing the
ENGNET
(English/metric) button on the DIC.
Mode Controls
The AUTO/ECON button automatically controls the
direction
of air delivery for air conditioning and non-air
conditioning modes.
Automatic Operation
When the system is set for AUTO, sensors will control
the air delivery mode.
Air will come from the floor,
middle or windshield outlets. The fan speed will vary as
the system maintains the selected temperature setting. Be
careful not to put anything over the solar sensor
located in the middle of the instrument panel near the
windshield. This sensor
is used by the automatic system
to regulate temperature.
To find your comfort zone, start with 75°F (24°C)
setting, allow about 20 minutes for the system to
regulate. Press the red or blue temperature buttons 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"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 this 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 A/C outlets (A/C mode) to maintain
comfort and prevent stuffiness.

Downloaded from www.Manualslib.com manuals search engine Heating
rress the AUTOECON button to direct airflow out
of the floor outlets and to help save fuel. Adjust the
temperature, if necessary, by pressing the blue button
to decrease temperature and pressing the red button
to
increase temperature. Also remember to adjust the fan
speed by pressing the up or down arrow.
Outside air will be brought in and sent through the floor
outlets. The heater works best if you keep your windows
closed while using it.
Ventilation System
Your Cadillac's flow-through ventilation system
supplies outside air into the vehicle when it
is moving.
Outside
air will also enter the vehicle when the heater or
the air conditioning fan is running.
.I . .
....,.
The front outlets are located in the center and at each
side
of the instrument panel. You can adjust the
direction
of airflow by moving the center control levers
or you can stop the airflow by moving the lever located
on each side
of the outlets downward.
3-6

Downloaded from www.Manualslib.com manuals search engine The system will go off after a four-minute heating cycle.
If you shift out of
PARK (P), the system will only cycle
for
two minutes. If you want it to cycle again, press the
button. It will
go on for two-minute cycles after that. If
the windshield has cleared before the cycle is over, you
can turn it off by pressing the button again.
Use the defroster feature
to clear fog from the
windshield as previously described.
There is a metal film in the windshield which will block
out some radio or microwave signals. Therefore, the
heated windshield will reduce the useful range of
devices such as garage door openers and radar detectors.
(In certain states, radar detectors are legal.)
Do not use the DE-ICE button if your vehicle has a
cracked windshield.
A crack will not allow the system to
function properly. Have the windshield repaired before
using the DE-ICE button again.
Defogging and Defrosting
On cool, humid days, use DEFOG to keep the
windshield and side windows clear. Use DEFROST to
remove
fog or ice from the windshield quickly in
extremely humid
or cold conditions.
7
Press the DEFOG or DE-ICE button and adjust the fan
speed by pressing the fan button up or down. If you use
DEFROST, adjust
the fan speed the same way. If you
select DEFROST from AUTO, the system will control
the
fan speed. The temperature will also need to be
adjusted to your comfort level. Press the blue button to
decrease the temperature and the red button to increase the temperature.
Note that recirculation is not available
in the defrost or
defog modes.
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1
3-8

Downloaded from www.Manualslib.com manuals search engine P
L-
c
(@ Rear Window Defogger
The lines you see on the rear window warrn the glass.
Press the button to turn on the rear defogger. With it,
the rear window and both outside rearview mirrors are heated.
The system will automatically shut off after
10 minutes. If further defogging is desired, press the
button again.
Do not attach a temporary vehicle license, tape or decals
across the defogger grid on the rear window.
NOTICE:
Scraping the inside of your rear window could
cut and damage the heating grids.
Your warranty
would not cover this damage.
And don’t put
decals there;
you might have to scrape them off.
Steering Wheel Controls for
Climate Control
Some heating and cooling
controls can be adjusted at
the steering wheel. Other touch controls operate some audio controls. See
“Steering Wheel Controls
for Audio System’’ later in
this section.
# FAN SPEED: Press the up arrow lever to increase
the
fan speed and the down arrow lever to decrease
fan speed.
TEMP: Press the up arrow lever to increase
the temperature and the down arrow lever to
decrease temperature.
c

