spare tire CADILLAC ESCALADE EXT 2007 3.G User Guide

Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use
spare tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements and additional
General Motors Tire Performance Criteria (TPC)
standards.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specied
government test course. For example, a tire
graded 150 would wear one and a half (1.5) times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from
the norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are
AA, A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured
under controlled conditions on specied
government test surfaces of asphalt and concrete.
A tire marked C may have poor traction
performance.
Warning:The traction grade assigned to this tire
is based on straight-ahead braking traction
tests, and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
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When your vehicle has a at tire, use the following
example as a guide to assist you in the placement
of wheel blocks.
The following information will tell you next how to
use the jack and change a tire.Removing the Spare Tire and Tools
The jack and the wheel blocks are located
under a cover near the passenger side rear seat.
To remove the jack and wheel blocks, do the
following:
1. Remove the jack cover by turning the two
wing nuts one-quarter turn counterclockwise
and pulling the jack cover off.
Rear Seat (Passenger Side) Jack Cover
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2. Remove the black pouch from the storage box.
You now have all of the tools you will need to
lower the spare tire and change a at.To access the spare tire, refer to the following
graphics and instructions:
A. Spare Tire
(Valve Stem
Pointed Down)
B. Hoist Assembly
C. Hoist Cable
D. Tire Retainer
E. Hoist ShaftF. Hoist End of
Extension Tool
G. Hoist Shaft
Access Hole
H. Wheel Wrench
I. Jack Handle Extension
J. Spare Tire Lock
Top-Box Storage Unit (Passenger’s Side)
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1. Open the hoist shaft access cover on the
bumper to access the spare tire lock (J).
2. Insert the ignition key, turn it clockwise and
then pull it to remove the spare tire lock.
3. Assemble the two jack handle extensions (I)
and wheel wrench (H) as shown.4. Insert the open end
of the extension (F)
through the hole
in the rear
bumper (G) (hoist
shaft access hole).
Be sure the hoist end (F) of the extension
connects to the hoist shaft. The ribbed square
end of the extension is used to lower the
spare tire.
5. Turn the wheel wrench 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.
If the spare tire does not lower to the
ground, the secondary latch is engaged
causing the tire not to lower. SeeSecondary
Latch System on page 489for more
information.
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6. Use the wheel
wrench hook that
allows you to
pull the hoist cable
towards you, to
assist in reaching
the spare tire.
7. Tilt the tire retainer
at the end of the
cable when the tire
has been lowered,
so it can be
pulled up through
the wheel opening.
8. Put the spare tire near the at tire.Removing the Flat Tire and
Installing the Spare Tire
Use the following pictures and instructions to
remove the at tire and raise the vehicle.
The tools you will be using include the jack (A),
the wheel blocks (B), the jack handle (C), the jack
handle extensions (D), and the wheel wrench (E).
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Front Tire Flat:If the at tire is on a front tire
of the vehicle, you will need to use the jack
handle (B) and only one jack handle
extension (C). Attach the wheel wrench (D) to
the jack handle extension (C). Attach the
jack handle (B) to the jack (A). Position the jack
on the frame behind the at tire near the
front body mount (E) as shown. Turn the wheel
wrench (D) clockwise to raise the vehicle.
Raise the vehicle far enough off the ground so
there is enough room for the spare tire to
clear the ground.
Front Position
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Rear Tire Flat:If the at tire is on a rear tire
of the vehicle, you will need to use the
jack handle (B) and both jack handle
extensions (C). Attach the wheel wrench (D) to
the jack handle extensions (C). Attach the
jack handle (B) to the jack (A). Use the jacking
pad provided on the rear axle. Turn the
wheel wrench (D) clockwise to raise the
vehicle. Raise the vehicle far enough off the
ground so there is enough room for the spare
tire to clear the ground.
4. Remove all the
wheel nuts.
5. Take off the at tire.
Rear Position
486

{CAUTION:
Rust or dirt on the wheel, or on the parts
to which it is fastened, can make the
wheel nuts become loose after a time. The
wheel could come off and cause an
accident. When you change a wheel,
remove any rust or dirt from the places
where the wheel attaches to the vehicle. In
an emergency, you can use a cloth or a
paper towel to do this; but be sure to use
a scraper or wire brush later, if needed, to
get all the rust or dirt off.
6. Remove any rust or
dirt from the wheel
bolts, mounting
surfaces, and spare
wheel.7. Install the spare tire.{CAUTION:
Never use oil or grease on studs or nuts.
If you do, the nuts might come loose.
Your wheel could fall off, causing a
serious accident.
8. Put the wheel nuts back on with the rounded
end of the nuts toward the wheel after
mounting the spare tire.
9. Tighten each wheel nut by hand. Then use
the wheel wrench to tighten the wheel nuts
until the wheel is held against the hub.
10. Turn the wheel wrench counterclockwise to
lower the vehicle. Lower the jack completely.
487

If you are reinstalling the smooth center cap,
place it on the wheel and tap it into place
until it seats ush with the wheel.
Secondary Latch System
Your vehicle has an underbody-mounted tire hoist
assembly equipped with a secondary latch
system. It is designed to stop the spare tire from
suddenly falling off your vehicle. For the secondary
latch to work, the spare must be installed with
the valve stem pointing down. SeeStoring a Flat
or Spare Tire and Tools on page 492.
{CAUTION:
Before beginning this procedure read all
the instructions. Failure to read and follow
the instructions could damage the hoist
assembly and you and others could get
hurt. Read and follow the instructions
listed next.To release the spare tire from the secondary latch,
do the following:
1. Check under the
vehicle to see if the
cable end is
visible. If the cable
is not visible
proceed to Step 6.
2. If it is visible, rst try to tighten the cable by
turning the wheel wrench clockwise until you
hear two clicks or feel it skip twice. You
cannot overtighten the cable.
3. Loosen the cable by turning the wrench
counterclockwise three or four turns.
4. Repeat this procedure at least two times.
If the spare tire lowers to the ground,
continue with Step 5 ofRemoving the Spare
Tire and Tools on page 478.
489

9. Position the center lift point of the jack under
the center of the spare tire.
10. Turn the wrench clockwise to raise the jack
until it lifts the end tting.
11. Continue raising the jack until the spare tire
stops moving upward and is held rmly in
place. The secondary latch has released and
the spare tire is balancing on the jack.
12. Lower the jack by turning the wheel wrench
counterclockwise. Keep lowering the jack
until the spare tire slides off the jack or
is hanging by the cable.
{CAUTION:
Someone standing too close during the
procedure could be injured by the jack.
If the spare tire does not slide off the jack
completely, make sure no one is behind
you or on either side of you as you pull
the jack out from under the spare.
13. Disconnect the jack handle from the jack and
carefully remove the jack. Use one hand to
push against the spare while rmly pulling the
jack out from under the spare tire with the
other hand.
If the spare tire is hanging from the cable,
insert the hoist end of extension, and wheel
wrench into the hoist shaft hole in the bumper
and turn the wheel wrench counterclockwise
to lower the spare the rest of the way.
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