ECU CADILLAC ESCALADE ESV 2009 Service Manual

This light comes on briey while starting the engine.
If it does not, have the vehicle serviced by your
dealer/retailer. If the system is working normally
the indicator light then goes off.
If the light comes on and stays on, it means that oil is
not owing through the engine properly. The vehicle
could be low on oil and it might have some other system
problem.
Security Light For information regarding
this light and the vehicle’s
security system, see
Content Theft-Deterrent
on page 2-21 .Fog Lamp Light The fog lamp light comes
on when the fog lamps are
in use.
The light goes out when the fog lamps are turned off.
See Fog Lamps on page 3-22 for more information.
Lights On Reminder This light comes on
whenever the parking
lamps are on.
See Exterior Lamps on page 3-16 for more information.
3-45

Headphone Jack: Wired headphones can be
plugged into the headphone jack with one-eighth inch
stereo plugs.
AV INPUT: (Audio/Video Input Jack): The audio/video
input jack is located below the video display screen
and allows viewing of auxiliary sources such as portable
DVD players, game stations, or video cameras, on
each screen.
Video Input — The yellow connector is used for
video input.
L Audio — The white connector is used for the left
side audio.
R Audio — The red connector is used for the right
side audio.
Level Lock and Release Latch: The viewing angle
of the video screen can be adjusted by releasing
the latch and gently moving the screen. Then lock
it into a secure position. Vehicle Speakers Audio from the DVD player or an auxiliary device
can be heard through the vehicle speakers or the
wireless/wired headphones, while the radio is tuned to
one of the six frequencies selected on the Sound Around
portion of the system’s remote control. See “Remote
Control” later in this supplement.
Only one audio source can be heard through the
vehicle’s speakers at a time. The audio source being
used is specied by the A/V (audio/video) source
selected on the driver side head restraint video display
screen.
To turn the RSE system audio output to the vehicle’s
speakers, press Sound Around ON, on the system’s
remote control. The audio from the RSE system can be
heard through the wireless/wired headphones and the
vehicle’s speakers at the same time. The volume on the
radio can vary when switching between the radio, CD,
DVD, MP3, or an auxiliary device.
3-100

Tips and Troubleshooting Chart Problem Recommended Action
IR Sensor Inoperative
Check that the
batteries are good in
the remote control.
Check that the
remote Control
IR Sensor is not
blocked.
Aim the remote
control toward the
IR Sensor being
controlled.
Select the correct
screen, 3 or 4.
No picture
Check that the
correct video input
mode is selected.
Check that the video
cable is plugged into
the jack securely. Problem Recommended Action
No Sound
Check that the
correct audio input
mode is selected.
Check that the audio
cable is securely
plugged into the jack.
Cleaning the Video Screens The video display screens are made of a specially
coated glass and can be scratched or damaged by
abrasive products, solvents, or ammonia-based window
cleaners. Clean with a soft, lint-free, cotton cloth that
has been slightly dampened with warm water. Dry the
screens by wiping with a clean dry cotton cloth.
3-112

XM™ Radio Messages XL (Explicit Language Channels): XL on the radio
display, after the channel name, indicates content
with explicit language. These channels, or any others,
can be blocked at a customer’s request by calling
1-800-852-XMXM (9696).
XM Updating: The encryption code in the receiver is
being updated and no action is required.
No XM signal: The vehicle is in a location that is
blocking the XM™ signal. When the vehicle is moved
into an open area, the signal should return.
Loading XM: The audio system is processing audio
and text data received. No action is needed.
Channel Off Air: This channel is not currently in
service.
Channel Unauth: This channel is blocked or cannot be
received with your XM Subscription package.
Channel Unavail: This previously assigned channel is
no longer assigned.
No Artist Info: No artist information is available.
The system is working properly. No Title Info: No song title information is available.
The system is working properly.
No CAT Info: No category information is available.
The system is working properly.
CAT Not Found: There are no channels available for
the selected category. The system is working properly.
No Information: No text or informational messages
are available. The system is working properly.
XM Theftlocked: The XM™ receiver may have
previously been in another vehicle. For security
purposes, XM™ receivers cannot be swapped between
vehicles. If this message is received after having your
vehicle serviced, check with your dealer/retailer.
XM Radio ID: If tuned to channel 0, this message
will alternate with the XM™ Radio eight digit radio ID
label. This label is needed to activate the service.
Unknown: If this message is received when tuned
to channel 0, there may be a receiver fault. Consult
with your dealer/retailer.
Check XM Receiver: If this message does not clear
within a short period of time, the receiver may have
a fault. Consult with your dealer/retailer.
4-70

