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VEHICLE CARE 293
SeeDriver Information Center (DIC)
0 115. When remaining oil life is
low, the CHANGE ENGINE OIL
SOON message will appear on the
display.
2. Press
Von the DIC controls and
hold down for a few seconds to
clear the CHANGE ENGINE OIL
SOON message and reset the oil life
at 100%.
Be careful not to reset the oil life
display accidentally at any time
other than after the oil is changed.
It cannot be reset accurately until
the next oil change.
The system is reset when the
CHANGE ENGINE OIL SOON message
is off.
If the CHANGE ENGINE OIL SOON
message comes back on when the
vehicle is started, the engine oil life
system has not been reset. Repeat the
procedure.
Automatic Transmission
Fluid
A transmission fluid leak is the only
reason for fluid loss. If a leak occurs,
take the vehicle to your dealer and
have it repaired as soon as possible.
Caution
Use of the incorrect automatic
transmission fluid may damage the
vehicle, and the damage may not be
covered by the vehicle warranty.
Always use the correct automatic
transmission fluid. See
Recommended Fluids and Lubricants
0 377.
See your dealer to have the fluid and
filter changed at the intervals listed in
the Maintenance Schedule 0368.
Engine Air Filter Life
System
If equipped, this feature provides the
engine air filter's remaining life and
best timing for a change. The timing to change an engine air filter depends
on driving and environmental
conditions.
When to Change Engine Air
Filter
When the Driver Information Center
(DIC) displays a message to replace
the engine air filter at the next oil
change, follow this timing.
When the DIC displays a message to
replace the engine air filter soon,
replace the engine air filter at the
earliest convenience. The system must
be reset after the engine air filter is
changed.
If the DIC displays a message to check
the engine air filter system, see your
dealer.
How to Reset Engine Air Filter
Life System
To reset:
1. Place the vehicle in P (Park).
2. Display the Air Filter Life on the DIC. See Driver Information Center
(DIC) 0115.

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What to Use
{Warning
Do not touch heater or radiator
hoses, or other engine parts. They
can be very hot and can burn you.
Do not run the engine if there is a
leak; all coolant could leak out.
That could cause an engine fire and
can burn you. Fix any leak before
driving the vehicle.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. This mixture:
.Gives freezing protection down to
−37 °C (−34 °F), outside temperature.
.Gives boiling protection up to
129 °C (265 °F), engine temperature.
.Protects against rust and corrosion.
.Will not damage aluminum parts.
.Helps keep the proper engine
temperature.
Caution
Do not use anything other than a
mix of DEX-COOL coolant that
meets GM Standard GMW3420 and
clean, drinkable water. Anything
else can cause damage to the
engine cooling system and the
vehicle, which would not be covered
by the vehicle warranty.
Never dispose of engine coolant by
putting it in the trash, pouring it on
the ground, or pouring into sewers,
streams, or bodies of water. Have the
coolant changed by an authorized
service center, familiar with legal
requirements regarding used coolant
disposal. This will help protect the
environment and your health.
Checking Coolant
The vehicle must be on a level surface
when checking the coolant level.
Check to see if coolant is visible in the
coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down. If coolant is visible but
the coolant level mark is not at or
above the indicated mark, add a 50/
50 mixture of clean, drinkable water
and DEX-COOL coolant. Be sure the
cooling system is cool before this is
done. See Engine Overheating 0298.
The coolant surge tank is in the
engine compartment on the driver
side of the vehicle. See Engine
Compartment Overview 0289.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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FusesUsage
43 HTD/STR/WHL –
Heated Steering
Wheel/Spare
–
44 FRT HTD 1 & VENT ST–Front Heated
Seat Power Feed 1/
Front Vented Seats/
Rear Heated Seats/
Spare
–
46 ECM IGN –Engine
Control Module
Ignition
48 RDCM 2 –Rear Drive
Control Module 2/
Spare
–
49 HVAC BLOWR MTR –
Heating Ventilation
and Air Conditioning
Control Blower Motor
50 Spare
51 Spare Fuses
Usage
54 Spare
55 Spare
56 STRTR MTR –Starter
Motor
57 –
58 –
59 HDLP HI BEAM LT/ RT–High Beam
Headlamps
60 TIM 1 –Not Used
61 Spare
62 Spare
63 Spare
65 A/C CLUTCH –Air
Conditioning Clutch
67 Spare
68 Spare
69 –
70 TRLR PRK LAMP –
Trailer Park Lamp
– Fuses
Usage
72 STRTR PINION –
Starter Pinion
75 ECM MAIN –Engine
Control Module Main
76 PT OFF ENG –
Powertrain Off Engine
– Engine Control
Module Power Train
Ignition 1
78 Horn
79 WASH PMP –Front
and Rear
Washer Pump
81 TCM/ECM/COOL PUMP–Engine
Control Module
Battery/Spare
82 NOx SNSR –
Not Used
83 IGN COIL –Ignition
Coils

