engine GMC YUKON XL 2002 Owners Manual

6-34 What to Add
When you do need brake fluid, use only DOT
- 3 brake
fluid. Refer to ªRecommended Fluids and Lubricantsº
in the Index. Use new brake fluid from a sealed
container only.
Always clean the brake fluid reservoir cap and the area
around the cap before removing it. This will help keep
dirt from entering the reservoir.
CAUTION:With the wrong kind of fluid in your brake
system, your brakes may not work well, or they
may not even work at all. This could cause a
crash. Always use the proper brake fluid. NOTICE:
Using the wrong fluid can badly damage
brake system parts. For example, just a few
drops of mineral
- based oil, such as engine
oil, in your brake system can damage brake
system parts so badly that they'll have to be
replaced. Don't let someone put in the
wrong kind of fluid.

If you spill brake fluid on your vehicle's
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on your vehicle. If you do, wash it off
immediately. See ªAppearance Careº in
the Index.

6-36Replacing Brake System Parts The braking system on a vehicle is complex. Its many
parts have to be of top quality and work well together
if the vehicle is to have really good braking. Your
vehicle was designed and tested with top
- quality GM
brake parts. When you replace parts of your braking
system
-- for example, when your brake linings wear
down and you need new ones put in
-- be sure you get
new approved GM replacement parts. If you don't, your
brakes may no longer work properly. For example, if
someone puts in brake linings that are wrong for your
vehicle, the balance between your front and rear brakes
can change
-- for the worse. The braking performance
you've come to expect can change in many other ways if
someone puts in the wrong replacement brake parts.
Battery Your new vehicle comes with a maintenance free
ACDelco

battery. When it's time for a new battery,
get one that has the replacement number shown on the
original battery's label. We recommend an ACDelco
battery. See ªEngine Compartment Overviewº in the
Index for 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 If you're not going to drive your vehicle for 25 days
or more, remove the black, negative (
- ) cable from
the battery. This will help keep your battery from
running down.
CAUTION: Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you
aren't careful. See ªJump Startingº in the Index
for tips on working around a battery without
getting hurt.
Contact your dealer to learn how to prepare your vehicle
for longer storage periods.
Also, for your audio system, see ªTheft
- Deterrent
Featureº in the Index.
To reprogram your sunroof (if equipped), see ªSunroofº
also in the Index.

6-60Vehicle Identification Number (VIN)
This is the legal identifier for your vehicle. It appears on
a plate in the front corner of the instrument panel, on the
driver's side. You can see it if you look through the
windshield from outside your vehicle. The VIN also
appears on the Vehicle Certification and Service Parts
labels and the certificates of title and registration. Engine Identification The 8th character in your VIN is the engine code. This
code will help you identify your engine, specifications
and replacement parts.
Service Parts Identification Label You'll find this label located in the glove box. It's very
helpful if you ever need to order parts. On this label is:

your VIN,

the model designation,

paint information and

a list of all production options and
special equipment.
Be sure that this label is not removed from the vehicle.

6-65Underhood Fuse Block The underhood fuse/relay block is located near the
battery in the engine compartment. See ªEngine
Compartment Overviewº in the Index for more
information on its location. Lift the cover for access
to the fuse/relay block.
You will see fuses to the top right of the fuse/relay block
once you remove the cover. These are spare fuses and
can be used accordingly.
You can remove fuses with a fuse extractor. The fuse
extractor is located in the fuse/relay block. To remove
fuses if you don't have a fuse extractor, hold the end of
the fuse between your thumb and index finger and pull
straight out.

6-67Name Usage
STUD #1 Accessory Power/Trailer Wiring
Feed/Load Leveling
ABS Anti
- Lock Brakes
IGN A Ignition Switch
AIR A.I.R. System
RAP #1 Retained Accessory Power,
Power Mirrors, Power Door
Locks, Power Seat(s)
IGN B Ignition Switch
RAP #2 Retained Accessory Power/Rear
Power Windows, Sunroof, Radio
STUD #2 Accessory Power/Trailer Wiring
Brake Feed
TRL R TRN Right Turn Signal Trailer Wiring
TRL L TRN Left Turn Signal Trailer Wiring
IGN 1 Ignition, Fuel Controls
INJ
- B Ignition, Fuel Controls (Relay) Name Usage
STARTER Starter (Relay)
PARK LP Parking Lamps
FRT HVAC Climate Control System
STOP LP Exterior Lamps, Stoplamps
ECM 1 VCM/PCM
CHMSL Center High Mounted Stoplamp
VEH STOP Stoplamps, Cruise Control
TRL B/U Backup Lamps Trailer Wiring
INJ
- A Fuel Controls, Ignition
RR HVAC Rear Climate Control System
VEH B/U Vehicle Backup Lamps
ENG 1 Engine Controls, Canister Purge,
Fuel System
ETC Electronic Throttle Control
IGN E A/C Compressor Relay, Rear
Window Defogger, Daytime
Running Lamps, A.I.R. System