Loading Your Vehicle for Off-Road
Driving
{ CAUTION: Cargo on the load oor piled higher than the
seatbacks can be thrown forward during a
sudden stop. You or your passengers could
be injured. Keep cargo below the top of the
seatbacks.
Unsecured cargo on the load oor can be
tossed about when driving over rough terrain.
You or your passengers can be struck by
ying objects. Secure the cargo properly.
Heavy loads on the roof raise the vehicle’s
center of gravity, making it more likely to roll
over. You can be seriously or fatally injured if
the vehicle rolls over. Put heavy loads inside
the cargo area, not on the roof. Keep cargo in
the cargo area as far forward and low as
possible. There are some important things to remember about
how to load your vehicle.
The heaviest things should be on the oor, forward
of the rear axle. Put heavier items as far forward
as you can.
Be sure the load is properly secured, so things are
not tossed around.
You will nd other important information under Loading
the Vehicle on page 5-33 and Tires on page 6-56 .
5-15

Using heavier suspension components to get
added durability might not change your weight
ratings. Ask your dealer to help you load your
vehicle the right way.
If you put things inside your vehicle — like
suitcases, tools, packages, or anything
else — they will go as fast as the vehicle
goes. If you have to stop or turn quickly, or
if there is a crash, they will keep going.
{ CAUTION: Things you put inside your vehicle can strike
and injure people in a sudden stop or turn, or
in a crash.
Put things in the cargo area of your
vehicle. Try to spread the weight evenly.
Never stack heavier things, like
suitcases, inside the vehicle so that some
of them are above the tops of the seats.
Do not leave an unsecured child restraint
in your vehicle.
When you carry something inside the
vehicle, secure it whenever you can.
Do not leave a seat folded down unless
you need to. There is also important loading information for
off-road driving in this manual. See “Loading Your
Vehicle for Off-Road Driving” under Off-Road
Driving on page 5-13 .
Add-On Equipment
When you carry removable items, you may
need to put a limit on how many people you
can carry inside your vehicle. Be sure to weigh
your vehicle before you buy and install the
new equipment.
Notice :
Overloading your vehicle may cause
damage. Repairs would not be covered by your
warranty. Do not overload your vehicle.
Remember not to exceed the Gross Axle Weight
Rating (GAWR) of the front or rear axle.
Automatic Level Control
The automatic level control rear suspension
comes as a part of the Road Sensing Suspension.
See Road Sensing Suspension on page 5-9 .
This type of level control is fully automatic and will
provide a better leveled riding position as well as
better handling under a variety of passenger and
loading conditions. An air compressor connected
to the rear shocks will raise or lower the rear of
the vehicle to maintain proper vehicle height.
5-39

Two-wheel-drive vehicles should not be towed with
the rear wheels on the ground. Two-wheel-drive
transmissions have no provisions for internal lubrication
while being towed.
Dolly Towing (Rear Wheels Off the Ground)
Use the following procedure to dinghy tow a
two-wheel-drive vehicle from the rear:
1. Attach the dolly to the tow vehicle following the
dolly manufacturer’s instructions.
2. Drive the rear wheels onto the dolly.
3. Firmly set the parking brake. See Parking Brake on
page 2-34 . 4. Put the transmission in P (Park).
5. Secure the vehicle to the dolly following the
manufacturer’s instructions.
6. Use an adequate clamping device designed for
towing to ensure that the front wheels are locked
into the straight position.
7. Turn the ignition to LOCK/OFF.
Level Control
Automatic Level Control The automatic level control rear suspension is available
on light-duty vehicles and comes as a part of the
Autoride ®
suspension, if equipped.
This type of level control is fully automatic and will provide
a better leveled riding position as well as better handling
under a variety of passenger and loading conditions. An
air compressor connected to the rear shocks will raise or
lower the rear of the vehicle to maintain proper vehicle
height. The system is activated when the ignition key is
turned to ON/RUN and will automatically adjust vehicle
height thereafter. The system may exhaust (lower vehicle
height) for up to ten minutes after the ignition key has
been turned off. You may hear the air compressor
operating when the height is being adjusted.
If a weight-distributing hitch is being used, it is
recommended to allow the shocks to inate, thereby
leveling the vehicle prior to adjusting the hitch.
5-43

