2012 GMC ACADIA towing

Black plate (2,1)GMC Acadia/Acadia Denali Owner Manual - 2012
2012 GMC Acadia/Acadia Denali Owner ManualM
Driving and Operating. . . . . . . . 9-1
Driving Information . . . . . . . . . . . . . 9-2
Starting and Operating . . . . . . . 9-15
Engine Exhaust . . . . . . . . . . . . . . 9-22
Automatic Transmission . . . . . . 9-23
Drive Systems . . . . . . . . . . . . . . . . 9-27
Brakes . . . . . . . . . . . . . . . . . . . . . . . 9-27
Ride Control Systems . . . . . . . . 9-30
Cruise Control . . . . . . . . . . . . . . . . 9-32
Object Detection Systems . . . . 9-34
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 9-40
Towing . . . . . . . . . . . . . . . . . . . . . . . 9-44
Conversions and Add-Ons . . . 9-53
Vehicle Care . . . . . . . . . . . . . . . . . 10-1
General Information . . . . . . . . . . 10-2
Vehicle Checks . . . . . . . . . . . . . . . 10-4
Headlamp Aiming . . . . . . . . . . . 10-28
Bulb Replacement . . . . . . . . . . 10-29 Electrical System . . . . . . . . . . . . 10-30
Wheels and Tires . . . . . . . . . . . 10-37
Jump Starting . . . . . . . . . . . . . . . 10-78
Towing . . . . . . . . . . . . . . . . . . . . . . 10-82
Appearance Care . . . . . . . . . . . 10-86
Service and Maintenance . . . 11-1
General Information . . . . . . . . . . 11-1
Maintenance Schedule . . . . . . . 11-3
Special Application Services . . . . . . . . . . . . . . . . . . . . 11-8
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . 11-9
Recommended Fluids, Lubricants, and Parts . . . . . . 11-12
Maintenance Records . . . . . . . 11-14
Technical Data . . . . . . . . . . . . . . . 12-1
Vehicle Identification . . . . . . . . . 12-1
Vehicle Data . . . . . . . . . . . . . . . . . . 12-2 Customer Information
. . . . . . . 13-1
Customer Information . . . . . . . . 13-2
Reporting Safety Defects . . . . 13-19
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . 13-20
OnStar . . . . . . . . . . . . . . . . . . . . . . . 14-1
OnStar Overview . . . . . . . . . . . . . 14-1
OnStar Services . . . . . . . . . . . . . . 14-2
OnStar Additional
Information . . . . . . . . . . . . . . . . . . 14-5
Index . . . . . . . . . . . . . . . . . . . . . i-1

Black plate (16,1)GMC Acadia/Acadia Denali Owner Manual - 2012
1-16 In Brief
Dual Automatic Climate Control System
A. Fan Control
B. AUTO (Auto Operation)
C. Defrost
D. Recirculation
E. REAR (Rear Climate Control)
F. Air Delivery Mode Control
G. Driver Side Temperature Control
H. Display
I. Power (On/Off)
J. Rear Window DefoggerK. Air Conditioning
L. PASS (Passenger)
M. Passenger Side Temperature
Control
See Climate Control Systems on
page 8‑1 orDual Automatic
Climate Control System on page 8‑4
(If Equipped). For more information
about the rear climate control, see
Rear Climate Control System (Rear
Climate Control Only) on page 8‑10
or Rear Climate Control System
(Rear Climate with Rear Seat Audio)
on page 8‑11.
Transmission
Electronic Range Select
(ERS) Mode
ERS mode allows you to choose the
top-gear limit of the transmission
and the vehicle's speed while
driving downhill or towing a trailer.
The vehicle has an electronic
shift position indicator within the
instrument panel cluster. When
using the ERS mode a number will
display next to the L, indicating the
current gear that has been selected.
To use this feature:
1. Move the shift lever to L (Low).
2. Press the plus/minus button located on the shift lever, to
increase or decrease the gear
range available.
See Manual Mode on page 9‑25.

