engine coolant GMC YUKON XL 2002 Owner's Manual

6-28Checking Coolant The coolant surge tank
is located in the engine
compartment on the
passenger's side of
the vehicle.
See ªEngine Compartment Overviewº in the Index for
more information on location. CAUTION: Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow out and burn you badly.
Never turn the surge tank pressure cap
-- even a
little
-- when the engine and radiator are hot.
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the FILL
COLD mark.
If the LOW COOLANT
message comes on and stays
on, it means you're low on
engine coolant.
See ªLow Coolantº in the Index.

6-29Adding Coolant
If you need more coolant, add the proper DEX
- COOL

coolant mixture at the surge tank , but only when the
engine is cool.
CAUTION:You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
When replacing the pressure cap, make sure it
is hand
- tight. Coolant Surge Tank Pressure Cap The coolant surge tank pressure cap must be fully
installed on the coolant surge tank. See ªEngine
Compartment Overviewº in the Index for more
information on location.
NOTICE: Your coolant surge tank pressure cap is a 15 psi
(105 kPa) pressure
- type cap and must be tightly
installed to prevent coolant loss and possible
engine damage from overheating.

6-31Windshield Washer Fluid What to Use When you need windshield washer fluid, be sure to read
the manufacturer's instructions before use. If you will be
operating your vehicle in an area where the temperature
may fall below freezing, use a fluid that has sufficient
protection against freezing. See ªEngine Compartment
Overviewº in the Index for reservoir location.
Adding Washer Fluid Your vehicle has a low washer fluid message that comes
on when the washer fluid is low. The message is
displayed for 15 seconds at the start of each ignition
cycle. When the LOW WASHER FLUID message is
displayed, you will need to add washer fluid to the
windshield washer fluid reservoir.
The windshield washer fluid
reservoir is located in the
engine compartment toward
the front of the vehicle on
the driver's side. Open the cap with the washer symbol on it. Add washer
fluid until the tank is full.
NOTICE:
When using concentrated washer fluid,
follow the manufacturer's instructions for
adding water.

Don't mix water with ready
- to
- use washer
fluid. Water can cause the solution to freeze
and damage your washer fluid tank and
other parts of the washer system. Also,
water doesn't clean as well as washer fluid.

Fill your washer fluid tank only
three
- quarters full when it's very cold. This
allows for expansion if freezing occurs,
which could damage the tank if it is
completely full.

Don't use engine coolant (antifreeze) in
your windshield washer. It can damage
your washer system and paint.

Scheduled Maintenance
7-15150,000 Miles (240 000 km)
Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See ªEngine Coolantº in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test
the cooling system and pressure cap.
An Emission Control Service. ACTUAL
SERVICED BY:
MILEAGEDATE

7-16Part B: Owner Checks and Services Listed in this part are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids 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 fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. See ªEngine Oilº in the Index for
further details. Engine Coolant Level Check
Check the engine coolant level and add DEX
- COOL

coolant mixture if necessary. See ªEngine Coolantº in
the Index for further details.
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the
windshield washer tank and add the proper fluid if
necessary. See ªWindshield Washer Fluidº in the
Index for further details.
At Least Once a Month Tire Inflation Check
Make sure tires are inflated to the correct pressures.
Don't forget to check your spare tire. See ªTiresº in the
Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See ªAudio Systemsº in the
Index for further details.

7-23Part D: Recommended Fluids
and Lubricants Fluids and lubricants identified below by name,
part number or specification may be obtained from
your dealer.
USAGE FLUID/LUBRICANT
Engine Oil Engine oil with the American
Petroleum Institute Certified
for Gasoline Engines starburst
symbol of the proper viscosity.
To determine the preferred
viscosity for your vehicle's engine,
see ªEngine Oilº in the Index.
Engine Coolant 50/50 mixture of clean,
drinkable water and use only
GM Goodwrench

DEX
- COOL

or Havoline

DEX
- COOL

Coolant. See ªEngine Coolantº
in the Index. USAGE FLUID/LUBRICANT
Hydraulic
Brake System Delco Supreme 11

Brake Fluid
(GM Part No. 12377967 or
equivalent DOT
- 3 brake fluid).
Windshield
Washer Solvent GM Optikleen

Washer Solvent
(GM Part No. 1051515)
or equivalent.
Power
Steering System GM Power Steering Fluid
(GM Part No. 1052884
- 1 pint,
1050017
- 1 quart, or equivalent).
Automatic
Transmission DEXRON

- III Automatic
Transmission Fluid.
Key
Lock Cylinders Multi
- Purpose Lubricant,
Superlube

(GM Part
No. 12346241 or equivalent).
Chassis
Lubrication Chassis Lubricant
(GM Part No. 12377985 or
equivalent) or lubricant meeting
requirements of NLGI # 2,
Category LB or GC
- LB.