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5. Remove all the
wheel nuts.
6. Take flat tire off of the mounting surface.
{CAUTION:
Rust or dirt on the wheel, or on the parts
to which it is fastened, can make the
wheel nuts become loose after time. The
wheel could come off and cause an
accident. When you change a wheel,
remove any rust or dirt from the places
CAUTION: (Continued)
CAUTION: (Continued)
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.
7. Remove any rust or
dirt from the wheel
bolts, mounting
surfaces and
spare wheel.
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{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. Tighten each
wheel nut by
hand until the wheel
is held against
the hub.
9. Lower the vehicle by turning the jack handle
counterclockwise. Lower the jack completely.
{CAUTION:
Incorrect wheel nuts or improperly
tightened wheel nuts can cause the wheel
to come loose and even come off. This
could lead to an accident. Be sure to use
the correct wheel nuts. If you have to
replace them, be sure to get new GM
original equipment wheel nuts. Stop
somewhere as soon as you can and have
the nuts tightened with a torque wrench to
the proper torque speci cation. See
Capacities and Specifications on page 393
for wheel nut torque speci cation.
Notice: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 torque speci cation. See
Capacities and Specifications on page 393for
the wheel nut torque speci cation.
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10. Use the wheel wrench to tighten the nuts
firmly. Turn the wheel wrench clockwise
and in a crisscross sequence as shown.
11. Put the wheel cover or the center cap and
plastic wheel nut caps back on. Remove
any wheel blocks.
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 the vehicle if the cable
holding the spare tire is damaged. For the
secondary latch to work, the tire must be stowed
with the valve stem pointing down.
SeeStoring a Flat or Spare Tire and Tools on
page 375for instructions on storing the spare tire
correctly.
{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.
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To release the spare tire from the secondary latch,
do the following:
{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 the under spare.1. Check under the
vehicle to see if the
cable end is visible.
If the cable is not visible, start this procedure
at Step 6.
2. Turn the wrench counterclockwise until
approximately 6 inches (15 cm) of cable
is exposed.
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3. Connect the jack handle (C) and jack handle
extension (B) together and press the retention
clip (arrow) so it engages.
4. Attach the jack handle/jack handle extension
to the jack. With the UP mark facing you,
slide the ratchet onto the end of the jack
handle extension. The set-up should look like
the picture above.5. Place the jack under the vehicle, ahead of the
rear bumper. Position the center lift point of
the jack under the center of the spare tire and
turn the handle clockwise to raise the jack
until it lifts the secondary latch spring.
6. Keep raising the jack until the spare tire stops
moving upward and is held firmly in place.
This lets you know that the secondary
latch has released. The spare tire is now
balancing on the jack.
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7. Lower the jack by turning the ratchet
counterclockwise. Keep lowering the jack
until the spare tire slides off the jack or
is hanging by the cable.
8. Disconnect the jack handle from the jack and
carefully remove the jack. Use one hand to
push against the spare while firmly pulling the
jack out from under the spare tire with the
other hand.
If the spare tire is hanging from the cable,
slide the ratchet onto the wheel wrench and
insert the wheel wrench into the hoist
shaft hole above the bumper. Turn the wheel
wrench counterclockwise to lower the spare
the rest of the way. Be sure the DOWN mark
on the ratchet is facing you.
9. Tilt the retainer at the end of the cable and
pull it through the wheel opening. Pull the
tire out from under the vehicle.Notice:If you drive away before the spare
tire or secondary latch system cable has been
reinstalled, you could damage your vehicle.
Always reinstall this cable before driving
your vehicle.
10. If the cable is hanging under the vehicle, turn
the wheel wrench in the hoist shaft hole in the
bumper clockwise to raise the cable back up.
Have the hoist assembly inspected as soon as
you can. You will not be able to store a spare or
flat tire using the hoist assembly until it has
been repaired or replaced.
To continue changing the flat tire, return to Step 4
ofRemoving the Flat Tire and Installing the
Spare Tire on page 365.
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Storing a Flat or Spare Tire
and Tools
{CAUTION:
Storing a jack, a tire, or other equipment
in the passenger compartment of the
vehicle could cause injury. In a sudden
stop or collision, loose equipment could
strike someone. Store all these in the
proper place.
1. Put the tire on the ground at the rear of the
vehicle with the valve stem pointed down.2. Pull the retaining bar through the center of the
wheel, making sure it is properly attached.
3. Pull the wheel toward the rear of the vehicle,
keeping the cable tight.
4. With the UP side facing you, attach the
ratchet to the wheel wrench.
5. Put the flat end of the wheel wrench on an
angle through the hole in the rear door
frame, above the bumper.
6. Raise the tire fully against the underside of
the vehicle. Continue turning the ratchet until
the tire is secure and the cable is tight.
The spare tire hoist cannot be overtightened.
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7. Make sure the tire is stored securely. Push,
pull (A), and then try to turn (B) the tire. If the
tire moves, use the ratchet to tighten the cable.
You will hear two clicks when the tire is up all
the way.
8. Return the jacking equipment to the proper
location. Secure the items and replace the
jack cover.
Spare Tire
Your vehicle, when new, had a fully inflated spare
tire. A spare tire may lose air over time, so check its
inflation pressure regularly. SeeIn ation - Tire
Pressure on page 348andLoading Your Vehicle on
page 259for information regarding proper tire
inflation and loading your vehicle. For instructions
on how to remove, install or store a spare tire, see
Removing the Flat Tire and Installing the Spare Tire
on page 365andStoring a Flat or Spare Tire and
Tools on page 375.
Your vehicle may have a different size spare tire
than the road tires originally installed on your
vehicle. This spare tire was developed for use on
your vehicle, so it is all right to drive on it.
After installing the spare tire on your vehicle, you
should stop as soon as possible and make
sure the spare tire is correctly inflated. Have the
damaged or flat road tire repaired or replaced
as soon as you can and installed back onto your
vehicle. This way, a spare tire will be available
in case you need it again.
376