Page 390 of 478

Black plate (62,1)GMC Acadia/Acadia Denali Owner Manual - 2011
10-62 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 automatic transmission shift lever in
P (Park), or shift a manual
transmission to 1 (First) or
R (Reverse).
3. Turn off the engine and do not restart while the vehicle
is raised.
(Continued)
WARNING (Continued)
4. Do not allow passengers toremain in the vehicle.
5. Place wheel blocks on both sides of the tire at the
opposite corner of the tire
being changed.
This vehicle may come with a jack
and spare tire or a tire sealant
and compressor kit. To use the
jacking equipment to change
a spare tire safely, follow the
instructions below. Then see Tire
Changing on page 10‑71. To use
the tire sealant and compressor kit,
see Tire Sealant and Compressor
Kit on page 10‑63. When the vehicle has a flat 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 repair or change a tire.
Page 391 of 478

Black plate (63,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Vehicle Care 10-63
Tire Sealant and
Compressor Kit
{WARNING
Idling a vehicle in an enclosed
area with poor ventilation is
dangerous. Engine exhaust may
enter the vehicle. Engine exhaust
contains Carbon Monoxide (CO)
which cannot be seen or smelled.
It can cause unconsciousness
and even death. Never run the
engine in an enclosed area
that has no fresh air ventilation.
For more information, seeEngine
Exhaust on page 9‑24.
{WARNING
Overinflating a tire could cause
the tire to rupture and you
or others could be injured.
Be sure to read and follow the
tire sealant and compressor kit
instructions and inflate the tire
to its recommended pressure.
Do not exceed the recommended
pressure.
{WARNING
Storing the tire sealant and
compressor kit 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 the tire
sealant and compressor kit in
its original location. If this vehicle has a tire sealant and
compressor kit, there may not be a
spare tire, tire changing equipment,
and on some vehicles there may not
be a place to store a tire.
The tire sealant and compressor
can be used to temporarily seal
punctures up to 6 mm (¼ in) in the
tread area of the tire. It can also be
used to inflate an underinflated tire.
If the tire has been separated from
the wheel, has damaged sidewalls,
or has a large puncture, the tire is
too severely damaged for the tire
sealant and compressor kit to be
effective. See
Roadside Assistance
Program (U.S. and Canada) on
page 13‑8 orRoadside Assistance
Program (Mexico) on page 13‑10.
Read and follow all of the tire
sealant and compressor kit
instructions.
Page 399 of 478
Black plate (71,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Vehicle Care 10-71
2. Press the two tabs on the quickrelease 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.
Tire Changing
Removing 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.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 and remove the
tool bag (A). 4. Turn the jack on its side, with the
bottom facing toward you.
5. Pull the jack straight out, bottom first.
The tools you will be using include
the jack (A) and lug wrench (B).
Page 400 of 478
Black plate (72,1)GMC Acadia/Acadia Denali Owner Manual - 2011
10-72 Vehicle Care
Removing the Spare Tire
The compact spare tire is located
under the vehicle, in front of the rear
bumper. SeeCompact Spare Tire
on page 10‑82 for more information
about the compact spare.
A. Rear Convenience Center
B. Lug Wrench C. Storage Compartment Cap
D. Hoist Shaft
E. Compact Spare Tire
F. Retainer
1. Open the storage compartment
door of the convenience
center (A) that is nearest the
liftgate and remove the cap (C)
on the bottom of the storage
compartment.
2. Open the carpet cutout that is located through the hole of the
storage compartment (C).
3. Attach the lug wrench (B) into the hoist shaft (D). 4. Turn the lug wrench (B)
counterclockwise to lower the
spare tire (E) to the ground.
Continue turning the wrench
until the spare tire can be pulled
out from under the vehicle.
Page 401 of 478

Black plate (73,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Vehicle Care 10-73
5. Tilt the retainer (F) and slip itthrough the wheel opening to
remove the spare tire (E) from
the cable.
6. Turn the wrench (B) clockwise to raise the cable back up after
removing the spare tire.
Do not store a full‐size or a
flat road tire under the vehicle.
See “Storing a Flat or Spare Tire
and Tools” later in this section. To continue changing the flat tire,
see
“Removing the Flat Tire and
Installing the Spare Tire” later in
this section.
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, see Secondary
Latch System on page 10‑80. If it is visible, first 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.
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, see
Secondary Latch System on
page 10‑80.
Page 402 of 478

Black plate (74,1)GMC Acadia/Acadia Denali Owner Manual - 2011
10-74 Vehicle Care
Removing the Flat Tire and
Installing the Spare Tire
1. Do a safety check beforeproceeding. See If a Tire Goes
Flat on page 10‑61 for 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
flat 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 flat 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.
4. To identify the appropriate
jacking location, find 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.
Page 403 of 478

Black plate (75,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Vehicle Care 10-75
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. Attach the lug wrench to the
jack, and turn the wrench
clockwise to raise the jack
head 3 inches (7.6 cm).
6. Do not raise the vehicle yet. Put the compact spare tire near you.
{WARNING
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.
{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.
7. 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 fit under the wheel well.
8. Remove all the wheel nuts and the flat tire.
9. Remove the plastic spare tire
heat shield by pulling the rubber
latch. Store the plastic spare tire
heat shield. See “Storing a Flat
or Spare Tire and Tools” later in
this section for more information.
Page 404 of 478

Black plate (76,1)GMC Acadia/Acadia Denali Owner Manual - 2011
10-76 Vehicle Care
{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, 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. SeeIf a Tire
Goes Flat on page 10‑61.
{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. 10. Remove any rust or dirt from
the wheel bolts, mounting
surfaces, and spare wheel.
11. Place the spare tire on the wheel mounting surface.
12. Put the nuts on by hand by turning them clockwise until
the wheel is held against the
mounting surface. Make sure
the rounded end is toward the
wheel.
13. Lower the vehicle by attaching the lug wrench to the jack
and turning the 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
(Continued)
WARNING (Continued)
to the proper torque specification
after replacing. Follow the torque
specification supplied by the
aftermarket manufacturer when
using accessory locking wheel
nuts. SeeCapacities and
Specifications on page 12‑2
for original equipment wheel
nut torque specifications.
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 specification.
See Capacities and Specifications
on page 12‑2 for the wheel nut
torque specification.