lock GMC ACADIA 2009 Owner's Manual

Additionally, if your vehicle has
electronic systems such as anti-lock
brakes, rollover airbags, traction
control, and electronic stability
control, the performance of these
systems can be affected.
{CAUTION
If you add different sized wheels,
your vehicle may not provide an
acceptable level of performance
and safety if tires not
recommended for those wheels
are selected. You may increase
the chance that you will crash and
suffer serious injury. Only use GM
specic wheel and tire systems
developed for your vehicle, and
have them properly installed by
a GM certied technician.
SeeBuying New Tires on page 5-49
andAccessories and Modifications
on page 5-3for additional
information.
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 nominalrim 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
Service and Appearance Care 5-51

When using the tire sealant and
compressor kit during cold
temperatures, warm the kit in a
heated environment for 5 minutes.
This will help to inate the tire faster.
Always do a safety check rst.
SeeIf a Tire Goes Flat on
page 5-55. Do not remove any
objects that have penetrated the tire.
1. Remove the tire sealant and
compressor kit from its storage
location. SeeTire Sealant
and Compressor Kit Storage
on page 5-68.
2. Unwrap the sealant/air hose (F)
and the power plug (H).
3. Place the kit on the ground.
Make sure the tire valve
stem is positioned close to the
ground so the hose will reach it.4. Remove the valve stem cap
from the at tire by turning it
counterclockwise.
5. Attach the sealant/air hose (F)
onto the tire valve stem. Turn
it clockwise until it is tight.
6. Plug the power plug (H) into the
accessory power outlet in the
vehicle. Unplug all items from
other accessory power outlets.
SeeAccessory Power Outlet(s)
on page 3-20.
If the vehicle has an accessory
power outlet, do not use the
cigarette lighter.
If the vehicle only has a cigarette
lighter, use the cigarette lighter.
Do not pinch the power plug
cord in the door or window.7. Start the vehicle. The vehicle
must be running while using
the air compressor.
8. Turn the selector switch (A)
counterclockwise to the
Sealant + Air position.
9. Press the on/off (B) button
to turn the tire sealant and
compressor kit on.
The compressor will inject
sealant and air into the tire.
The pressure gage (C) will initially
show a high pressure while the
compressor pushes the sealant
into the tire. Once the sealant is
completely dispersed into the tire,
the pressure will quickly drop and
start to rise again as the tire
inates with air only.
5-62 Service and Appearance Care

10. Inate the tire to the
recommended ination pressure
using the pressure gage (C).
The recommended ination
pressure can be found on the
Tire and Loading Information
label. SeeInflation - Tire
Pressure on page 5-41.
The pressure gage (C) may
read higher than the actual tire
pressure while the compressor is
on. Turn the compressor off to get
an accurate pressure reading.
The compressor may be turned
on/off until the correct pressure is
reached.
Notice:If the recommended
pressure cannot be reached after
approximately 25 minutes, the
vehicle should not be driven
farther. The tire is too severely
damaged and the tire sealant and
compressor kit cannot inate the
tire. Remove the power plug from
the accessory power outlet and
unscrew the inating hose from
the tire valve. SeeRoadside
Assistance Program on page 7-6.11. Press the on/off button (B)
to turn the tire sealant and
compressor kit off.
The tire is not sealed and will
continue to leak air until the
vehicle is driven and the sealant
is distributed in the tire, therefore,
Steps 12 through 18 must be
done immediately after Step 11.
Be careful while handling the tire
sealant and compressor kit as
it could be warm after usage.
12. Unplug the power plug (H) from
the accessory power outlet in
the vehicle.
13. Turn the sealant/air hose (F)
counterclockwise to remove it
from the tire valve stem.
14. Replace the tire valve stem cap.15. Replace the sealant/air
hose (F), and the power
plug (H) back in their original
location.
16. If the at tire was able to inate
to the recommended ination
pressure, remove the maximum
speed label from the sealant
canister (E) and place it in a
highly visible location. The label
is a reminder not to exceed
55 mph (90 km/h) until the
damaged tire is repaired or
replaced.
Service and Appearance Care 5-63

