Page 369 of 494

Black plate (27,1)Cadillac Escalade EXT Owner Manual - 2012
Vehicle Care 10-27
Notice
.Using the wrong fluid
can badly damage brake
hydraulic system parts. For
example, just a few drops of
mineral-based oil, such as
engine oil, in the brake
hydraulic system can
damage brake hydraulic
system parts so badly that
they will have to be replaced.
Do not let someone put in
the wrong kind of fluid.
.If brake fluid is spilled on the
vehicle's painted surfaces,
the paint finish can be
damaged. Be careful not to
spill brake fluid on the
vehicle. If you do, wash it off
immediately.
Battery
Refer to the replacement number
shown on the original battery label
when a new battery is needed. See
Engine Compartment Overview on
page 10‑6for battery location.
{WARNING
Battery posts, terminals, and
related accessories contain lead
and lead compounds, chemicals
known to the State of California to
cause cancer and reproductive
harm. Wash hands after handling.
Vehicle Storage
{WARNING
Batteries have acid that can burn
you and gas that can explode.
You can be badly hurt if you are
not careful. See Jump Starting on
page 10‑76 for tips on working
around a battery without
getting hurt.
Infrequent Usage: Remove the
black, negative (−) cable from the
battery to keep the battery from
running down. Extended Storage: Remove the
black, negative (−) cable from the
battery or use a battery trickle
charger.
All-Wheel Drive
Transfer Case
If the vehicle is equipped with
All-Wheel Drive, be sure to perform
the lubricant checks described in
this section.
When to Check Lubricant
Refer to
Maintenance Schedule on
page 11‑3 to determine how often to
check the lubricant.
How to Check Lubricant
To get an accurate reading, the
vehicle should be on a level
surface.
Page 370 of 494

Black plate (28,1)Cadillac Escalade EXT Owner Manual - 2012
10-28 Vehicle Care
A. Drain Plug
B. Fill Plug
If the level is below the bottom of
the fill plug hole, located on the
transfer case, some lubricant will
need to be added. Add enough
lubricant to raise the level to the
bottom of the fill plug hole. Use care
not to overtighten the plug.
What to Use
Refer toRecommended Fluids and
Lubricants on page 11‑12 to
determine what kind of lubricant
to use.
Front Axle
When to Check and Change
Lubricant
It is not necessary to regularly
check front axle fluid unless there is
a leak suspected or an unusual
noise is heard. A fluid loss could
indicate a problem. Have it
inspected and repaired.
How to Check Lubricant
To get an accurate reading, the
vehicle should be on a level
surface.
A. Fill Plug
B. Drain Plug
.When the differential is cold, add
enough lubricant to raise the
level from 0 mm (0 in) to 3.2 mm
(1/8 in) below the fill plug hole.
.When the differential is at
operating temperature (warm),
add enough lubricant to raise the
level to the bottom of the fill
plug hole.
What to Use
Refer to Recommended Fluids and
Lubricants on page 11‑12 to
determine what kind of lubricant
to use.
Rear Axle
When to Check Lubricant
It is not necessary to regularly
check rear axle fluid unless there is
a leak suspected or an unusual
noise is heard. A fluid loss could
indicate a problem. Have it
inspected and repaired.
Page 371 of 494

Black plate (29,1)Cadillac Escalade EXT Owner Manual - 2012
Vehicle Care 10-29
All axle assemblies are filled by
volume of fluid during production.
They are not filled to reach a certain
level. When checking the fluid level
on any axle, variations in the
readings can be caused by factory
fill differences between the minimum
and the maximum fluid volume.
Also, if a vehicle has just been
driven before checking the fluid
level, it may appear lower than
normal because fluid has traveled
out along the axle tubes and has
not drained back to the sump area.
Therefore, a reading taken
five minutes after the vehicle has
been driven will appear to have a
lower fluid level than a vehicle that
has been stationary for an hour or
two. Remember that the rear axle
assembly must be supported to get
a true reading.How to Check Lubricant
To get an accurate reading, the
vehicle should be on a level
surface.
The proper level is from 1.0 mm to
19 mm (0.04 inch to 0.75 inches)
below the bottom of the filler plug
hole, located on the rear axle. Add
only enough fluid to reach the
proper level.
What to Use
Refer to the Maintenance Schedule
to determine what kind of lubricant
to use. SeeRecommended Fluids
and Lubricants on page 11‑12.
Starter Switch Check
{WARNING
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular brake.
See Parking Brake on
page 9‑37.
Page 372 of 494

Black plate (30,1)Cadillac Escalade EXT Owner Manual - 2012
10-30 Vehicle Care
Do not use the accelerator
pedal, and be ready to turn off
the engine immediately if it
starts.
3. Try to start the engine in each gear. The vehicle should start
only in P (Park) or N (Neutral).
If the vehicle starts in any other
position, contact your dealer for
service.
Automatic Transmission
Shift Lock Control
Function Check
{WARNING
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured. 1. Before starting this check, be
sure there is enough room
around the vehicle. It should be
parked on a level surface.
2. Firmly apply the parking brake. See Parking Brake on
page 9‑37.
Be ready to apply the regular
brake immediately if the vehicle
begins to move.
3. With the engine off, turn the ignition on, but do not start the
engine. Without applying the
regular brake, try to move the
shift lever out of P (Park) with
normal effort. If the shift lever
moves out of P (Park), contact
your dealer for service.
Ignition Transmission
Lock Check
While parked, and with the parking
brake set, try to turn the ignition to
LOCK/OFF in each shift lever
position.
.The ignition should turn to
LOCK/OFF only when the shift
lever is in P (Park).
.The ignition key should come
out only in LOCK/OFF.
Contact your dealer if service is
required.
Park Brake and P (Park)
Mechanism Check
{WARNING
When you are doing this check,
the vehicle could begin to move.
You or others could be injured
and property could be damaged.
Make sure there is room in front
of the vehicle in case it begins to
roll. Be ready to apply the regular
brake at once should the vehicle
begin to move.
Page 373 of 494

