2003 CADILLAC ESCALADE EXT fuel

Normal Maintenance Replacement Parts
Replacement part numbers listed in this section are based on the latest information available at the time of printing,
and are subject to change. If a part listed in this manual is not the same as the part used in your vehicle when it
was built, or if you have any questions, please contact your GM dealer.
These speci®cations are for information only. If you have any questions, see the service manual.
Part Number
Oil FilterPF44*
Engine Air Cleaner/Filter A1518C*
PCV ValveCV2001-C*
Spark Plugs 41-974* / PZTR5A15²
Fuel FilterGF626*
Wiper Blades (Front) 15153642**
Wiper Blade Length (Front) 22.0 inches (56.0 cm)
*ACDelco
žPart No.
**GM Part No.
²NGK part number
5-111

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Your Vehicle and the Environment....................6-2
Maintenance Requirements..............................6-2
How This Section is Organized.........................6-3
Part A: Scheduled Maintenance Services...........6-4
Using Your Maintenance Schedule....................6-4
Scheduled Maintenance...................................6-5
Part B: Owner Checks and Services................6-11
At Each Fuel Fill..........................................6-11
At Least Once a Month.................................6-11
At Least Twice a Year...................................6-12At Least Once a Year...................................6-12
Part C: Periodic Maintenance Inspections.........6-15
Steering and Suspension Inspection................6-15
Exhaust System Inspection............................6-15
Fuel System Inspection..................................6-16
Engine Cooling System Inspection...................6-16
Transfer Case and Front Axle
(All-Wheel Drive) Inspection........................6-16
Brake System Inspection................................6-16
Part D: Recommended Fluids and Lubricants. . . .6-17
Part E: Maintenance Record...........................6-19
Section 6 Maintenance Schedule
6-1

Part A: Scheduled Maintenance
Services
This part contains engine oil and chassis lubrication
scheduled maintenance which explains the engine oil life
system and how it indicates when to change the
engine oil and ®lter. Lubricate chassis components with
each oil change. Also, listed are scheduled maintenance
services which are to be performed at the mileage
intervals speci®ed.
Using Your Maintenance Schedule
We at General Motors want to help you keep your
vehicle in good working condition. But we don't know
exactly how you'll drive it. You may drive very short
distances only a few times a week. Or you may drive
long distances all the time in very hot, dusty weather.
You may use your vehicle in making deliveries.
Or you may drive it to work, to do errands or in many
other ways.
Because of all the different ways people use their
vehicles, maintenance needs vary. You may need more
frequent checks and replacements. So please read
the following and note how you drive. If you have any
questions on how to keep your vehicle in good condition,
see your dealer.This part tells you the maintenance services you should
have done and when to schedule them.
When you go to your dealer for your service needs,
you'll know that GM-trained and supported service
people will perform the work using genuine GM parts.
The proper ¯uids and lubricants to use are listed in
Part D. Make sure whoever services your vehicle uses
these. All parts should be replaced and all necessary
repairs done before you or anyone else drives the
vehicle.
This schedule is for vehicles that:
·carry passengers and cargo within recommended
limits. You will ®nd these limits on your vehicle's
Certi®cation/Tire label. See
Loading Your Vehicle
on page 4-48.
·are driven on reasonable road surfaces within legal
driving limits.
·are driven off-road in the recommended manner.
See
Operating Your All-Wheel-Drive Vehicle Off
Paved Roads on page 4-18.
·use the recommended fuel. SeeGasoline Octane
on page 5-4
.
6-4

Scheduled Maintenance
The services shown in this schedule up to 100,000 miles
(166 000 km) should be repeated after 100,000 miles
(166 000 km) at the same intervals for the life of
this vehicle. The services shown at 150,000 miles
(240 000 km) should be repeated at the same interval
after 150,000 miles (240 000 km) for the life of this
vehicle.
See
Part B: Owner Checks and Services on page 6-11andPart C: Periodic MaintenanceInspections on
page 6-15.
Footnotes
²The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to
the completion of the vehicle 's useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the
maintenance be recorded.
+A good time to check your brakes is during tire
rotation. See Brake System Inspection on page 6-16.
Engine Oil and Chassis Lubrication
Scheduled Maintenance
Change engine oil and ®lter as indicated by the
GM Oil Life System (or every 12 months, whichever
occurs ®rst). Reset the system.
Your vehicle has a computer system that lets you know
when to change the engine oil and ®lter. This is based on
engine revolutions and engine temperature, and not on
mileage. Based on driving conditions, the mileage at
which an oil change will be indicated can vary
considerably. For the oil life system to work properly,
you must reset the system every time the oil is changed.
When the system has calculated that oil life has been
diminished, it will indicate that an oil change is
necessary. A CHANGE ENGINE OIL message will
come on. Change your oil as soon as possible within
the next two times you stop for fuel. It is possible that,
if you are driving under the best conditions, the oil
life system may not indicate that an oil change is
necessary for over a year. However, your engine oil and
®lter must be changed at least once a year and at
this time the system must be reset. Your dealer has
GM-trained service people who will perform this
work using genuine GM parts and reset the system.
It is also important to check your oil regularly and keep
it at the proper level.
6-5

