2021 CADILLAC ESCALADE check engine light

Cadillac Escalade Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13690472) - 2021 - CRC - 8/10/21
INSTRUMENTS AND CONTROLS 123
Caution (Continued)
the original tire specifications, can
cause this light to come on. This
could lead to costly repairs not
covered by the vehicle warranty.
This could also affect the vehicle’s
ability to pass an Emissions
Inspection/Maintenance test. See
Accessories and Modifications0364.
If the light is f lashing : A
malfunction has been detected that
could damage the emission control
system and increase vehicle
emissions. Diagnosis and service may
be required.
To help prevent damage, reduce
vehicle speed and avoid hard
accelerations and uphill grades.
If towing a trailer, reduce the amount
of cargo being hauled as soon as
possible.
If the light continues to flash, find a
safe place to park. Turn the vehicle off
and wait at least 10 seconds before
restarting the engine. If the light is still flashing, follow the previous
guidelines and see your dealer for
service as soon as possible.
If the light is on steady :
A
malfunction has been detected.
Diagnosis and service may be
required.
Check the following:
.If fuel has been added to the vehicle
using the capless fuel funnel
adapter, make sure that it has been
removed. See “Filling the Tank with
a Portable Gas Can ”under Filling the
Tank 0327. The diagnostic system
can detect if the adapter has been
left installed in the vehicle, allowing
fuel to evaporate into the
atmosphere. A few driving trips with
the adapter removed may turn off
the light.
.Poor fuel quality can cause
inefficient engine operation and
poor driveability, which may go
away once the engine is warmed up.
If this occurs, change the fuel
brand. It may require at least one
full tank of the proper fuel to turn
the light off. See Recommended Fuel
0 326. If the light remains on, see your
dealer.
Emissions Inspection and
Maintenance Programs
If the vehicle requires an Emissions
Inspection/Maintenance test, the test
equipment will likely connect to the
vehicle's Data Link Connector (DLC).
The DLC is under the instrument
panel to the left of the steering wheel.
Connecting devices that are not used
to perform an Emissions Inspection/
Maintenance test or to service the
vehicle may affect vehicle operation.
See
Add-On Electrical Equipment 0360.
See your dealer if assistance is needed.
The vehicle may not pass
inspection if:
.The light is on when the engine is
running.

Cadillac Escalade Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13690472) - 2021 - CRC - 8/10/21
130 INSTRUMENTS AND CONTROLS
Engine Oil Pressure Light
Caution
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
The repairs would not be covered
by the vehicle warranty. Check the
oil level as soon as possible. Add oil
if required, but if the oil level is
within the operating range and the
oil pressure is still low, have the
vehicle serviced. Always follow the
maintenance schedule for changing
engine oil.
This light should come on briefly as
the engine is started. If it does not
come on, have the vehicle serviced by
your dealer.If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle could
be low on oil and might have some
other system problem. See your dealer.
Low Fuel Warning Light
A Low Fuel Warning Light near the
fuel gauge comes on briefly when the
ignition is turned on as a check to
show it is working.
It also comes on when the fuel gauge
indicator nears empty. The light turns
off when fuel is added. If it does not,
have the vehicle serviced.
Security Light
The security light should come on
briefly as the engine is started. If it
does not come on, have the vehicle
serviced by your dealer. If the system
is working normally, the indicator
light turns off.
If the light stays on and the engine
does not start, there could be a
problem with the theft-deterrent
system. See
Immobilizer Operation
0 31.
High-Beam On Light

