
Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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272 Vehicle Care
2. Turn the heater on to the highesttemperature and to the highest fan
speed. Open the windows as necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or N (Neutral), and
let the engine idle.
If the engine coolant temperature gauge is
no longer in the overheated area or the
engine coolant temperature warning light no
longer displays, the vehicle can be driven.
Continue to drive the vehicle slowly for
about 10 minutes. Keep a safe distance from
the vehicle in front. If the warning does not
come back on, continue to drive normally
and have the cooling system checked for
proper fill and function.
If the warning continues, pull over, stop, and
park the vehicle right away.
If there is no sign of steam, idle the engine
for three minutes while parked. If the
warning is still displayed, turn off the
engine until it cools down.
Washer Fluid
What to Use
When windshield washer fluid is needed, be
sure to read the manufacturer's instructions
before use. If operating the vehicle in an area where the temperature may fall below
freezing, use a fluid that has sufficient
protection against freezing.
Adding Washer Fluid
The appropriate message will appear in the
Driver Information Center (DIC) when the
fluid level is low.
Open the cap with the washer symbol on it.
Add washer fluid until the tank is full. See
Engine Compartment Overview
0263 for
reservoir location.
Caution
.Do not use washer fluid that contains
any type of water repellent coating.
This can cause the wiper blades to
chatter or skip.
.Do not use engine coolant (antifreeze)
in the windshield washer. It can
damage the windshield washer system
and paint.
(Continued)
Caution (Continued)
.Do not mix water with ready-to-use
washer fluid. Water can cause the
solution to freeze and damage the
washer fluid tank and other parts of
the washer system.
.When using concentrated washer fluid,
follow the manufacturer instructions
for adding water.
.Fill the washer fluid tank only
three-quarters full when it is very cold.
This allows for fluid expansion if
freezing occurs, which could damage
the tank if it is completely full.
Brakes
Disc brake linings have built-in wear
indicators that make a high-pitched warning
sound when the brake linings are worn and
new linings are needed. The sound can come
and go or can be heard all the time when
the vehicle is moving, except when applying
the brake pedal firmly.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 321
Caution
Towing the vehicle from the rear could
damage it. Also, repairs would not be
covered by the vehicle warranty. Never
have the vehicle towed from the rear.
Do not tow the vehicle from the rear.
Appearance Care
Exterior Care
Locks
Locks are lubricated at the factory. Use a
de-icing agent only when absolutely
necessary, and have the locks greased after
using. See Recommended Fluids and
Lubricants 0334.
Washing the Vehicle
To preserve the vehicle's finish, wash it
often and out of direct sunlight.
Caution
Do not use petroleum-based, acidic,
or abrasive cleaning agents as they can
damage the vehicle's paint, metal,
(Continued)
Caution (Continued)
or plastic parts. If damage occurs, it
would not be covered by the vehicle
warranty. Approved cleaning products can
be obtained from your dealer. Follow all
manufacturer directions regarding correct
product usage, necessary safety
precautions, and appropriate disposal of
any vehicle care product.
Caution
Avoid using high-pressure washes closer
than 30 cm (12 in) to the surface of the
vehicle. Use of power washers exceeding
8 274 kPa (1,200 psi) can result in
damage or removal of paint and decals.
If using an automatic car wash, follow the
car wash instructions. The windshield wiper
and rear window wiper, if equipped, must
be off. Remove any accessories that may be
damaged or interfere with the car wash
equipment.
Rinse the vehicle well, before washing and
after, to remove all cleaning agents
completely. If they are allowed to dry on
the surface, they could stain. 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.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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322 Vehicle Care
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
(Continued)
Caution (Continued)
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.
The bright metal moldings on the vehicle
are aluminum, chrome, or stainless steel. To
prevent damage always follow these
cleaning instructions:
.Be sure the molding is cool to the touch
before applying any cleaning solution.
.Use only approved cleaning solutions for
aluminum, chrome, or stainless steel.
Some cleaners are highly acidic or contain
alkaline substances and can damage the
moldings.
.Always dilute a concentrated cleaner
according to the manufacturer’s
instructions.
.Do not use cleaners that are not intended
for automotive use.
.Use a nonabrasive wax on the vehicle
after washing to protect and extend the
molding finish.
