1996 CADILLAC DEVILLE engine overheat

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

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A 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 mix will. Your vehicle’s coolant warning
system is set for the proper coolant mix. With
plain water
or the wrong mix, 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 mix of clean
water and
DEX-COOL (orange-colored,
silicate-free) antifreeze.
NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged. The
repair cost wouldn’t be covered by your
warranty.
Too much water in the mix can freeze
and crack the engine, radiator, heater core and
other parts.
[f you have to add coolant more than four times a year,
lave 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.

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Adding Coolant
If you need more coolant, add the proper mix at the
surge tank, but only when the engine is cool.
I A CAUTION:
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
I NOTICE:
The surge tank cap is a 15 psi (105 kPa)
pressure-type
cap and must be tightly instalfed 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.

Downloaded from www.Manualslib.com manuals search engine Tires
We don’t make tires. Your new Cadillac 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.
A CAUTION:
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.
Underinflated tires pose the same danger as
overloaded tires. The resulting 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)
Overinflated tires are more likely to be
cut, punctured or broken by
a sudden
impact
-- such as when you hit a pothole.
Keep tires
at the recommended pressure.
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
inflation 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 a mile.
If you’ll be driving at speeds higher than
100 mph
(160 km/h) where it is legal, raise the cold inflation
pressure
of each tire to 35 psi (240 Wa). When you end
this very high-speed driving, reduce the cold inflation
6-36

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Add-on Electrical Equipment
NOTICE:
Don’t add anything electrical to your Cadillac
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 Cadillac, see “Servicing
Your
Air Bag-Equipped Cadillac” in the Index.
Headlamp Wiring
The headlamp wiring has an individual fuse which is
powered
by a MaxiFuse? 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.
MaxiFuse is a registered trademark of Little Fuse
Incorporated.
Windshield Wiper Fuses
The windshield wiper motor is powered by a MaxiFuse.
If the motor overheats due to heavy snow, etc., the
wipers will stop until the motor cools.
If the overload is
caused by some electrical problem, be sure to have. it fixed.
Power Windows and Other Power Options
Circuit breakers protect the power windows and other
power accessories. When the current load is too heavy,
the circuit breaker opens and closes, protecting the
circuit until the problem is fixed or goes away.
6-54

Downloaded from www.Manualslib.com manuals search engine Driving City
........................................ 4-20
Defensive
.................................... 4-1
Drunken
..................................... 4-2
Freeway
.................................... 4-21
InaBlizzard
................................. 4-27
In Foreign Countries ........................... 6-3
In the Rain .................................. 4- 17
Night
...................................... 4-15'
OnCurves .................................. 4-10
On Grades While Towing a Trailer ............... 4-38
On Hill and Mountain Roads
.................... 4-23
On Snow and Ice
............................. 4-26
Throughwater
............................... 4-19
WetRoads
.................................. 4-17
Winter
...................................... 4- 25
With a Trailer
................................ 4-36
Drunken Driving
................................ 4-2
ECC ......................................... 3-1
Electrical Equipment. Adding ........... 2.17.3.30. 6.54
Electrical System
............................... 6-54
Electrochromic Daymight Rearview Mirror
..... 2.46. 2.48
Electronic Climate Control
........................ 3- 1
Electronic Level Control ......................... 2-83
Electronic Solar Sensor
........................... 3-5
Engine
........................................ 6-8
Coolant ..................................... 6-20
Coolant Heater
............................... 2- 17
Exhaust ..................................... 2-28
FuseBlock .................................. 6-55 Identification
................................ 6-53
Overheating
................................. 5-15
Running While Parked
......................... 2-28
Specifications
................................ 6-63
StartingYour
................................ 2-16
Temperature Warning Light
..................... 2-68
Engine Oil
..................................... 6-9
Adding
..................................... 6-10
Additives
................................... 6-12
Checking
................................... 6-10
Used
....................................... 6-13
When
to Change .............................. 6-13
English/Metric Button
........................... 2-75
Exhaust. Engine
................................ 2-28
Engine Coolant Hot-Idle Engine Message ........... 2-78
Ethanol
........................................ 6-3
Express-Down Window .......................... 2-30
Exterior Lighting Battery Saver
.................... 2-43
Fabric Cleaning
............................... 6-45
Fan Control. Climate Control System
................ 3-2
Filling
Your Tank ................................ 6-4
Filter. Air
..................................... 6-14
Finish Care
.................................... 6-49
Finish Damage
................................. 6-51
First (1). Automatic Transaxle
..................... 2-22
Flashers. Hazard Warning
......................... 5-1
Flash-To-Pass Feature
........................... 2-32
Flat Tire. Changing
............................. 5-25
Floor Mats .................................... 2-55
8-4
.
..
1
-1
.
..
-