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Tire Terminology and
Definitions
Air Pressure:The amount of air
inside the tire pressing outward
on each square inch of the tire.
Air pressure is expressed in kPa
(kilopascal) or psi (pounds per
square inch).
Accessory Weight
:The combined
weight of optional accessories.
Some examples of optional
accessories are automatic
transmission, power windows,
power seats, and air conditioning.
Aspect Ratio
:The relationship of
a tire's height to its width.
Belt
:A rubber coated layer of
cords between the plies and the
tread. Cords may be made from
steel or other reinforcing
materials.
Bead
:The tire bead contains steel
wires wrapped by steel cords that
hold the tire onto the rim. Bias Ply Tire
:A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline
of the tread.
Cold Tire Pressure
:The amount
of air pressure in a tire, measured
in kPa (kilopascal) or psi (pounds
per square inch) before a tire has
built up heat from driving. See
Tire Pressure 0325.
Curb Weight
:The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil, and
coolant, but without passengers
and cargo.
DOT Markings
:A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S.
Department of Transportation
(DOT) Motor Vehicle Safety
Standards. The DOT code includes
the Tire Identification Number
(TIN), an alphanumeric designator which can also identify the tire
manufacturer, production plant,
brand, and date of production.
GVWR
:Gross Vehicle Weight
Rating. See Vehicle Load Limits
0 214.
GAWR FRT
:Gross Axle Weight
Rating for the front axle. See
Vehicle Load Limits 0214.
GAWR RR
:Gross Axle Weight
Rating for the rear axle. See
Vehicle Load Limits 0214.
Intended Outboard Sidewall
:
The side of an asymmetrical tire
that must always face outward
when mounted on a vehicle.
Kilopascal (kPa)
:The metric unit
for air pressure.
Light Truck (LT-Metric) Tire
:A
tire used on light duty trucks and
some multipurpose passenger
vehicles.

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Warning (Continued)
used; however, use a scraper or
wire brush later to remove all
rust or dirt.
10. Remove any rust or dirt from thewheel bolts, mounting surfaces,
and spare wheel.
11. Place the compact spare tire on the wheel-mounting surface.
{Warning
Never use oil or grease on bolts or
nuts because the nuts might come
loose. The vehicle's wheel could fall
off, causing a crash.
12. Reinstall the wheel nuts. Tighten each nut by hand until the wheel is
held against the hub.
13. Lower the vehicle by turning the jack handle counterclockwise.
{Warning
Wheel nuts that are improperly or
incorrectly tightened can cause the
wheels to become loose or come off.
The wheel nuts should be tightened
with a torque wrench to the proper
torque specification after replacing.
Follow the torque specification
supplied by the aftermarket
manufacturer when using accessory
locking wheel nuts. See Capacities
and Specifications 0381 for original
equipment wheel nut torque
specifications.
Caution
Improperly tightened wheel nuts
can lead to brake pulsation and
rotor damage. To avoid expensive
brake repairs, evenly tighten the
wheel nuts in the proper sequence
and to the proper torque
specification. See Capacities and
Specifications 0381 for the wheel
nut torque specification.
14. Tighten the wheel nuts firmly in a crisscross sequence, as shown.
15. Lower the jack all the way and remove the jack from under the
vehicle.

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Dry the finish with a soft, clean
chamois or an all-cotton towel to
avoid surface scratches and water
spotting.
Cleaning Underhood Components
Caution
Do not power wash any component
under the hood that has this
e
symbol.
This could cause damage that
would not be covered by the vehicle
warranty.
Solvents or aggressive cleaners may
harm underhood components. The
usages of these chemicals should be
avoided.
Recommend water only.
A pressure washer may be used, but
care must be utilized. The following
criteria must be followed:
.Water pressure must be kept below
14 000 KPa (2,000 PSI).
.Water temperature must be below
80 °C (180 °F).
.Spray nozzle with a 40 degree wide
angle spray pattern or wider must
be used.
.Nozzle must be kept at least 30 cm
(1 ft) away from all surfaces.
Finish Care
Application of aftermarket clearcoat
sealant/wax is not recommended.
If painted surfaces are damaged, see
your dealer to have the damage
assessed and repaired. Foreign
materials such as calcium chloride
and other salts, ice melting agents,
road oil and tar, tree sap, bird
droppings, chemicals from industrial
chimneys, etc., can damage the
vehicle's finish if they remain on
painted surfaces. Wash the vehicle as
soon as possible. If necessary, use
non-abrasive cleaners that are marked
safe for painted surfaces to remove
foreign matter.
Occasional hand waxing or mild
polishing should be done to remove
residue from the paint finish. See your
dealer for approved cleaning products. Do not apply waxes or polishes to
uncoated plastic, vinyl, rubber, decals,
simulated wood, or flat paint as
damage can occur.
Caution
Machine compounding or
aggressive polishing on a basecoat/
clearcoat paint finish may damage
it. Use only non-abrasive waxes and
polishes that are made for a
basecoat/clearcoat paint finish on
the vehicle.
To keep the paint finish looking new,
keep the vehicle garaged or covered
whenever possible.
Protecting Exterior Bright Metal
Moldings
Caution
Failure to clean and protect the
bright metal moldings can result in
a hazy white finish or pitting. This
damage would not be covered by
the vehicle warranty.