Always do a safety check rst. See
If a Tire Goes Flat on page 5-55.
1. Remove the tire sealant and
compressor kit from its storage
location. SeeTire Sealant
and Compressor Kit Storage
on page 5-68.
2. Unwrap the air only hose (G)
and the power plug (H).
3. Place the kit on the ground.
Make sure the tire valve
stem is positioned close to the
ground so the hose will reach it.
4. Remove the tire valve stem cap
from the at tire by turning it
counterclockwise.
5. Attach the air only hose (G) onto
the tire valve stem by turning it
clockwise until it is tight.
6. Plug the power plug (H) into the
accessory power outlet in the
vehicle. Unplug all items from
other accessory power outlets.
SeeAccessory Power Outlet(s)
on page 3-20.If the vehicle has an accessory
power outlet, do not use the
cigarette lighter.
If the vehicle only has a cigarette
lighter, use the cigarette lighter.
Do not pinch the power plug
cord in the door or window.
7. Start the vehicle. The vehicle
must be running while using
the air compressor.
8. Turn the selector switch (A)
clockwise to the Air Only position.
9. Press the on/off (B) button to turn
the compressor on.
The compressor will inate the
tire with air only.
10. Inate the tire to the
recommended ination pressure
using the pressure gage (C).
The recommended ination
pressure can be found on the
Tire and Loading Information
label. SeeInflation - Tire
Pressure on page 5-41.The pressure gage (C) may
read higher than the actual tire
pressure while the compressor
is on. Turn the compressor
off to get an accurate reading.
The compressor may be
turned on/off until the correct
pressure is reached.
If you inate the tire higher than
the recommended pressure you
can adjust the excess pressure
by pressing the pressure
deation button (D), if equipped,
until the proper pressure reading
is reached. This option is only
functional when using the air
only hose (G).
11. Press the on/off button (B) to
turn the tire sealant and
compressor kit off.
Be careful while handling the tire
sealant and compressor kit as it
could be warm after usage.
12. Unplug the power plug (H) from
the accessory power outlet in
the vehicle.
Service and Appearance Care 5-67

13. Disconnect the air only hose (G)
from the tire valve stem, by
turning it counterclockwise, and
replace the tire valve stem cap.
14. Replace the air only hose (G)
and the power plug (H) and
cord back in its original location.
15. Place the equipment in
the original storage location
in the vehicle.
The tire sealant and compressor kit
has an accessory adapter located
in a compartment on the bottom
of its housing that may be used to
inate air mattresses, balls, etc.Removal and Installation of
the Sealant Canister
To remove the sealant canister:
1. Unwrap the sealant hose.
2. Press the canister release button.
3. Pull up and remove the canister.
4. Replace with a new canister
which is available from your
dealer/retailer.
5. Push the new canister into place.
Tire Sealant and
Compressor Kit Storage
The tire sealant and compressor
kit is located in the storage
compartment on the driver side,
at the rear of the vehicle.1. Press down on the latch tab and
pull the cover off to access the
storage compartment.
2. Press the two tabs on the quick
release buckle to release the
tire sealant and compressor
kit strap.
3. Remove the sealant and
compressor kit from its tray.
To store the tire sealant and
compressor kit, reverse the steps.
5-68 Service and Appearance Care

Changing a Flat Tire
If a tire goes at, avoid further
tire and wheel damage by driving
slowly to a level place. Turn on
the hazard warning ashers.
SeeHazard Warning Flashers
on page 3-5.
{CAUTION
Changing a tire can be
dangerous. The vehicle can slip
off the jack and roll over or fall
on you or other people. You and
they could be badly injured or
even killed. Find a level place to
change your tire. To help prevent
the vehicle from moving:
1. Set the parking brake rmly.
2. Put the shift lever in
P (Park).
(Continued)
CAUTION (Continued)
3. Turn off the engine and do
not restart while the vehicle
is raised.
4. Do not allow passengers to
remain in the vehicle.
To be even more certain the
vehicle will not move, you should
put 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, at
the opposite end of the vehicle.
When the vehicle has a at tire (B),
use the following example as a
guide to assist you in the placement
of wheel blocks (A).A. Wheel Block
B. Flat Tire
The following information explains
how to use the jack and change
a tire.
Removing the Spare Tire
and Tools
The tools needed to remove the
spare tire are located in the storage
compartment on the driver side,
at the rear of the vehicle.
1. Open the jack storage
compartment by pulling on
the latch tab, located toward
the rear of the vehicle, and
pulling the cover off.
Service and Appearance Care 5-69