Cleaning Exterior Lamps/Lenses,
Emblems, Decals, and Stripes
Use only lukewarm or cold water, a soft
cloth, and a car washing soap to clean
exterior lamps, lenses, emblems, decals, and
stripes. Follow instructions under "Washing
the Vehicle" previously in this section.
Lamp covers are made of plastic, and some
have a UV protective coating. Do not clean
or wipe them when dry.
Do not use any of the following on lamp
covers:
.Abrasive or caustic agents.
.Washer fluids and other cleaning agents
in higher concentrations than suggested
by the manufacturer.
.Solvents, alcohols, fuels, or other harsh
cleaners.
.Ice scrapers or other hard items.

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Vehicle Care 323
.Aftermarket appearance caps or covers
while the lamps are illuminated, due to
excessive heat generated.
Caution
Failure to clean lamps properly can cause
damage to the lamp cover that would
not be covered by the vehicle warranty.
Caution
Using wax on low gloss black finish
stripes can increase the gloss level and
create a non-uniform finish. Clean low
gloss stripes with soap and water only.
Air Intakes
Clear debris from the air intakes, between
the hood and windshield, when washing the
vehicle.
Shutter System
The vehicle may have a shutter system
designed to help improve fuel economy.
Keep the shutter system clear of debris,
snow and ice. If the check engine light is
activated, please check to see if the shutter
system is clear of debris, snow or ice.
Windshield and Wiper Blades
Clean the outside of the windshield with
glass cleaner.
Clean rubber blades using a lint-free cloth or
paper towel soaked with windshield washer
fluid or a mild detergent. Wash the
windshield thoroughly when cleaning theblades. Bugs, road grime, sap, and a buildup
of vehicle wash/wax treatments may cause
wiper streaking.
Replace the wiper blades if they are worn or
damaged. Damage can be caused by
extreme dusty conditions, sand, salt, heat,
sun, snow, and ice.
Weatherstrips
Apply weatherstrip lubricant on
weatherstrips to make them last longer, seal
better, and not stick or squeak. Lubricate
weatherstrips at least once a year. Hot, dry
climates may require more frequent
application. Black marks from rubber
material on painted surfaces can be removed
by rubbing with a clean cloth. See
Recommended Fluids and Lubricants
0334.
Tires
Use a stiff brush with tire cleaner to clean
the tires.
Caution
Using petroleum-based tire dressing
products on the vehicle may damage the
paint finish and/or tires. When applying a
(Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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332 Service and Maintenance
suitable service maintenance intervals for
your vehicle, please contact your
authorized GM Dealer.
Extreme service is for vehicles mainly
driven off-road in four-wheel drive or used
in farming, mining, forestry, or snow
plowing.
Additional Required Services—Severe
Service
Every 72 000 km (45,000 mi)
.Change automatic transmission fluid.
Every 120 000 km (75,000 mi)
.Change rear axle fluid, if equipped with
AWD. Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate the
transfer case fluid. Contaminated fluid will
decrease the life of the transfer case and/
or axles and should be replaced.
Owner Checks and Services
Every Five Years
.Replace brake fluid every five years. See
Brake Fluid 0273. Every Seven Years
.Replace Air Conditioning Desiccant every
seven years. The air conditioning system
requires maintenance every seven years.
This service requires replacement of the
desiccant to help the longevity and
efficient operation of the air conditioning
system. This service can be complex. See
your dealer.
Multi-Point Vehicle
Inspection (MPVI)
A Multi Point Vehicle Inspection (MPVI)
completed by a GM dealer technician is a
maintenance assessment of your vehicle.
The benefit of the MPVI is to identify and
inform the customer of service items that
require immediate attention and those that
may require attention in the future.
The technician will perform the following
checks on your vehicle. For a complete list
of checks, inspections, and services, see your
dealer.
Some items may not apply to your vehicle
and/or region.
Diagnostics
.OnStar active, if equipped
.Service history/recall check
Engine Oil and Filter
.Engine oil
.Oil life monitor
‐
Reset oil life monitor
Exterior Lights
.Visual inspection
Windshield and Wipers
.Visual inspection
Battery
.Battery visual inspection
.Battery test results
.Battery cables and connections
Systems, Fluids, and Visible Leak
Inspection
.Engine oil
.Transmission
.Drive axle
.Transfer case
.Engine cooling system
.Power steering, if equipped
.Fuel system
.Windshield washer fluid

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334 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name or specification, including fluids or lubricants not listed here, can be obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission DEXRON-VI Automatic Transmission Fluid. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See Cooling
System 0268.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco
dexos1 full synthetic is recommended. See Engine Oil0264.
