2003 CADILLAC ESCALADE EXT oil additives

Service............................................................5-3
Doing Your Own Service Work.........................5-3
Adding Equipment to the Outside of
Your Vehicle..............................................5-4
Fuel................................................................5-4
Gasoline Octane............................................5-4
Gasoline Speci®cations....................................5-5
California Fuel...............................................5-5
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-6
Filling Your Tank............................................5-7
Filling a Portable Fuel Container.......................5-9
Checking Things Under the Hood....................5-10
Hood Release..............................................5-10
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-14
Engine Air Cleaner/Filter................................5-19
Automatic Transmission Fluid.........................5-21
Engine Coolant.............................................5-24
Coolant Surge Tank Pressure Cap..................5-27
Engine Overheating.......................................5-27
Cooling System............................................5-30
Engine Fan Noise.........................................5-36Power Steering Fluid.....................................5-37
Windshield Washer Fluid................................5-38
Brakes........................................................5-39
Battery........................................................5-43
Jump Starting...............................................5-44
All-Wheel Drive..............................................5-50
Rear Axle.......................................................5-51
Front Axle......................................................5-52
Headlamp Aiming...........................................5-53
Headlamp Horizontal Aiming...........................5-54
Headlamp Vertical Aiming..............................5-55
Bulb Replacement..........................................5-57
High Intensity Discharge (HID) Lighting............5-57
Halogen Bulbs..............................................5-57
Headlamps..................................................5-58
Front Turn Signal, Sidemarker and
Daytime Running Lamps.............................5-62
Center High-Mounted Stoplamp (CHMSL).........5-63
Taillamps.....................................................5-63
Replacement Bulbs.......................................5-64
Windshield Wiper Blade Replacement..............5-65
Section 5 Service and Appearance Care
5-1

Additives
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system to work properly.
You should not have to add anything to your fuel.
Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines may be available in
your area to contribute to clean air. General Motors
recommends that you use these gasolines, particularly if
they comply with the speci®cations described earlier.
Notice:Your vehicle was not designed for fuel
that contains methanol. Don't use fuel containing
methanol. It can corrode metal parts in your
fuel system and also damage the plastic and rubber
parts. That damage wouldn't be covered under
your warranty.Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains MMT. General Motors
does not recommend the use of such gasolines.
Fuels containing MMT can reduce the life of spark plugs
and the performance of the emission control system
may be affected. The malfunction indicator lamp
may turn on. If this occurs, return to your authorized
GM dealer for service.Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard
to ®nd. Never use leaded gasoline or any other fuel
not recommended in the previous text on fuel.
Costly repairs caused by use of improper fuel
wouldn't be covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you'll be driving.
5-6

As in the chart shown previously, SAE 5W-30 is the
only viscosity grade recommended for your vehicle.
You should look for and use only oils which have the
API Starburst symbol and which are also identi®ed
as SAE 5W-30. If you cannot ®nd such SAE 5W-30 oils,
you can use an SAE 10W-30 oil which has the API
Starburst symbol, if it's going to be 0ÉF (-18ÉC)
or above. Do not use other viscosity grade oils, such as
SAE 10W-40 or SAE 20W-50 under any conditions.
Notice:Use only engine oil with the American
Petroleum Institute Certi®ed For Gasoline Engines
starburst symbol. Failure to use the recommended
oil can result in engine damage not covered by
your warranty.
GM Goodwrench
žoil meets all the requirements for
your vehicle.
If you are in an area of extreme cold, where the
temperature falls below-20ÉF (-29ÉC), it is
recommended that you use either an SAE 5W-30
synthetic oil or an SAE 0W-30 oil. Both will provide
easier cold starting and better protection for your engine
at extremely low temperatures.
Engine Oil Additives
Don't add anything to your oil. The recommended oils
with the starburst symbol are all you will need for
good performance and engine protection.
When to Change Engine Oil
(GM Oil Life 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.
If the system is ever reset accidentally, you must
change your oil at 3,000 miles (5 000 km) since your
last oil change. Remember to reset the oil life system
whenever the oil is changed.
5-17