Cadillac Escalade Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13690472) - 2021 - CRC - 8/10/21
132 INSTRUMENTS AND CONTROLS
Door Ajar Light
This light comes on when a door is
open or not securely latched. Before
driving, check that all doors are
properly closed.
Information Displays
Driver Information
Center (DIC)
The DIC is displayed in the
instrument cluster. It shows the status
of many vehicle systems.
DIC information is broken down into
three main zones:
Zone 1 :A touchscreen display to left
of the instrument cluster.
Zone 2 : Displays on the instrument
cluster to the left of the speedometer. Zone 3 :
Displays on the instrument
cluster to the right of the
speedometer.
yorz: Use the thumbwheel to
scroll to the previous or next
selection.
V: Press the thumbwheel to open a
menu or select a menu item. Press
and hold to reset certain displays.
DIC Information Display Options
Select which info display to view on
the DIC through the Settings menu,
or by selecting show in cluster in the
Vehicle Information on the infotainment display. See
Settings
0 203 or
Vehicle Information 0134.
If the vehicle has a diesel engine, see
the Duramax diesel supplement for
more information.
DIC Information Displays
The following is the list of all possible
DIC information displays and their
locations. Some of the information
displays may not be available for your
particular vehicle.
Zone 1
Trip 1 or Trip 2 and Average Fuel
Economy : The Trip display shows the
current distance traveled, in either
kilometers (km) or miles (mi), since
the trip odometer was last reset. To
reset the current trip, touch and hold
the touchscreen display when trip
odometer is displayed.
The Average Fuel Economy display
shows the approximate average liters
per 100 kilometers (L/100 km) or
miles per gallon (mpg). This number
is calculated based on the number of
L/100 km (mpg) recorded since the

Cadillac Escalade Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13690472) - 2021 - CRC - 8/10/21
238 DRIVING AND OPERATING
Warning (Continued)
After driving through a large puddle
of water or a car/vehicle wash,
lightly apply the brake pedal until
the brakes work normally.
Flowing or rushing water creates
strong forces. Driving through
flowing water could cause the
vehicle to be carried away. If this
happens, you and other vehicle
occupants could drown. Do not
ignore police warnings and be very
cautious about trying to drive
through flowing water.
Hydroplaning
Hydroplaning is dangerous. Water can
build up under the vehicle's tires so
they actually ride on the water. This
can happen if the road is wet enough
and you are going fast enough. When
the vehicle is hydroplaning, it has
little or no contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to
slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet
weather driving tips include:
.Allow extra following distance.
.Pass with caution.
.Keep windshield wiping equipment
in good shape.
.Keep the windshield washer fluid
reservoir filled.
.Have good tires with proper tread
depth. SeeTires0393.
.Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving on
flat or rolling terrain. Tips include:
.Keep the vehicle serviced and in
good shape.
.Check all fluid levels and brakes,
tires, and cooling system.
.Shift to a lower gear when going
down steep or long hills.
{Warning
Using the brakes to slow the vehicle
on a long downhill slope can cause
brake overheating, can reduce brake
performance, and could result in a
loss of braking. Shift the
transmission to a lower gear to let
the engine assist the brakes on a
steep downhill slope.
{Warning
Coasting downhill in N (Neutral) or
with the ignition off is dangerous.
This can cause overheating of the
brakes and loss of steering assist.
Always have the engine running
and the vehicle in gear.
.Drive at speeds that keep the
vehicle in its own lane. Do not
swing wide or cross the center line.
.Be alert on top of hills; something
could be in your lane (e.g., stalled
car, crash).

