2004 CADILLAC DEVILLE oil pressure

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-7
Horn.............................................................3-7
Tilt Wheel.....................................................3-7
Heated Steering Wheel...................................3-8
Turn Signal/Multifunction Lever.........................3-9
Exterior Lamps.............................................3-17
Interior Lamps..............................................3-22
Night Vision System......................................3-25
Ultrasonic Rear Parking Assist (URPA)............3-28
Accessory Power Outlets...............................3-30
Ashtrays and Cigarette Lighter........................3-31
Climate Controls............................................3-32
Dual Climate Control System..........................3-32
Outlet Adjustment.........................................3-37
Rear Climate Control System.........................3-38
Passenger Compartment Air Filter...................3-40
Steering Wheel Climate Controls.....................3-42
Climate Controls Personalization.....................3-43
Warning Lights, Gages, and Indicators............3-44
Instrument Panel Cluster................................3-44
Speedometer and Odometer...........................3-47
Trip Odometer..............................................3-47
Tachometer (Analog Cluster Only)...................3-49Safety Belt Reminder Light.............................3-49
Air Bag Readiness Light................................3-50
Charging System Light..................................3-51
Brake System Warning and Parking Brake
Indicator Light...........................................3-51
Anti-Lock Brake System Warning Light.............3-52
Traction Control System (TCS) Warning Light......3-53
Engine Coolant Temperature Warning Light......3-54
Engine Coolant Temperature Gage..................3-54
Malfunction Indicator Lamp.............................3-55
Oil Pressure Light.........................................3-58
Security Light...............................................3-59
Fog Lamp Light............................................3-59
Lights On Reminder......................................3-60
Cruise Control Light......................................3-60
Fuel Gage...................................................3-60
Fuel Data Display (Digital Cluster Only)...........3-61
Driver Information Center (DIC).......................3-62
DIC Controls and Displays.............................3-62
DIC Warnings and Messages.........................3-65
Climate Controls and Radio System
Personalization..........................................3-73
DIC Vehicle Personalization............................3-74
Trip Computer................................................3-89
Oil Life Indicator...........................................3-89
Section 3 Instrument Panel
3-1

Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have or
may begin programs to inspect the emission control
equipment on your vehicle. Failure to pass this inspection
could prevent you from getting a vehicle registration.
Here are some things you need to know in order to help
your vehicle pass an inspection:
Your vehicle will not pass this inspection if the SERVICE
ENGINE SOON or CHECK ENGINE light is on or not
working properly.
Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that critical
emission control systems have not been completely
diagnosed by the system. The vehicle would be
considered not ready for inspection. This can happen if
you have recently replaced your battery or if your
battery has run down. The diagnostic system is
designed to evaluate critical emission control systems
during normal driving. This may take several days
of routine driving. If you have done this and your vehicle
still does not pass the inspection for lack of OBD
system readiness, your GM dealer can prepare the
vehicle for inspection.
Oil Pressure Light
{CAUTION:
Do not keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches re. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice:Lack of proper engine oil maintenance may
damage the engine. The repairs would not be
covered by your warranty. Always follow the
maintenance schedule in this manual for changing
engine oil.
3-58

This light tells you if there
could be a problem with
your engine oil pressure.
The light goes on when you turn your key to ON or
START. It goes off once you start your engine. That is a
check to be sure the light works. If it does not come
on, be sure to have it xed so it will be there to warn you
if something goes wrong.
When the light comes on and stays on, it means that oil
is not owing through your engine properly. You
could be low on oil and you might have some other
system problem.Security Light
For information regarding
this light, see
Theft-Deterrent Systems
on page 2-19.
Fog Lamp Light
This light will come on
when the fog lamps are in
use. It will go out when the
fog lamps are turned off.
For more information about the fog lamps, see “Fog
Lamps” underExterior Lamps on page 3-17.
3-59