What to Use
Use a mixture of one-halfclean, drinkable waterand
one-half DEX-COOLžcoolant which won't damage
aluminum parts. If you use this coolant mixture,
you don't need to add anything else.
{CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid such as alcohol, can boil before the
proper coolant mixture will. Your vehicle's
coolant warning system is set for the proper
coolant mixture. With plain water or the wrong
mixture, your engine could get too hot but you
wouldn't get the overheat warning. Your engine
could catch ®re and you or others could be
burned. Use a 50/50 mixture of clean, drinkable
water and DEX-COOL
žcoolant.
Notice:If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost wouldn't be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
Notice:If you use the proper coolant, you don't
have to add extra inhibitors or additives which claim
to improve the system. These can be harmful.
5-25

E
Easy Exit Seat...............................................2-73
Electrical System...........................................5-101
Add-On Equipment.....................................5-101
Fuses and Circuit Breakers.........................5-101
Power Windows and Other Power Options.......5-101
Windshield Wiper Fuses.............................5-101
Electrochromic Mirror Operation........................2-42
Emissions Inspection and
Maintenance Programs.................................3-44
ENGINE COOLANT HOT.................................3-59
Engine Coolant Level Check.............................6-11
Engine Oil Additives........................................5-17
Engine Oil and Chassis Lubrication Scheduled
Maintenance................................................. 6-5
Engine Oil Level Check...................................6-11
ENGINE OVERHEATED..................................3-60
Engine..........................................................5-19
Air Cleaner/Filter.........................................5-19
Battery.......................................................5-43
Check and Service Engine Soon Light............3-42
Compartment Overview................................5-12
Coolant Heater............................................2-31
Coolant Temperature Gage...........................3-40
Coolant......................................................5-24
Cooling System Inspection............................6-16
Exhaust.....................................................2-39Engine (cont.)
Fan Noise..................................................5-36
Oil .............................................................5-14
Overheating................................................5-27
Starting......................................................2-29
Entertainment System....................................3-101
Cleaning the Video Screen..........................3-101
DVD Distortion............................................3-99
Entry Lighting.................................................3-18
Environmental Concerns..................................4-20
Erasing HomeLink
žButtons..............................2-51
Exit Lighting...................................................3-18
Extender, Safety Belt.......................................1-27
Exterior Lamps...............................................3-14
F
Filter.............................................................5-19
Engine Air Cleaner......................................5-19
Finding a PTY Station (RDS and XMŸ).............3-71
Finding a Station............................................3-69
Finish Care....................................................5-96
Finish Damage...............................................5-98
Fixed Mast Antenna.......................................3-101
Flash-to-Pass................................................... 3-9
Flat Tire, Changing.........................................5-76
Flat Tire........................................................5-75
6

Fluid.............................................................5-21
Automatic Transmission................................5-21
Power Steering...........................................5-37
Windshield Washer......................................5-38
FM Stereo.....................................................3-99
Fog Lamps....................................................3-17
Following Distance..........................................4-58
Footnotes........................................................ 6-5
Front Axle......................................................5-52
Fuel Information Button....................................3-50
FUEL LEVEL LOW.........................................3-61
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-46
Gasoline Octane........................................... 5-4
Gasoline Speci®cations.................................. 5-5
Low Warning Light.......................................3-46
System Inspection.......................................6-16
Fuses..........................................................5-101
Fuses and Circuit Breakers.........................5-101
Windshield Wiper.......................................5-101G
Gage............................................................3-40
Engine Coolant Temperature.........................3-40
Fuel..........................................................3-46
Oil Pressure...............................................3-44
Speedometer..............................................3-33
Tachometer.................................................3-33
Transmission Temperature.............................3-40
Voltmeter Gage...........................................3-37
Garage Door Opener.......................................2-48
Gasoline......................................................... 5-4
Octane........................................................ 5-4
Speci®cations............................................... 5-5
Gate Operator and Canadian Programming........2-51
Getting Familiar with Off-Road Driving................4-20
Glove Box.....................................................2-52
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-5
Headlamp High/Low-Beam Changer.................... 3-8
7