Downloaded from www.Manualslib.com manuals search engine lhrn Signals When Towing a nailer
When you tow a trailer, your vehicle may need a
different
turn signal flasher and extra wiring. Check
with your Cadillac dealer. The green
arrows on your
instrument panel will flash whenever you signal a
turn
or lane change. Properly hooked up, the trailer lamps
will
also flash, telling other drivers you’re about to turn,
change lanes or stop.
When towing a trailer, the green arrows on your
instrument panel will flash for turns even
if the bulbs on
the trailer
are burned out. Thus, you may think drivers
behind you are seeing your signal when they are not. It’s
important to check occasionally to be sure the trailer
bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade.
I€ you don’t shift
down, you might have to use your
brakes so much that
they would get hot and no longer work well.
On a long uphill grade,
shift down and reduce your
speed to around
45 mph (70 b/h) or less to reduce the
possibility
of engine and transaxle overheating.
If your vehicle weighs more
than 1,OOO lbs. (450 kg),
you may want to drive in
THIRD (3) instead of
OVERDRIVE (@).
4-38

Downloaded from www.Manualslib.com manuals search engine Engine Overheating
You will find an ENGINE COOLANT HOT-IDLE
ENGINE message
or a STOP ENGINE ENGINE
OVERHEATED message on the DIC. There is also an
engine temperature warning light
on the instrument
panel. See “Engine Temperature Warning Light” in the
Index.
Overheated Engine Protection Operating
Mode
Y
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.
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.
I 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 may be
severely degraded. Change the
oil and reset the
oil life indicator. See “Engine Oil, When to
~ Change” in the Index.
P

Downloaded from www.Manualslib.com manuals search engine 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 fans are running. If the engine
is overheating, both fans should
be running. If they
aren’t, your vehicle needs service.
How to Add Coolant to the Coolant Surge
Tank
If you haven? found a problem yet, but the coolant level
isn’t at
the proper level (2.5 inches (60 mm) below the
base
of the fill neck), add a 50/50 mixture of clean
water (preferably distilled) and DEX-COOL TM
antifreeze at the coolant surge tank, but be sure the
cooling system, including
the coolant surge tank
pressure cap, is cool before you do it. (See “Engine Coolant”
in the Index for more information.)
I A CAUTION:
Steam and scalding liquids from a hot cooling
system
can blow out and burn you badly. They are
under pressure, and if you turn the coolant surge
tank pressure cap -- even a little -- they can come
out at
high speed. Never turn the cap when the
cooling system, including the coolant surge tank
pressure cap,
is hot. Wait for the cooling system
and coolantsurge tank pressure cap to cool if you
ever
have to turn the pressure cap.
5-20

Downloaded from www.Manualslib.com manuals search engine Engine Coolant
The cooling system in your vehicle is filled with new
DEX-COOL (orange-colored, silicate-free) engine
coolant. This coolant is designed to remain in your vehicle for
5 years or 100,000 miles (166 0o0 km),
whichever occurs first.
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 the proper coolant for
your Cadillac will:
Give freezing protection down to -34°F (-37 O C).
Give boiling protection up to 265 “F (129 “C).
Protect against rust and corrosion.
0 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
DEX-COOL TM (orange-colored, silicate-free)
coolant meeting
GM Specification 6277M.
If silicated coolant 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.
What
to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half
DEX-COOL (orange-colored,
silicate-free) antifreeze that meets
GM Specification
6277M, which won’t damage aluminum parts. Use
GM Engine Coolant Supplement (sealer) (GM Part
No. 3634621) with any complete coolant change. If you
use this mixture, you don’t need
to add anything else.
A special procedure is required for adding sealer; see the
Cadillac service manual.
(To order a service manual, see
“Service and Owner Publications”
in the Index.)
6-20 Y