Towing a trailer requires a certain amount of experience.
Get to know the rig before setting out for the open road.
Get acquainted with the feel of handling and braking with
the added weight of the trailer. And always keep in mind
that the vehicle you are driving is now longer and not as
responsive as the vehicle is by itself.
Before starting, check all trailer hitch parts and
attachments, safety chains, electrical connectors, lamps,
tires and mirror adjustments. If the trailer has electric
brakes, start the vehicle and trailer moving and then
apply the trailer brake controller by hand to be sure the
brakes are working. This checks the electrical connection
at the same time.
During the trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer brakes
are still working.
Following Distance Stay at least twice as far behind the vehicle ahead as you
would when driving the vehicle without a trailer. This can
help to avoid situations that require heavy braking and
sudden turns.
Passing More passing distance is needed when towing a trailer.
Because the rig is longer, it is necessary to go much
farther beyond the passed vehicle before returning to
the lane. Backing Up Hold the bottom of the steering wheel with one hand.
Then, to move the trailer to the left, move that hand
to the left. To move the trailer to the right, move your
hand to the right. Always back up slowly and, if possible,
have someone guide you.
Making Turns Notice: Making very sharp turns while trailering
could cause the trailer to come in contact with the
vehicle. The vehicle could be damaged. Avoid
making very sharp turns while trailering.
When turning with a trailer, make wider turns than
normal. Do this so the trailer will not strike soft shoulders,
curbs, road signs, trees or other objects. Avoid jerky
or sudden maneuvers. Signal well in advance.
Turn Signals When Towing a Trailer The arrows on the instrument panel ash whenever
signaling a turn or lane change. Properly hooked up, the
trailer lamps also ash, telling other drivers the vehicle
is turning, changing lanes or stopping.
When towing a trailer, the arrows on the instrument panel
ash for turns even if the bulbs on the trailer are burned
out. For this reason you may think other drivers are
seeing the signal when they are not. It is important to
check occasionally to be sure the trailer bulbs are still
working.
5-53

4. With the coolant surge tank pressure cap off, start
the engine and let it run until you can feel the upper
radiator hose getting hot. Watch out for the engine
cooling fan.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower, add
more of the proper mixture to the coolant surge tank
until the level reaches the FULL COLD mark. 5. Replace the pressure cap. Be sure the pressure
cap is hand-tight and fully seated.
6. Verify coolant level after engine is shut off and the
coolant is cold. If necessary, repeat coolant ll
procedure Steps 1 through 6.
Notice: If the pressure cap is not tightly installed,
coolant loss and possible engine damage may occur.
Be sure the cap is properly and tightly secured.
Engine Overheating The vehicle has several indicators to warn of engine
overheating.
There is a coolant temperature gage on your vehicle’s
instrument panel. See Engine Coolant Temperature
Gage on page 3-41 .
In addition, ENGINE OVERHEATED STOP ENGINE,
ENGINE OVERHEATED IDLE ENGINE, and a ENGINE
POWER IS REDUCED message comes on in the
Driver Information Center (DIC) on the instrument panel.
See DIC Warnings and Messages on page 3-56 .
6-30

Reset the Tire Pressure Monitor System. See Tire
Pressure Monitor Operation on page 6-65 .
Make certain that all wheel nuts are properly
tightened. See “Wheel Nut Torque” under
Capacities and Specifications on page 6-113 .
{ CAUTION:Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the
vehicle. In an emergency, you can use a
cloth or a paper towel to do this; but be
sure to use a scraper or wire brush later,
if needed, to get all the rust or dirt off.
See Changing a Flat Tire on page 6-78 .
Make sure the spare tire is stored securely.
Push, pull, and then try to rotate or turn the tire.
If it moves, tighten the cable. See Storing a Flat
or Spare Tire and Tools on page 6-92 . When It Is Time for New Tires Various factors, such as maintenance, temperatures,
driving speeds, vehicle loading, and road conditions,
inuence when you need new tires.
One way to tell when it
is time for new tires is to
check the treadwear
indicators, which appear
when your tires have only
1/16 inch (1.6 mm) or less
of tread remaining. Some
commercial truck tires
may not have treadwear
indicators.
6-70