Black plate (35,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Seats and Restraints 3-35
.Liquid pooled on the seat that
has not soaked in may make it
more likely that the passenger
sensing system will turn on the
passenger airbag while a child
restraint or child occupant is on
the seat. If the passenger airbag
is turned on, the on indicator will
be lit.
If the passenger seat gets wet, dry
the seat immediately. If the airbag
readiness light is lit, do not install a
child restraint or allow anyone to
occupy the seat. See Airbag
Readiness Light on page 5‑16 for
important safety information.
The on indicator may be lit if an
object, such as a briefcase,
handbag, grocery bag, laptop or
other electronic device, is put on
an unoccupied seat. If this is not
desired remove the object from
the seat.
{WARNING
Stowing of articles under the
passenger seat or between the
passenger seat cushion and
seatback may interfere with the
proper operation of the passenger
sensing system.
Servicing the
Airbag-Equipped Vehicle
Airbags affect how the vehicle
should be serviced. There are
parts of the airbag system in
several places around the vehicle.
Your dealer and the service manual
have information about servicing
the vehicle and the airbag system.
To purchase a service manual,
see Service Publications Ordering
Information on page 13‑18.
{WARNING
For up to 10 seconds after the
vehicle is turned off and the
battery is disconnected, an airbag
can still inflate during improper
service. You can be injured if you
are close to an airbag when it
inflates. Avoid yellow connectors.
They are probably part of the
airbag system. Be sure to follow
proper service procedures, and
make sure the person performing
work for you is qualified to do so.

Black plate (19,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Instruments and Controls 5-19
Notice:Modifications made to the
engine, transmission, exhaust,
intake, or fuel system of the
vehicle or the replacement of
the original tires with other
than those of the same Tire
Performance Criteria (TPC) can
affect the vehicle's emission
controls and can cause this light
to come on. Modifications to
these systems could lead to
costly repairs not covered by
the vehicle warranty. This could
also result in a failure to
pass a required Emission
Inspection/Maintenance test.
See Accessories and
Modifications on page 10‑3.
This light comes on during a
malfunction in one of two ways:
Light Flashing: A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required. To prevent more serious damage to
the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
.If towing a trailer, reduce the
amount of cargo being hauled as
soon as it is possible.
If the light continues to flash, stop
and park the vehicle. Turn the
vehicle off, wait at least 10 seconds,
and restart the engine. If the light is
still flashing, follow the previous
steps and see your dealer for
service as soon as possible.
Light On Steady: An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might be
required. The following may correct an
emission system malfunction:
.Check that the fuel cap is fully
installed. See
Filling the Tank on
page 9‑42. The diagnostic
system can determine if the
fuel cap has been left off or
improperly installed. A loose or
missing fuel cap allows fuel to
evaporate into the atmosphere.
A few driving trips with the cap
properly installed should turn
the light off.
.Check that good quality fuel
is used. Poor fuel quality
causes the engine not to run as
efficiently as designed and may
cause stalling after start-up,
stalling when the vehicle is
changed into gear, misfiring,
hesitation on acceleration,
or stumbling on acceleration.
These conditions might go away
once the engine is warmed up.

Black plate (21,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Instruments and Controls 5-21
Brake System Warning
Light
The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining
circuit can still work to stop the
vehicle. For normal braking
performance, both circuits need to
be working.
If the warning light comes on, there
is a brake problem. Have the brake
system inspected right away.
MetricEnglish
This light should come on briefly
when the ignition key is turned to
ON/RUN. If it does not come on
then, have it fixed so it will be ready
to warn if there is a problem. This light may also come on due to
low brake fluid. See
Brakes on
page 10‑22 for more information.
When the ignition is on, the brake
system warning light will also come
on when the parking brake is set.
The light will stay on if the parking
brake does not release fully. If it
stays on after the parking brake is
fully released, it means there is a
brake problem.
If the light comes on while driving,
pull off the road and stop carefully.
Make sure the parking brake is
fully released. The pedal may be
harder to push or, the pedal may go
closer to the floor. It may take longer
to stop. If the light is still on, have
the vehicle towed for service. See
Towing the Vehicle on page 10‑82.
{WARNING
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
warning light on can lead to a
crash. If the light is still on after
the vehicle has been pulled off
the road and carefully stopped,
have the vehicle towed for
service.
The brake message remains on
until any DIC button is pressed. the
brake light remains on until the
problem is fixed. See Brake System
Messages on page 5‑38 for more
information.