Black plate (31,1)Cadillac Escalade EXT Owner Manual - 2012
Vehicle Care 10-31
Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot on the regular brake, set
the parking brake.
.To check the parking brake's
holding ability: With the engine
running and the transmission in
N (Neutral), slowly remove foot
pressure from the regular brake
pedal. Do this until the vehicle is
held by the parking brake only.
.To check the P (Park)
mechanism's holding ability:
With the engine running, shift to
P (Park). Then release the
parking brake followed by the
regular brake.
Contact your dealer if service is
required.
Wiper Blade Replacement
Windshield wiper blades should be
inspected for wear or cracking. See
Maintenance Schedule on
page 11‑3.
Replacement blades come in
different types and are removed in
different ways.
To replace the wiper blade
assembly:
1. Pull the windshield wiper arm connector away from the
windshield.
2. Squeeze the grooved areas on
each side of the blade, and
rotate the blade assembly away
from the arm connector.
3. Install the new blade onto thearm connector and make sure
the grooved areas are fully set in
the locked position.
For the proper type and size, see
Maintenance Replacement Parts on
page 11‑14.
Glass Replacement
If the windshield or front side glass
must be replaced, see your dealer
to determine the correct
replacement glass.
Page 374 of 494

Black plate (32,1)Cadillac Escalade EXT Owner Manual - 2012
10-32 Vehicle Care
Headlamp Aiming
The vehicle has a visual optical
headlamp aiming system. The aim
of the headlamps have been preset
at the factory and should need no
further adjustment.
However, if the vehicle is damaged
in a crash, the aim of the headlamps
may be affected and adjustment
may be necessary.
If oncoming vehicles flash their high
beams at you, this may mean the
vertical aim of the headlamps needs
to be adjusted.
It is recommended that the vehicle
is taken to your dealer for service if
the headlamps need to be adjusted.
It is possible however, to re-aim the
headlamps as described.
The vehicle should:
.Be placed so the headlamps are
7.6 m (25 ft.) from a light colored
wall or other flat surface.
.Have all four tires on a level
surface which is level all the way
to the wall or other flat surface.
.Be placed so it is perpendicular
to the wall or other flat surface.
.Not have any snow, ice, or mud
on it.
.Be fully assembled and all other
work stopped while headlamp
aiming is being performed.
.Be normally loaded with a full
tank of fuel and one person or
75 kg (160 lbs) sitting on the
driver seat.
.Have the tires properly inflated.
.Have the spare tire is in its
proper location in the vehicle.
Headlamp aiming is done with the
vehicle's low-beam headlamps. The
high-beam headlamps will be
correctly aimed if the low-beam
headlamps are aimed properly. To adjust the vertical aim:
1. Open the hood. See
Hood on
page 10‑4 for more information.2. Locate the center of the
projector lens of the low‐beam
headlamp.
3. Record the distance from the ground to the center of the
projector lens of the low‐beam
headlamp.
Page 375 of 494

Black plate (33,1)Cadillac Escalade EXT Owner Manual - 2012
Vehicle Care 10-33
4. At a wall, measure from theground upward (A) to the
recorded distance from
Step 3 and mark it.
5. Draw or tape a horizontal line (B) on the wall the width of the
vehicle at the height of the mark
in Step 4.
Notice: Do not cover a headlamp
to improve beam cut-off when
aiming. Covering a headlamp may
cause excessive heat build-up
which may cause damage to the
headlamp. 6. Turn on the low-beam
headlamps and place a piece of
cardboard or equivalent in front
of the headlamp not being
adjusted. This allows only the
beam of light from the headlamp
being adjusted to be seen on the
flat surface.
7. Locate the vertical headlamp
aiming screws, which are under
the hood near each headlamp
assembly. 8. Turn the vertical aiming screw
until the headlamp beam is
aimed to the horizontal tape line.
Turn it clockwise or
counterclockwise to raise or
lower the angle of the beam.
9. Make sure that the light from theheadlamp is positioned at the
bottom edge of the horizontal
tape line. The lamp on the
left (A) shows the correct
headlamp aim. The lamp on the
right (B) shows the incorrect
headlamp aim.
10. Repeat Steps 7 through 9 for the opposite headlamp.
Page 376 of 494

Black plate (34,1)Cadillac Escalade EXT Owner Manual - 2012
10-34 Vehicle Care
Bulb Replacement
For the proper type of replacement
bulbs, seeReplacement Bulbs on
page 10‑35.
For any bulb‐changing procedure
not listed in this section, contact
your dealer.
High Intensity Discharge
(HID) Lighting
{WARNING
The low beam high intensity
discharge lighting system
operates at a very high voltage.
If you try to service any of the
system components, you could be
seriously injured. Have your
dealer or a qualified technician
service them.
The vehicle may have HID
headlamps. After an HID headlamp
bulb has been replaced, you may notice that the beam is a slightly
different shade than it was originally.
This is normal.
Taillamps, Turn Signal,
Sidemarker, Stoplamps,
and Back-Up Lamps
To replace one of these bulbs:
A. Stoplamp/Turn Signal/Taillamp
B. Back-up Lamp
C. Sidemarker Lamp
1. Open the tailgate. See
Tailgate
on page 2‑15 for more
information.
2. Remove the two screws from the taillamp assembly.
3. Pull the taillamp assembly rearward until disengaging the
two outer pins of the taillamp
assembly from the vehicle.
4. Turn the bulb socket counterclockwise to remove it
from the taillamp assembly.
5. Pull the bulb straight out from the socket.