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Caution
Immediately remove cleaners, hand
lotions, sunscreen, and insect
repellent from all interior surfaces
or permanent damage may result.
Caution
Use cleaners specifically designed
for the surfaces being cleaned to
prevent permanent damage to the
vehicle. Apply all cleaners directly
to a cleaning cloth. Do not spray
cleaners on any switches or
controls.
When using liquid soap cleaners,
follow the directions on the specific
cleaner or soap solution for dilution
instructions.
Caution
To prevent damage:
.Never use a razor or any other
sharp object to remove soil from
any interior surface (Continued)
Caution (Continued)
.Never use a brush with stiff
bristles.
.Never rub any surface
aggressively or with too much
pressure.
.Do not get any exposed electrical
components wet.
.Do not use laundry detergents or
dishwashing soaps with
degreasers. Do not use solutions
that contain strong or
caustic soap.
.Do not heavily saturate the
upholstery when cleaning.
.Do not use solvents or cleaners
containing solvents.
.Do not use disinfecting wipes
that are scented or contain
bleach. Do not use wipes or
cleaners that show a color
transfer to the wipe or change
the appearance of the interior
surface when used.
(Continued)
Caution (Continued)
.Do not use scented or gel-type
hand sanitizers. If hand sanitizer
comes in contact with interior
surfaces of the vehicle, blot
immediately and clean with a
soft cloth dampened with a mild
soap and water solution.
Interior Glass
To clean, use a microfiber cloth fabric
dampened with water. Wipe droplets
left behind with a clean dry cloth.
If necessary, use a commercial glass
cleaner after cleaning with plain water.
Caution
To prevent scratching, never use
abrasive cleaners on automotive
glass. Abrasive cleaners or
aggressive cleaning may damage
the rear window defogger.
Cleaning the windshield with water
during the first three to six months of
ownership will reduce tendency to fog.

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Speaker Covers
Vacuum around a speaker cover
gently, so that the speaker will not be
damaged. Clean spots with water and
mild soap.
Coated Moldings
Coated moldings should be cleaned.
.When lightly soiled, wipe with a
sponge or soft, lint-free cloth
dampened with water.
.When heavily soiled, use warm
soapy water.
Vinyl/Rubber
If equipped with vinyl floor and
rubber floor mats, use a soft cloth
and/or brush dampened with water to
remove dust and loose dirt. For more
thorough cleaning, use a mild soap
and water solution.
{Warning
Do not use cleaners that contain
silicone, wax-based products,
or cleaners that increase gloss on
vinyl/rubber floor and mats. These(Continued)
Warning (Continued)
cleaners can permanently change
the appearance and feel of the
vinyl/rubber and can make the floor
slippery. Your foot could slip while
operating the vehicle, and you
could lose control, resulting in a
crash. You or others could be
injured.
Fabric/Carpet/Suede
Start by vacuuming the surface using
a soft brush attachment. If a rotating
vacuum brush attachment is being
used, only use it on the floor carpet.
Before cleaning, gently remove as
much of the soil as possible:
.Gently blot liquids with a paper
towel. Continue blotting until no
more soil can be removed.
.For solid soils, remove as much as
possible prior to vacuuming.
To clean: 1. Saturate a clean, lint-free colorfast cloth with water. Microfiber cloth is
recommended to prevent lint
transfer to the fabric or carpet. 2. Remove excess moisture by gently
wringing until water does not drip
from the cleaning cloth.
3. Start on the outside edge of the soil and gently rub toward the
center. Fold the cleaning cloth to a
clean area frequently to prevent
forcing the soil into the fabric.
4. Continue gently rubbing the soiled area until there is no longer any
color transfer from the soil to the
cleaning cloth.
5. If the soil is not completely removed, use a mild soap solution
followed only by plain water.
If the soil is not completely removed,
it may be necessary to use a
commercial upholstery cleaner or spot
lifter. Test a small hidden area for
colorfastness before using a
commercial upholstery cleaner or spot
lifter. If ring formation occurs, clean
the entire fabric or carpet.
After cleaning, use a paper towel to
blot excess moisture.