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Odometer .................................... 2-63
Odometer. Trip
.................................. 2-75
Off-Road Recovery ............................. 4- 12
Oil. Engine
..................................... 6-9
Oil Life Indicator
............................... 2-83
Oil Pressure Light
.............................. 2-7 1
Operation ...................................... 2-7
Overdrive
(0). Automatic Transaxle .... : ........... 2-21
Overheated Engine'Protection Operating Mode
....... 5-15
Overheating Engine
............................. 5- 15
Owner Publications
............................. 7- 12
Paint Spotting. Chemical
........................ 6-51
Park
(P)
Automatic Transaxle .......................... 2- 19
Shifting Into
................................. 2-24
Shifting Out
of .............. .. ................ 2-27
AtNight
.................................... 2-11
Brake
...................................... 2-23
Brake Indicator Light
.......................... 2-66
Lots ....................................... 2-11
Over Things That Bum
........................ 2-27
WithaTrailer
................................ 4-39
Pass
Key Not Programmed Message ................. 2-79
PASS-Key
II .................................. 2-13
PCM Fault Message ............................. 2-79
Power
.
AntennaMastC are ............................ 3-32
DoorLocks
................................... 2-4
OptionFuses
................................ 6-54
Remote Control Mirror
........................ 2-51
Parking
Passing
...................................... 4-13 Retained Accessory
........................... 2-16
Seatback Recliner
............................... 1-5
steering
...................................... 4-10
Steering
fluid ................................ 6-24
Windows ................................... 2-29
PowerSeat
..................................... 1-1
Lumbar Controls
.............................. 1-2
MemoryFunction
.............................. 1-3
Pregnancy. Use
of Safety Belts .................... 1-27
Problems
on the Road ............................ 5-1
Programmable Automatic Door Locks
............... 2-4
Publications. Service and Owner
................... 7-11
Pull-Down Feature. Automatic
.................... 2-11
Radio Reception
.............................. 3-30
Radios
............................. 3.10.3-14. 3.22
Rain. DrivingIn
................................ 4-17
Rainsense Wipers
............................... 2-34
RAP ......................................... 2-16
ReadingLamps
................................ 2-44
Rear Compartment
Fuse Block ....................... 6-60
Door Security Locks ........................... 2-5
Outside Seat Position
.......................... 1-29
Seat Passengers
.............................. 1-29
Storage Armrest
.............................. 2-52
Towing
................................. 5.9. 5.13
WmdowDefogger
............................. 3-9
WmdowLockout
............................. 2-30
Rearview Mirror. Electrochromic Daymight
.... 2.46. 2.48
Reclining Front Seatbacks
......................... 1-5
Reduced Engine Power Message
................... 2-79
Refrigerants. Air-conditioning
............... 6.64. 6.65
8-7

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Electrical System Message ...................... 2-80
Emissions System Message
..................... 2-80
Engine Cooling System Message
................. 2-80
Engine Soon Light
............................ 2-69
Fuel System Message
.......................... 2-80
Idle Control System Message
................... 2-80
Ignition System Message
........................ 2-80
Manuals. Ordering
............................ 7-1 1
Parts Identification Label
....................... 6-53
Publications. Ordering
......................... 7- 1 1
Ride Control Message ......................... 2-80
Transmission Message
......................... 2-80
Work. Doing Your Own
......................... 6- 1
Service and Appearance Care ...................... 6- 1
Service and Owner Publications
................... 7-1 1
Servicing
Your Air Bag-Equipped Cadillac .......... 1-26
Sheet Metal Damage
............................ 6-50
ShiftLever
.................................... 2-19
Shifting
Automatic Transaxle
.......................... 2- 19
Into Park (P) ................................. 2-24
Out
of Park (P) ................................ 2-27
Shoulder Belt Height Adjuster
..................... 1- 14
Shoulder Belt Tightness Adjustment
................ 1 - 14
SignalingTurns
................................ 2-31
SR .......................................... 1-20
Skidding
...................................... 4-14
Sound Equipment. Adding
........................ 3-30
Spare
Tire. Compact ............................. 5-35
Speaker Covers. Cleaning ........................ 6-47
Specifications and Capacities
................. 6-63. 6-64
Specifications. Engine
........................... 6-63
Speed Sensor Fault Message
...................... 2-80
Speech Impaired. Customer Assistance
............... 7-3 Speedometer
................................... 2-63
SSS .......................................... 4-10
Stains, Cleaning
................................ 6-46
Starting Disabled Due
To Theft System Remove
Ignition Key Message
.......................... 2-81
Starting Your Engine
............................ 2-16
Steam
.............................. 5-16,s-17, 5-20
Steering
...................................... 4-10
In Emergencies
............................... 4-11
MAGNASTEER
............................. 4-10
Power
...................................... 4-10
Speedsensitive .............................. 4-10
Tips
........................................ 4-10
Wheel, Tilt .................................. 2-31
Steering Wheel
Touch Control ................. 3-9, 3-29
Stop Engine Low Oil Pressure Message
............. 2-81
Stop Engine Overheated Message
................... 2-81
Storage Compartments
........................... 2-52
Storage, Vehicle
................................ 6-29
Stuck: In Sand, Mud, Ice
or Snow .................. 5-36
SunVisors
.................................... 2-54
Supplemental Inflatable Restraint
................... 1-20
Surge Tank, Coolant
........................ 5-18, 5-20
Surge Tank Pressure Cap
.......................... 6-23
Symbols, Vehicle
................................ xiii
Taillamp Bulb Replacement
...................... 6-33
TapePlayerCare
............................... 3-31
Telephone, Cellular
............................. 2-55
Temperature Control, Climate Control System
......... 3-2
Theft
......................................... 2-11
Theft System ProbledCar May
Not Restart Message . . 2-81
Theft-Deterrent System
.......................... 2-12
8-9