ENGINE OIL LIFE:Press the INFO button to display
ENGINE OIL LIFE, then press and hold the INFO
RESET button until 100% ENGINE OIL LIFE is
displayed. (This only needs to be reset after you
have had the oil changed.)
TRANSMISSION FLUID LIFE:Under normal
conditions, the rate of deterioration of the
transmission uid is slow. SeeScheduled
Maintenance on page 6-4for proper uid and change
intervals. To reset the transmission uid life, press
the INFO button to display TRANS FLUID LIFE, then
press and hold the INFO RESET button until 100%
TRANS FLUID LIFE is displayed. (This only needs to
be reset after you have had the uid changed.)
ON/OFF:Pressing this button turns the Programming
and Personalization Features on and off. (FEATURE
PROGRAMMING must be displayed on the DIC to begin
actual programming.) This button also starts and
stops the timer.
MILES RANGE:(Analog Cluster Only) This message
shows about how many miles you can drive without
relling your fuel tank. Once the range drops below
40 miles (64 km) remaining, the display will show LOW.MPG INST (Instantaneous Miles per Gallon):This
message shows the instantaneous fuel economy which
varies with your driving conditions, such as acceleration,
braking and the grade of the road being traveled.
The INFO RESET button does not function in this mode.
BATTERY VOLTS:This message shows the current
battery voltage. If the voltage is normal the display
will show BATTERY VOLTS OK. If the voltage drops
below 10.5 volts, the display will show BATTERY
VOLTS LOW. If the voltage is above 16 volts, the
display will show BATTERY VOLTS HIGH. If the display
shows the high or low message, you will need to
have your battery checked. SeeDIC Warnings and
Messages on page 3-65for more information.
LF-RF-LR-RR TIRE:On vehicles equipped with the tire
pressure monitor, this message shows the tire pressure
for each tire (left front, right front, left rear and right rear).
Pressing the INFO button will scroll through the tire
pressure for each of the four tires, such as:
34 PSI LF TIRE OK or
234 kPa LF TIRE OK
If a tire pressure is below 25 PSI (172 kPa) or above
38 PSI (265 kPa), the message will appear as shown
above except it will show TIRE LOW or TIRE HIGH as
appropriate. If desired, the tire pressure information
can be programmed not to appear when using the INFO
button to scroll through the DIC displays. SeeDIC
Vehicle Personalization on page 3-74.
3-64

CHECK OIL LEVEL – 36:For correct operation of the
low oil sensing system, your vehicle should be on a
level surface. A false CHECK OIL LEVEL message may
appear if the vehicle is parked on a grade. The oil
level sensing system does not check for actual oil level
if the engine has been off for a short period of time,
and the oil level is never checked while the engine is
running. If the CHECK OIL LEVEL message appears,
and your vehicle has been parked on level ground
with the engine off for at least 30 minutes, the oil level
should be checked by observing the oil dipstick. Prior to
checking the oil level, be sure the engine has been
off for a few minutes and your vehicle is on a level
surface. Then check the dipstick and add oil if
necessary. SeeEngine Oil on page 5-15.CHECK TIRE PRESSURE – 144:This message is
displayed when the Tire Pressure Monitor (TPM) system
detects a low or high tire pressure condition in one or
more of the road tires. By pressing the INFO button
up or down, the DIC display will show which tire or tires
do not have the correct ination pressure. A “LOW
TIRE” condition exists when the tire’s air pressure is
under 25 psi (172 kPa) and a “HIGH TIRE” condition
exists when the tire’s air pressure is above 38 psi
(262 kPa). The system will display the air pressure, the
tire location (LF, RF, RR or LR) and if the air pressure
is low or high. The tire pressure information is available
in English or metric measurements. For example, a
driver’s side front tire that is low may be shown
as: 22 PSI LF TIRE LOW.
3-67

ICE POSSIBLE – 13:This message appears when the
outside air temperature is cold enough to create icy
road conditions.
LEFT REAR DOOR AJAR – 142:The left rear door is
open or ajar when this message appears. The ignition
must be in ON and the transaxle not in PARK (P) for this
message to display. A chime will sound if the vehicle’s
speed is greater than 3 mph (5 km/h).
OIL PRESSURE LOW STOP ENGINE – 35:If this
message appears while the engine is running, stop the
engine and do not operate it until the cause of low
oil pressure is corrected. Severe damage to the engine
can result. A multiple chime will sound when this
message is displayed.
PASSENGER DOOR AJAR – 141:The right front
passenger’s door is open or ajar when this message
appears. The ignition must be in ON and the transaxle
not in PARK (P) for this message to display. A chime
will sound if the vehicle’s speed is greater than
3 mph (5 km/h).
RIGHT REAR DOOR AJAR – 143:The right rear door
is open or ajar when this message appears. The
ignition must be in ON and the transaxle not in PARK (P)
for this message to display. A chime will sound if the
vehicle’s speed is greater than 3 mph (5 km/h).SERVICE AC SYSTEM – 14:This message appears
when the electronic sensors that control the air
conditioning and heating systems are no longer working.
Have the climate control system serviced if you notice
a drop in heating and air conditioning efficiency.
SERVICE AIR BAG – 83:There is a problem with the
air bag system when this message appears. Let
only a qualied technician work on your vehicle. Have
your vehicle serviced by your dealership immediately.
SERVICE CHARGING SYS – 102:This message
will display when a problem with the charging system
has been detected. Have your vehicle serviced at
your dealership.
SERVICE ELECTRICAL SYS – 106:This message will
display if an electrical problem has occurred within
the Powertrain Control Module (PCM) or the ignition
switch. Have your vehicle serviced by your dealership.
SERVICE FUEL SYSTEM – 101:The Powertrain
Control Module (PCM) has detected a problem within
the fuel system when this message appears. Have your
vehicle serviced by your dealership.
3-70