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol or lubricant meeting requirements of NLGI #2, Category LB
or GC-LB.
Hydraulic Brake System DOT 4 Hydraulic Brake Fluid.
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube. See your dealer. Front Axle/Rear Axle See your dealer.
Transfer Case (All-Wheel Drive) Transfer Case Fluid. See your dealer. Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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364 Index
Engine (cont'd)Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 118
Running While Parked . . . . . . . . . . . . . . . . . . 181
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 256
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 350
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 180
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . . 51
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . . . . . . 122
Lamps Off Reminder . . . . . . . . . . . . . . . . . . . 124
Lighting Battery Saver . . . . . . . . . . . . . . . . . 129
F
Filter
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 267
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . 127
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Fluid Automatic Transmission . . . . . . . . . . . . . . . 266
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Front Heated and Ventilated Seats . . . . . . . . . . . . 42
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Economy, Driving for Better . . . . . . . . . . . 163
Filling a Portable Fuel Container . . . . . . . 249
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 248
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 248
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Low Fuel Warning Light . . . . . . . . . . . . . . . 109
Management, Active . . . . . . . . . . . . . . . . . . . 180
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 247
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 247
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Fuses Engine Compartment Fuse Block . . . . . . . 281
Fuses and Circuit Breakers . . . . . . . . . . . . . 280
Instrument Panel Fuse Block . . . . . . . . . . . 284
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . 119Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Gauges
Engine Coolant Temperature . . . . . . . . . . . . 99 Gauges (cont'd)
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . . 98
Engine Oil Temperature . . . . . . . . . . . . . . . . . 99
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Warning Lights and Indicators . . . . . . . . . . 94
Gear Shifting Light . . . . . . . . . . . . . . . . . . . . . . . 105
General Information Service and Maintenance . . . . . . . . . . . . . . 329
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Global Positioning System (GPS) . . . . . . . . . . 141
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Guidance Problems with the Route . . . . . . . . . . . . . . 142
H
Hazard Warning Flashers . . . . . . . . . . . . . . . . . 127
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Head-Up Display (HUD) . . . . . . . . . . . . . . . . . . . 115
HeadlampsAdaptive Forward Lighting (AFL) . . . . . . . 125
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

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368 Index
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . . 51
PrivacyVehicle Data Recording . . . . . . . . . . . . . . . . 349
Problems with Route Guidance . . . . . . . . . . .142
Program Courtesy Transportation . . . . . . . . . . . . . . . 345
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . 247
Proposition 65 Warning
California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Proposition 65 Warning, California . . . . . . . . 315
Publication Ordering Information . . . . . . . . 348
R
Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Radio AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Frequency Statement . . . . . . . . . . . . . . . . . . 348
Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . .128
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Heated Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Window Washer/Wiper . . . . . . . . . . . . . . . . . 90
Rearview Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 28 Automatic Dimming . . . . . . . . . . . . . . . . . . . . 29 Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . 38
Recognition
Voice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Recommended Fluids and Lubricants . . . . . 334
Records Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Recreational Vehicle Towing . . . . . . . . . . . . . .318
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Remote Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Key Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Vehicle Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Replacement Parts
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Replacing Airbag System . . . . . . . . . . . . . . . . . . . . . . . . . . 62
LATCH System Parts After a Crash . . . . . . 76
Seat Belt System Parts after a Crash . . . . 52
Reporting Safety Defects Canadian Government . . . . . . . . . . . . . . . . . 349
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 349
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 348
Restraints Where to Put . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Retained Accessory Power (RAP) . . . . . . . . . 179
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . . . 28
Roads
Driving, Wet . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Roadside Assistance Program . . . . . . . . . . . . 343
Roof Rack System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Routing, Engine Drive Belt . . . . . . . . . . . . . . . 339
Running the Vehicle While Parked . . . . . . . . 181
S
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Safety Defects Reporting Canadian Government . . . . . . . . . . . . . . . . . 349
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 349
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 348
Safety System Check . . . . . . . . . . . . . . . . . . . . . .52
Satellite Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Scheduling Appointments . . . . . . . . . . . . . . . . 345
Sealant Kit, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . 46
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
How to Wear Seat Belts Properly . . . . . . . 47