6-70Capacities and Specifications Please refer to ªRecommended Fluids and Lubricantsº
in the Index for more information. All capacities
are approximate.
Engine VORTEC 6000 . . . . . . . . . . . . . . . . . . . . . . . .
Type V8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VIN Code U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark Plug Gap 0.060 inches (1.52 mm) . . . . . . . . . .
Wheels and Tires Wheel Nut Torque 140 lb
- ft (190 N´m). . . . . . . . . . .
Tire Pressure See the Certification/Tire label . . . . . .
on the rear edge of the driver's door.
Capacities Cooling System 19.0 quarts (18.0 L). . . . . . . . . . . . .
Engine Oil with Filter 6.0 quarts (5.7 L). . . . . . . . . .
Fuel Tank
Yukon Denali 26.0 U.S. gallons (98.0 L). . . . . . . . .
Yukon XL Denali 31.0 U.S. gallons (117.0 L) . . . . . Air Conditioning
Refrigerant Capacity If you do your own service work, you'll need the proper
service manual. See ªDoing Your Own Service Workº in
the Index for additional information. It is recommended
that service work on your air conditioning system be
performed by a qualified technician.
Air Conditioning Refrigerant R
- 134a
Yukon Denali 2.71 lbs. (1.23 kg). . . . . . . . . . . . . . . .
Yukon XL Denali 3.0 lbs. (1.36 kg). . . . . . . . . . . . .
Use Refrigerant Oil, R
- 134a Systems

6-71Normal 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 specifications are for information only. If you
have any questions, see the service manual.
Oil Filter* PF59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Air Cleaner/Filter* A1518C . . . . . . . . . . . . . . .
Passenger Compartment Air
Filter Kit** 52485513. . . . . . . . . . . . . . . . . . . . . . .
PCV Valve* CV948C. . . . . . . . . . . . . . . . . . . . . . . . . Spark Plugs PTZ16R15 Denso***. . . . . . . . . . . . . . .
PZTR5A15 NGK***
Fuel Filter* GF626. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiper Blades (Front)** 15153642. . . . . . . . . . . . . . .
Wiper Blade Type (Front) ITTA. . . . . . . . . . . . . . . . .
Wiper Blade Length (Front) 22.0 inches (56.0 cm) . . .
Wiper Blades (Rear)** 22154396. . . . . . . . . . . . . . . .
Wiper Blade Type (Rear) ITTA. . . . . . . . . . . . . . . . . .
Wiper Blade Length (Rear) 18.0 inches (45.0 cm) . . .
* ACDelco

Part No.
**GM Part No.
***Spark Plug Gap is 0.060 inches

Scheduled Maintenance
7-6 Engine Oil and Chassis Lubrication
Scheduled Maintenance Change engine oil and filter as indicated by the
GM Oil Life System  (or every 12 months,
whichever occurs first). Reset the system.
Your vehicle has a computer system that lets you know
when to change the engine oil and filter. 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 filter must
be changed at least once a year and at this time the
system must be reset. 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. See ªOil Life Systemº in the Index
for information on resetting the system.
An Emission Control Service.
Lubricate chassis components with each engine oil and
filter change. Lubricate the front suspension, ball joints,
steering linkage, transmission shift linkage and parking
brake cable guides. Ball joints should not be lubricated
unless their temperature is 10
F (
- 12
C) or higher,
or they could be damaged.

Scheduled Maintenance
7-1260,000 Miles (100 000 km)
Replace passenger compartment air filter. If you drive regularly under dusty
conditions, the filter may require replacement more often.

Check rear/front axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking.

Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.)

Inspect engine accessory drive belt.
An Emission Control Service.

Replace fuel filter.
An Emission Control Service. (See footnote
.)
 Inspect 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
.)
67,500 Miles (112 500 km)  Check rear/front axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking.
 Rotate tires. See ªTire Inspection and Rotationº in the Index for proper
rotation pattern and additional information. (See footnote +.) ACTUAL
SERVICED BY:
MILEAGEDATE
ACTUAL
SERVICED BY:
MILEAGEDATE

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