Cadillac Escalade Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13690472) - 2021 - CRC - 8/10/21
264 DRIVING AND OPERATING
from moving during the transition
from brake pedal release to accelerator
pedal apply. The brakes release when
the accelerator pedal is applied. The
brakes may also release under other
conditions. Do not rely on AVH to
hold the vehicle.
If the accelerator pedal is not applied
within a few minutes, the Electric
Parking Brake will apply. The parking
brake will also apply if the driver door
is opened or the driver seat belt is
unfastened while AVH is holding the
vehicle.
AVH can be turned on by pressing
AUTO HOLD. The indicator light on
the switch will come on. The AVH
light on the instrument panel will
come on while AVH is actively holding
the vehicle. SeeAutomatic Vehicle Hold
(AVH) Light 0125.Ride Control Systems
Traction Control/Electronic
Stability Control
System Operation
The vehicle has a Traction Control
System (TCS) and StabiliTrak/
Electronic Stability Control (ESC).
These systems help limit wheel spin
and assist the driver in maintaining
control, especially on slippery road
conditions.
TCS activates if it senses any of the
drive wheels are spinning or beginning
to lose traction. When this happens,
TCS applies the brakes to the spinning
wheels and reduces engine power to
limit wheel spin.
StabiliTrak/ESC activates when the
vehicle senses a difference between
the intended path and the direction
the vehicle is actually traveling.
StabiliTrak/ESC selectively applies
braking pressure to one or more of the
vehicle wheel brakes to assist the
driver in keeping the vehicle on the
intended path. Trailer Sway Control (TSC) is also on automatically when
the vehicle is started. See
Trailer Sway
Control (TSC) 0347.
If cruise control is being used and
traction control or StabiliTrak/ESC
begins to limit wheel spin, cruise
control will disengage. Cruise control
may be turned back on when road
conditions allow.
Both systems come on automatically
when the vehicle is started and begins
to move. The systems may be heard or
felt while they are operating or while
performing diagnostic checks. This is
normal and does not mean there is a
problem with the vehicle.
It is recommended to leave both
systems on for normal driving
conditions, but it may be necessary to
turn TCS off if the vehicle gets stuck
in sand, mud, ice, or snow. See If the
Vehicle Is Stuck 0240 and “Turning
the Systems Off and On ”later in this
section.
When the transfer case (if equipped)
is in Four-Wheel Drive Low, the TCS
and StabiliTrak/ESC are automatically

Cadillac Escalade Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13690472) - 2021 - CRC - 8/10/21
360 DRIVING AND OPERATING
If the setting is turned off for a given
Trailer Profile, the smartphone will
not receive this security notification
even if the Trailer Profile is active.
Tow/Haul Mode Reminder
This is a reminder to turn on the Tow/
Haul Mode when towing a trailer. See
Tow/Haul Mode0256.
Touch Tow/Haul Mode Reminder in
Settings to view the Tow/Haul Mode
Reminder settings page. These alerts
are based on the Trailer Profile, so the
settings for each Trailer Profile must
be turned on or off. Touch a profile to
view more information or to adjust
the setting for that profile.
This setting will default to OFF for
each Trailer Profile, including the
Guest Trailer Profile.
If Tow/Haul Mode is off and this
setting is on for a Trailer Profile, each
time the ignition is turned on a
reminder will appear to turn on Tow/
Haul Mode when the Trailer Profile is
active. If Tow/Haul Mode is on and this
setting is on for a Trailer Profile, the
reminder will not appear when the
Trailer Profile is active.
Trailer Length Indicator
Touch Trailer Length Indicator to view
the Trailer Length Indicator settings
page. If this setting is ON a guideline
is displayed in the side mirror camera
view to indicate the rear of the
attached trailer. If this setting is OFF
the guideline will not be displayed.
This setting will default to OFF if the
trailer length indicator feature is not
set up. See "Towing Assistance" for
details on the setup.
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. See
Malfunction Indicator
Lamp (Check Engine Light) 0122.
A device connected to the DLC —
such as an aftermarket fleet or
driver-behavior tracking device —
may interfere with vehicle systems.
This could affect vehicle operation
and cause a crash. Such devices
may also access information stored
in the vehicle’s systems.
Caution
Some electrical equipment can
damage the vehicle or cause
components to not work and would (Continued)

