Page 340 of 447
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.
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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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Page 352 of 447

If a Tire Goes Flat
It’s unusual for a tire to “blowout” while you’re driving,
especially
if you maintain your tires properly. If air goes
out
of a tire, it’s much more likely to ieak out siowiy.
But if you should ever have a “blowout”, here are a few
tips about what
to expect and what to do:
If a front tire fails, the flat tire will create a drag that
pulls the vehicle toward that side. Take your foot
off the
accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake
to
a stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like a
skid and may require the same correction you’d use
in a skid.
In any rear blowout, remove your foot from the
accelerator pedal. Get the vehicle under control by
steering the way you want the vehicle
to go. It may be
very bumpy and noisy, but you can still steer. Gently
brake to a stop
- well off the road if possible.
If a tire goes flat, the next part shows how to use your
jacking equipment to change a flat tire safely.
Changing a Flat Tire
If a tire goes flat, avoid further tire and wheel damage
by driving slowly to a level place. Turn on your
hazard warning
fi hers.
Changing a tire can cause an injury. The
vehicle can slip
off the jack and roll over you
or other people. You and they could be badly injured. Find a level place to change your tire.
To help prevent the vehicle from moving:
1. Set the parking brake firmly.
2. Put the shift lever in PARK (P).
3. Turn off the engine.
4. Put the wheel blocks at the front and rear
of the tire farthest away from the one
being changed. That would be the tire on
the other side
of the vehicle, at the
opposite end.
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c
Removing the Spare Tire and Tools
I I
The following steps will tell you how to use the jack and
change a tire.
Yukon Denali (Rear Access Panel)
A. Tool Kit with Jack Tools and Gloves
B. Retaining Bracket and Wing Nut
C. Wing Nut Holding Tire Blocks
D. Tire Blocks
E. Bottle Jack
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Yukon XL Denali
For Yukon Denali, the equipment is located behind the
left trim panel in the rear of the vehicle. Unlatch the
release lever to open the trim panel door. Skip the first
step and follow the last three.
For Yukon
XL Denaii, the equipment you'ii need is
under the storage tray in the left trim panel.
1. Remove the tray to access the tools.
2. There is a wing nut used to retain the tool kit. To
remove it, turn the wing nut counterclockwise.
3. To release the bottle jack from its holder, turn the
knob on the bottle jack counterclockwise to lower
the jack head.
4. The wheel blocks and the wheel block retainer can
be removed by turning the wing nut
counterclockwise.
You'll use the jack handle extensions and the wheel
wrench to remove the underbody-mounted spare tire.
A. Bottle Jack
B. Wheel Blocks
C. Wing Nut Holding Tire Blocks
D. Mounting Bracket
E. Removable Tray
F. Retaining Hook
G. Retaining Bracket and Wing Nut
H. Tool Kit with Jack Tools and Gloves
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A. Spare Tire (Valve Stem Pointed Up)
B. Hoist Assembly
C. Hoist Cable
D. Tire Retainer
E. Hoist Shaft
F. Hoist End of Extension Tool
G. Hoist Shaft Access Hole
H. Wheel Wrench
I. Jack Handle Extensions
J. Hoist Lock (If Equipped)
1. If your vehicle is equipped with a hoist lock (J),
open the spare tire lock cover on the bumper
and
use the ignition key to remove the lock.
2. Assemble the wheel wrench (H) and the two jack
handle extensions
(I) as shown.
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1
3. Insert the hoist end
(open end)
(F) of the
extension through
the hole
(G) in the rear
bumper.
Be sure the hoist end of the extension connects
into the hoist shaft (E). The ribbed square end
of the extension
is used to lower the spare tire.
4. Turn the wheel wrench (H) counterclockwise to
lower the spare tire to the ground. Continue to
turn the wheel wrench until the spare tire can be
pulled out from under the vehicle.
II
5. The wheel wrench has
a hook that allows you
to pull the hoist
cable towards you
to
assist in reaching
the spare tire.
6. When the tire has been
lowered, tilt the
retainer
(D) at the end
of the cable so it
can be pulled up
through the wheel
opening.
7. Put the spare tire near the flat tire.
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