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258 Vehicle Care
Warning (Continued)
developed for the vehicle, and
have them properly installed by a
GM certified technician.
See Buying New Tires 0256 and
Accessories and Modifications
0 211.
Wheel Covers
Installation
Tighten the wheel nut caps by hand
while pressing on the center of the
wheel cover with the other hand.
Then tighten an additional
one-quarter turn with the wheel
wrench.
Uniform Tire Quality
Grading
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 tires,
compact 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.
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
All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test
course. For example, a tire
graded 150 would wear one and
one-half (1½) 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 significantly from the
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Chevrolet Spark Owner Manual (GMNA-Localizing-U.S./Canada-11348464) -
2018 - crc - 9/19/17
262 Vehicle Care
{Warning
Changing a tire can be
dangerous. The vehicle can slip
off the jack and roll over or fall
causing injury or death. Find a
level place to change the tire. To
help prevent the vehicle from
moving:1. Set the parking brake firmly.
2. Put an automatictransmission in P (Park) or a
manual transmission in
1 (First) or R (Reverse).
3. Turn off the engine and do not restart while the vehicle
is raised.
4. Do not allow passengers to remain in the vehicle.
5. Place wheel blocks, if equipped, on both sides of
the tire at the opposite
corner of the tire being
changed. When the vehicle has a flat tire (2),
use the following example as a
guide to assist in the placement of
the wheel blocks (1), if equipped.
1. Wheel Block (If Equipped)
2. Flat Tire
The following information explains
how to repair or change a tire.
Tire Changing
Removing the Spare Tire and
Tools
The spare tire and tools are located
in the storage compartment in the
rear of the vehicle.
1. Strap
2. Jack
1. Wheel Wrench
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Vehicle Care 263
2. Screwdriver
3. Tow Eye
4. Screwdriver Handle
5. Jack Handle Extension
To access the spare tire and tools:1. Open the liftgate. See Liftgate
0 38.
2. Lift the trim cover.
3. Remove the jack, tools, and spare tire.
4. Place them near the tire being changed.
Removing the Flat Tire and
Installing the Spare Tire
1. Do a safety check beforeproceeding. See If a Tire Goes
Flat 0261.
2. If there is a wheel cover, remove the wheel nut caps to
access the wheel nuts.
3. Turn the wheel wrenchcounterclockwise to loosen the
wheel nuts. Do not remove
them yet.
4. Place the jack at the positionmarked with a half circle.
5. Attach the jack handleextension to the jack by sliding
the hook through the end of
the jack.
6. Turn the wheel wrench clockwise until the lift head is
firmly contacting the proper
lifting point nearest the flat tire.
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Chevrolet Spark Owner Manual (GMNA-Localizing-U.S./Canada-11348464) -
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264 Vehicle Care
{Warning
Getting under a vehicle when it is
lifted on a jack is dangerous.
If the vehicle slips off the jack,
you could be badly injured or
killed. Never get under a vehicle
when it is supported only by
a jack.
{Warning
Raising the vehicle with the jack
improperly positioned can
damage the vehicle and even
make the vehicle fall. To help
avoid personal injury and vehicle
damage, be sure to fit the jack lift
head into the proper location
before raising the vehicle.
{Warning
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the
appropriate safety equipment and
training. If a jack is provided with
the vehicle, it is designed only for
changing a flat tire. If it is used for
anything else, you or others could
be badly injured or killed if the
vehicle slips off the jack. If a jack
is provided with the vehicle, only
use it for changing a flat tire.
7. Turn the wheel wrench clockwise to raise the vehicle
far enough off the ground so
there is enough room for the
spare tire to fit underneath the
wheel well.
8. Turn the wheel nuts counterclockwise to
remove them.
9. Remove the flat tire.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any
rust or dirt from places where the
wheel attaches to the vehicle. In
an emergency, a cloth or a paper
towel can be used; however, use
a scraper or wire brush later to
remove all rust or dirt.
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Vehicle Care 265
10. Remove any rust or dirt fromthe wheel bolts, mounting
surfaces, and spare wheel.
11. Place the spare tire on the wheel-mounting surface.
{Warning
Never use oil or grease on bolts
or nuts because the nuts might
come loose. The vehicle's wheel
could fall off, causing a crash.
12. Reinstall the wheel nuts. Turn each nut clockwise, by hand,
until the wheel is held against
the hub.
13. Lower the vehicle by turning the wheel wrench
counterclockwise. Lower the
jack completely.
{Warning
Wheel nuts that are improperly or
incorrectly tightened can cause
the wheels to become loose or
come off. The wheel nuts should
be tightened with a torque wrench
to the proper torque specification
after replacing. Follow the torque
specification supplied by the
aftermarket manufacturer when
using accessory locking wheel
nuts. See Capacities and
Specifications 0298 for original
equipment wheel nut torque
specifications.
Caution
Improperly tightened wheel nuts
can lead to brake pulsation and
rotor damage. To avoid expensive
brake repairs, evenly tighten the
wheel nuts in the proper
sequence and to the proper
(Continued)
Caution (Continued)
torque specification. See
Capacities and Specifications
0298 for the wheel nut torque
specification.
14. Tighten the wheel nuts firmly with the wheel wrench in a
crisscross sequence, as
shown.