2003 GMC YUKON DENALI Owners Manual

Rear Axle
When to Check Lubricant
Refer to the Maintenance Schedule to determine how
often to check the lubricant. See Part
A: Scheduled
Maintenance Services
on page 6-4.
How to Check Lubricant
To get an accurate reading, the vehicle should be on a
level surface.
The proper level is from
5/8 inch to 1 5/8 inch (15 mm to
40 mm) below the bottom of the filler plug hole. Add
only enough fluid to reach the proper level.
What to Use
Refer to the Maintenance Schedule to determine what
kind
of lubricant to use. See Part D: Recommended
Fluids and Lubricants
on page 6-15.
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Bulb Replacement
See Replacement Bulbs on page 5-53 for the proper
type
of bulbs to use.
For any bulb changing procedure not listed in this
section, contact your dealer.
Halogen Bulbs
Halogen bulbs have pressurized gas inside
and can burst if you drop or scratch the bulb.
You or others could be injured. Be sure to read
and
follow the instructions on the bulb
package.
Headlamps
1. Remove the two pins on the top of the headlamp
assembly.
To remove the pins, turn the outer pin
outward and pull
it straight up. To remove the inner
pin, turn it inward and pull it straight up.
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A. Low-Beam Headlamp
B. High-Beam Headlamp
1. Pull the headlamp assembly out.
2. Unplug the electrical connector.
3. Turn the bulb counterclockwise and remove it from
the headlamp assembly.
4. Put the new bulb into the headlamp assembly and
turn it clockwise until it is tight. Use care not to
touch the bulb with your fingers or hands.
5. Plug in the electrical connector.
6. Put the headlamp assembly back into the vehicle.
7. Install and turn the two pins into the locking feature.
A. Sidemarker Lamp
B. Retainer Clip
C. Front Turn Signal Lamp
D. Daytime Running Lamp
1. Remove the headlamp assembly as mentioned
previously.
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2. Press the retainer clip (B), located behind the turn
signal housing, towards the outside of the vehicle.
3. Pull the turn signal housing out from the vehicle.
4. Press the locking release lever, turn the bulb socket
counterclockwise and remove it from the turn signal
housing.
5. Remove the bulb from the bulb socket.
6. Put the new bulb into the bulb socket.
7. Put the bulb socket into the turn signal housing and
turn it clockwise until it locks.
8. Put the turn signal housing back onto the vehicle
placing the hook and
posts on the inner side into
the alignment holes first and then the outer side into
the retainer bracket until you hear a click.
9. Put the headlamp assembly back into the vehicle.
5-5 1

Center High-Mounted Stoplamp
(CHMSL)
It is recommended that this component be replaced as
a unit by your dealer.
Taillamps
I
A. Turn Signal Lamp
B. Back-up Lamp
C. Stoplamp
1. Remove the two
screws from the rear
lamp assembly.
2. Remove the rear lamp assembly.
3. Press the release tab and turn the bulb socket
counterclockwise
to remove it from the taillamp
housing.
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4. Pull the bulb straight
out from the socket.
5. Press a new bulb into the socket, insert it into the
taillamp housing and turn the socket clockwise into
the taillamp housing until it clicks.
6. Reinstall the rear lamp assembly and tighten the
screws.
Replacement Bulbs
~~~~
For replacement bulbs not listed here, please Consult
your dealer.
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Windshield Wiper Blade Replacement
Windshield wiper blades should be inspected at least
twice a year for wear and cracking. See Wiper
Blade Check under
At Least Twice a Year on page 6-10
for more information.
Replacement blades come in different types and are removed in different ways. For proper type and length,
see Normal Maintenance Replacement
Parts on
page 5-98. Here’s how to remove the shephard’s
hook type.
To replace the windshield wiper blade assembly do the
following:
1. Lift the wiper arm and turn the blade until it is
facing away from the windshield.
2. Push the release lever and slide the wiper assembly
3. Install a new blade by reversing Steps 1 and 2.
toward the driver’s side of the vehicle.
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Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service,
see your Warranty booklet for details.
Poorly
m-. ltained anc nproperly used 1 !s
are dangerous.
Overloading your tires can cause
overheating as
a result of too much
friction. You could have an air-out and a
serious accident. See “Loading Your
Vehicle”
in the Index.
0 Underinflated tires pose the same danger
as overloaded tires. The resulting accident could cause serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be checked
when your tires are cold.
CAUTION: (Continued)
Overinflated tires are more likely to be
cut, punctured or broken by a sudden
impact
- such as when you hit a pothole.
Keep tires at the recommended pressure.
Worn, old tires can cause accidents. If
your tread is badly worn, or if your tires
have been damaged, replace them.
Inflation -- Tire Pressure
The CertificationKire label, which is on the rear edge of
the driver’s door, shows the correct inflation pressures
for your tires when they’re cold. “Cold” means your
vehicle has been sitting for at least three hours
or driven
no more than
1 mile (1.6 km).
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