Cadillac Escalade Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13690472) - 2021 - CRC - 8/10/21
362 VEHICLE CARE
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 363
California Proposition65 Warning . . . . . . . . . . . . . . . . . . . . . 363
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . 363
Accessories and Modifications . . . . . . . . . . . . . . . . . . . 364
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 364
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 366
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 367
Engine Oil Life System . . . . . . . . . . . 369
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370
Engine Air Filter Life System . . . . 371
Engine Air Cleaner/Filter . . . . . . . . . 371
Cooling System . . . . . . . . . . . . . . . . . . . 372
Engine Overheating . . . . . . . . . . . . . . 375
Engine Fan . . . . . . . . . . . . . . . . . . . . . . . . 376
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 377
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377
Brake Pad Life System . . . . . . . . . . . 378
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 379 Battery - North America . . . . . . . . . 380
Four-Wheel Drive . . . . . . . . . . . . . . . . 380
Front Axle . . . . . . . . . . . . . . . . . . . . . . . . 381
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . 381
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 381
Wiper Blade Replacement . . . . . . . 382
Glass Replacement . . . . . . . . . . . . . . . 383
Windshield Replacement . . . . . . . . 383
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . 383
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . 384
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 384
LED Lighting . . . . . . . . . . . . . . . . . . . . . 384
Electrical System
Electrical System Overload . . . . . . 385
Fuses and Circuit Breakers . . . . . . 385
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
Instrument Panel Fuse Block . . . . 389
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393
All-Season Tires . . . . . . . . . . . . . . . . . . 394
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 394
Low-Profile Tires . . . . . . . . . . . . . . . . . 395 All-Terrain Tires . . . . . . . . . . . . . . . . . . 395
Tire Sidewall Labeling . . . . . . . . . . . 395
Tire Designations . . . . . . . . . . . . . . . . . 397
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . . . . . 397
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 400
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . 401
Tire Pressure Monitor System . . . 402
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 403
Tire Inspection . . . . . . . . . . . . . . . . . . . 406
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 406
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407
Buying New Tires . . . . . . . . . . . . . . . . 408
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 409
Uniform Tire Quality Grading . . . 410
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 411
Wheel Replacement . . . . . . . . . . . . . . 411
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 412
If a Tire Goes Flat . . . . . . . . . . . . . . . . 412
Tire Changing . . . . . . . . . . . . . . . . . . . . . 413
Full-Size Spare Tire . . . . . . . . . . . . . . 424Jump Starting
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . . . 425

Cadillac Escalade Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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VEHICLE CARE 379
3. Select YES on the confirmationmessage. Repeat for pads on the
other axle if they were also
replaced.
How to Disable the Brake Pad
Life System
The brake pad life system can be
turned off. This may be necessary if
aftermarket brake pads without wear
sensors are installed. When the
system is turned off, the front and
rear brake pad life percentages will
not display. However, the built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn can still determine when the
pads should be replaced. See Brakes
0 377.
To turn off the brake pad life system: 1. Using the vehicle information screen controls on the right side of
the instrument cluster, display
Brake Pad Life on the screen. See
Vehicle Information 0134.
2. Select DISABLE.
To turn the brake pad life system back
on, follow the above steps but select
ENABLE in Step 2.
Brake Fluid
The brake master cylinder reservoir is
filled with GM approved DOT 4 brake
fluid as indicated on the reservoir cap.
See Engine Compartment Overview
0 366 for the location of the reservoir.
Checking Brake Fluid
With the vehicle in P (Park) on a level
surface, the brake fluid level should be
between the minimum and maximum
marks on the brake fluid reservoir.
There are only two reasons why the
brake fluid level in the reservoir may
go down:
.Normal brake lining wear. When
new linings are installed, the fluid
level goes back up.
.A fluid leak in the brake hydraulic
system. Have the brake hydraulic
system fixed. With a leak, the
brakes will not work well. Always clean the brake fluid reservoir
cap and the area around the cap
before removing it.
Do not top off the brake fluid. Adding
fluid does not correct a leak. If fluid is
added when the linings are worn,
there will be too much fluid when
new brake linings are installed. Add or
remove fluid, as necessary, only when
work is done on the brake hydraulic
system.
{Warning
If too much brake fluid is added, it
can spill on the engine and burn,
if the engine is hot enough. You or
others could be burned, and the
vehicle could be damaged. Add
brake fluid only when work is done
on the brake hydraulic system.
When the brake fluid falls to a low
level, the brake warning light comes
on. See Brake System Warning Light
0 124.
Brake fluid absorbs water over time
which degrades the effectiveness of
the brake fluid. Replace brake fluid at