Here are some things you can check before a trip:
Windshield Washer Fluid:Is the reservoir full? Are
all windows clean inside and outside?
Wiper Blades:Are they in good shape?
Fuel, Engine Oil, Other Fluids:Have you checked
all levels?
Lamps:Are they all working? Are the lenses clean?
Tires:They are vitally important to a safe,
trouble-free trip. Is the tread good enough for
long-distance driving? Are the tires all inated to the
recommended pressure?
Weather Forecasts:What is the weather outlook
along your route? Should you delay your trip a
short time to avoid a major storm system?
Maps:Do you have up-to-date maps?
Highway Hypnosis
Is there actually such a condition as “highway hypnosis”?
Or is it just plain falling asleep at the wheel? Call it
highway hypnosis, lack of awareness, or whatever.
There is something about an easy stretch of road with
the same scenery, along with the hum of the tires on the
road, the drone of the engine, and the rush of the
wind against the vehicle that can make you sleepy. Do
not let it happen to you! If it does, your vehicle can
leave the road inless than a second,and you could
crash and be injured.
What can you do about highway hypnosis? First, be
aware that it can happen.
Then here are some tips:
Make sure your vehicle is well ventilated, with a
comfortably cool interior.
Keep your eyes moving. Scan the road ahead and
to the sides. Check your rearview mirrors and your
instruments frequently.
If you get sleepy, pull off the road into a rest,
service or parking area and take a nap, get some
exercise, or both. For safety, treat drowsiness
on the highway as an emergency.
4-25

Service............................................................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of Your
Vehicle......................................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Specications....................................5-5
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling Your Tank............................................5-8
Filling a Portable Fuel Container.....................5-12
Checking Things Under the Hood....................5-12
Hood Release..............................................5-13
Engine Compartment Overview.......................5-14
Engine Oil...................................................5-15
Engine Air Cleaner/Filter................................5-22
Automatic Transaxle Fluid..............................5-24
Engine Coolant.............................................5-27
Coolant Surge Tank Pressure Cap..................5-31
Engine Overheating.......................................5-31
Cooling System............................................5-34
Power Steering Fluid.....................................5-40
Windshield Washer Fluid................................5-41
Brakes........................................................5-43Battery........................................................5-46
Jump Starting...............................................5-48
Headlamp Aiming...........................................5-55
Headlamp Horizontal Aiming...........................5-56
Headlamp Vertical Aiming..............................5-57
Bulb Replacement..........................................5-59
Halogen Bulbs..............................................5-59
Headlamps..................................................5-59
Front Turn Signal, Sidemarker, Parking and
Cornering Lamps.......................................5-63
Center High-Mounted Stoplamp (CHMSL).........5-64
Taillamps, Turn Signal, and Stoplamps............5-64
Replacement Bulbs.......................................5-64
Windshield Wiper Blade Replacement..............5-65
Tires..............................................................5-66
Ination - Tire Pressure.................................5-74
Tire Pressure Monitor Operation.....................5-76
Tire Inspection and Rotation...........................5-78
When It Is Time for New Tires.......................5-79
Buying New Tires.........................................5-80
Uniform Tire Quality Grading..........................5-81
Wheel Alignment and Tire Balance..................5-82
Wheel Replacement......................................5-82
Tire Chains..................................................5-84
Section 5 Service and Appearance Care
5-1