A. Tool Bag
B. Wing Bolt
C. Jack
2. Remove the wing bolt (B) by
turning it counterclockwise
3. Push the jack (C) up out of the
holding bracket.
4. Turn the jack on its side, with the
bottom facing toward you.
5. Pull the jack straight out,
bottom rst.The tools you will be using include
the jack (A) and lug wrench (B).
Removing the Spare Tire
The compact spare tire is located
under the vehicle, in front of the rear
bumper. SeeCompact Spare Tire
on page 5-81for more information
about the compact spare.A. Rear Convenience Center
B. Lug Wrench
C. Storage Compartment Cap Hole
D. Hoist Shaft
E. Compact Spare Tire
F. Retainer
G. Hoist Shaft Assembly
1. Open the storage compartment
door of the convenience center
that is nearest the liftgate and
remove the cap on the bottom
of the storage compartment.
5-70 Service and Appearance Care

2. Flip the carpet cutout that is
located through the hole of
the storage compartment.
3. Attach the lug wrench into the
hoist shaft.
4. Turn the lug wrench
counterclockwise to lower the
spare tire to the ground. Continue
turning the wrench until the
spare tire can be pulled out
from under the vehicle.5. Tilt the retainer and slip it
through the wheel opening
to remove the spare tire from
the cable.
6. Turn the wrench clockwise to
raise the cable back up after
removing the spare tire.
Do not store a full-size or a at
road tire under the vehicle.
SeeStoring a Flat or Spare
Tire and Tools on page 5-78.
To continue changing the at tire,
seeRemoving the Flat Tire and
Installing the Spare Tire on
page 5-72.If the spare tire will not lower, the
secondary latch could be engaged.
Do the following to check
the cable:
1. Check under the vehicle to see if
the cable is visible.
2. If it is not visible, seeSecondary
Latch System on page 5-76.
If it is visible, rst try to tighten
the cable by turning the lug
wrench clockwise until you hear
two clicks or feel it skip twice.
You cannot over-tighten
the cable.
Service and Appearance Care 5-71

3. Loosen the cable by turning
the wrench counterclockwise
three or four turns.
4. If the spare tire has not lowered,
tighten the cable all the way and
then loosen it at least two times.
If the spare tire did lower to
the ground, continue with Step 5
under “Removing the Spare
Tire (Vehicles with the Rear
Convenience Center)” listed
previously.
5. If you still cannot lower the spare
tire to the ground, seeSecondary
Latch System on page 5-76.Removing the Flat Tire
and Installing the
Spare Tire
1. Do a safety check before
proceeding. SeeChanging a
Flat Tire on page 5-69for more
information.
2. If the vehicle has a wheel cover,
loosen the plastic nut caps with
the wheel wrench. They will not
come off. Then, using the at end
of the wheel wrench, pry along
the edge of the cover until it
comes off. Be careful; the edges
may be sharp. Do not try to
remove the cover with your
bare hands.
Store the wheel cover securely
in the rear of the vehicle until
you have the at tire repaired
or replaced.
If the vehicle has aluminum
wheels, remove the wheel nut
caps using the wheel wrench.3. Loosen the wheel nuts — but do
not remove them — using the
lug wrench. For wheels with
a wheel lock key, use the wheel
lock key between the lock nut
and lug wrench. The key is
supplied in the front passenger
door pocket.
Notice:If this vehicle has wheel
locks and an impact wrench is
used to remove the wheel nuts,
the lock nut or wheel lock key
could be damaged. Do not use
an impact wrench to remove the
wheel nuts if this vehicle has
wheel locks.
5-72 Service and Appearance Care

4. To identify the appropriate
jacking location, nd the
triangle (A) about 12 inches
(30.5 cm) from the front tire or (B)
about 10.5 inches (27 cm)
from the rear tire.
The triangle is located near each
wheel on the vehicle’s exterior.
Notice:If a jack is used to raise
the vehicle without positioning
it correctly, the vehicle could
be damaged. When raising
the vehicle on a jack, avoid
contact with the rear axle
control arms.
5. Do not raise the vehicle yet. Put
the compact spare tire near you.
{CAUTION
Getting under a vehicle when it is
jacked up 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.
{CAUTION
Raising your 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 t the jack lift head into the
proper location before raising
the vehicle.
6. Attach the lug wrench to the
jack, and turn the wrench
clockwise to raise the jack
head 3 inches (7.6 cm).7. Place the jack under the vehicle
as identied in Step 3. Raise the
vehicle by turning the lug wrench
clockwise in the jack. Raise the
vehicle far enough off the ground
so that there is enough room for
the spare tire to t under the
wheel well.
8. Remove all the wheel nuts and
the at tire.
Service and Appearance Care 5-73