22,500 Miles (37 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
30,000 Miles (50 000 km)
qInspect engine air cleaner ®lter change indicator.
If necessary, replace the ®lter. If vehicle is driven
in dusty/dirty conditions, inspect ®lter change
indicator at every engine oil change. See
Engine Air
Cleaner/Filter on page 5-19for more information.An Emission Control Service. (See footnote ².)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
qReplace fuel ®lter.An Emission Control Service.
(See footnote ².)
37,500 Miles (62 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
45,000 Miles (75 000 km)
qInspect engine air cleaner ®lter change indicator.
If necessary, replace the ®lter. If vehicle is driven
in dusty/dirty conditions, inspect ®lter change
indicator at every engine oil change. See
Engine Air
Cleaner/Filter on page 5-19for more information.An Emission Control Service. (See footnote ².)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
6-7

50,000 Miles (83 000 km)
qChange automatic transmission ¯uid and ®lter if the
vehicle's GVWR is over 8600 lbs or if the vehicle is
mainly driven under one or more of these conditions:
þ In heavy city traffic where the outside
temperature regularly reaches 90ÉF (32ÉC) or
higher.
þ In hilly or mountainous terrain.
þ When doing frequent trailer towing.
þ Uses such as found in taxi, police or delivery
service.
If you do not use your vehicle under any of these
conditions, change the ¯uid and ®lter at 100,000 miles
(166 000 km).
52,500 Miles (87 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
60,000 Miles (100 000 km)
qInspect engine air cleaner ®lter change indicator.
If necessary, replace the ®lter. If vehicle is driven
in dusty/dirty conditions, inspect ®lter change
indicator at every engine oil change. See
Engine Air
Cleaner/Filter on page 5-19for more information.An Emission Control Service. (See footnote ².)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
qReplace fuel ®lter.An Emission Control Service.
(See footnote ².)
qInspect Evaporative Control System. Check all fuel
and vapor lines and hoses for proper hook-up,
routing and condition. Check that the purge valve
works properly, if equipped. Replace as needed.
An Emission Control Service. (See footnote ².)
6-8

67,500 Miles (112 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
75,000 Miles (125 000 km)
qInspect engine air cleaner ®lter change indicator.
If necessary, replace the ®lter. If vehicle is driven
in dusty/dirty conditions, inspect ®lter change
indicator at every engine oil change. See
Engine Air
Cleaner/Filter on page 5-19for more information.An Emission Control Service. (See footnote ².)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
82,500 Miles (137 500 km)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qRotate tires. See
Tire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
90,000 Miles (150 000 km)
qInspect engine air cleaner ®lter change indicator.
If necessary, replace the ®lter. If vehicle is driven
in dusty/dirty conditions, inspect ®lter change
indicator at every engine oil change. See
Engine Air
Cleaner/Filter on page 5-19for more information.An Emission Control Service. (See footnote ².)
qCheck rear/front axle ¯uid level and add ¯uid as
needed. Check constant velocity joints and axle seals
for leaking.
qReplace fuel ®lter.
An Emission Control Service.
(See Footnote ².)
qRotate tires. SeeTire Inspection and Rotation on
page 5-68for proper rotation pattern and additional
information.(See footnote +.)
6-9

Part B: Owner Checks and Services
Listed in this part are owner checks and services
which should be performed at the intervals speci®ed to
help ensure the safety, dependability and emission
control performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any ¯uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant to
perform these underhood checks at each fuel ®ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-14for further
details.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOLž
coolant mixture if necessary. SeeEngine Coolant
on page 5-24for further details.
Windshield Washer Fluid Level Check
Check the windshield washer ¯uid level in the windshield
washer tank and add the proper ¯uid if necessary.
See
Windshield Washer Fluid on page 5-38for further
details.
At Least Once a Month
Tire In¯ation Check
Visually inspect your tires and make sure tires are
in¯ated to the correct pressures. Don't forget to check
your spare tire. See
Tires on page 5-66for further
details.
Cassette Tape Player Service
Clean cassette tape player. Cleaning should be done
every 50 hours of tape play. SeeAudio System(s)
on page 3-66for further details.
6-11