Black plate (1,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Driving and Operating 9-1
Driving and
Operating
Driving Information
Distracted Driving . . . . . . . . . . . . . 9-2
Defensive Driving . . . . . . . . . . . . . 9-3
Drunk Driving . . . . . . . . . . . . . . . . . 9-3
Control of a Vehicle . . . . . . . . . . . 9-3
Braking . . . . . . . . . . . . . . . . . . . . . . . 9-3
Steering . . . . . . . . . . . . . . . . . . . . . . . 9-4
Off-Road Recovery . . . . . . . . . . . . 9-5
Loss of Control . . . . . . . . . . . . . . . . 9-5
Driving on Wet Roads . . . . . . . . . 9-6
Highway Hypnosis . . . . . . . . . . . . 9-7
Hill and Mountain Roads . . . . . . 9-7
Winter Driving . . . . . . . . . . . . . . . . . 9-8
If the Vehicle Is Stuck . . . . . . . . 9-10
Vehicle Load Limits . . . . . . . . . . 9-10
Starting and Operating
New Vehicle Break-In . . . . . . . . 9-15
Ignition Positions . . . . . . . . . . . . 9-16
Starting the Engine . . . . . . . . . . 9-18
Engine Heater . . . . . . . . . . . . . . . 9-19
Retained AccessoryPower (RAP) . . . . . . . . . . . . . . . 9-20 Shifting Into Park . . . . . . . . . . . . 9-20
Shifting out of Park . . . . . . . . . . 9-21
Parking over Things
That Burn . . . . . . . . . . . . . . . . . . 9-22
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 9-22
Running the Vehicle WhileParked . . . . . . . . . . . . . . . . . . . . . 9-23
Automatic Transmission
Automatic Transmission . . . . . 9-23
Manual Mode . . . . . . . . . . . . . . . . 9-25
Tow/Haul Mode . . . . . . . . . . . . . . 9-26
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . 9-27
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . 9-27
Parking Brake . . . . . . . . . . . . . . . 9-28
Brake Assist . . . . . . . . . . . . . . . . . 9-29
Hill Start Assist (HSA) . . . . . . . 9-29
Ride Control Systems
StabiliTrak®System . . . . . . . . . 9-30
Cruise Control
Cruise Control . . . . . . . . . . . . . . . 9-32
Object Detection Systems
Ultrasonic Parking Assist . . . . 9-34
Rear Vision Camera (RVC) . . . . . . . . . . . . . 9-35
Fuel
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . 9-40
Recommended Fuel . . . . . . . . . 9-40
Gasoline Specifications(U.S. and Canada Only) . . . . 9-40
California Fuel Requirements . . . . . . . . . . . . . . 9-40
Fuels in Foreign Countries . . . 9-41
Fuel Additives . . . . . . . . . . . . . . . 9-41
Filling the Tank . . . . . . . . . . . . . . 9-42
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 9-44
Towing
General TowingInformation . . . . . . . . . . . . . . . . . 9-44
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . 9-45
Trailer Towing . . . . . . . . . . . . . . . . 9-49
Towing Equipment . . . . . . . . . . . 9-51
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . 9-53

Black plate (10,1)GMC Acadia/Acadia Denali Owner Manual - 2012
9-10 Driving and Operating
If the Vehicle Is Stuck
Slowly and cautiously spin the
wheels to free the vehicle when
stuck in sand, mud, ice, or snow.
If the vehicle has a traction system,
it can often help to free a stuck
vehicle. Refer to the vehicle's
traction system in the Index. If stuck
too severely for the traction system
to free the vehicle, turn the traction
system off and use the rocking
method.
{WARNING
If the vehicle's tires spin at high
speed, they can explode, and
you or others could be injured.
The vehicle can overheat,
causing an engine compartment
fire or other damage. Spin the
wheels as little as possible and
avoid going above 55 km/h
(35 mph).For information about using tire
chains on the vehicle, see
Tire
Chains on page 10‑57.
Rocking the Vehicle to Get
It Out
Turn the steering wheel left and
right to clear the area around the
front wheels. Turn off any traction or
stability system. Shift back and forth
between R (Reverse) and a forward
gear, spinning the wheels as little as
possible. To prevent transmission
wear, wait until the wheels stop
spinning before shifting gears.
Release the accelerator pedal
while shifting, and press lightly on
the accelerator pedal when the
transmission is in gear. Slowly
spinning the wheels in the forward
and reverse directions causes a
rocking motion that could free the
vehicle. If that does not get the
vehicle out after a few tries, it might
need to be towed out. If the vehicle
does need to be towed out, see
Towing the Vehicle on page 10‑82.
Vehicle Load Limits
It is very important to know how
much weight your vehicle can
carry. This weight is called the
vehicle capacity weight and
includes the weight of all
occupants, cargo, and all
nonfactory-installed options.
Two labels on your vehicle
show how much weight it may
properly carry, the Tire and
Loading Information label and
the Certification/Tire label.
{WARNING
Do not load the vehicle any
heavier than the Gross
Vehicle Weight Rating
(GVWR), or either the
maximum front or rear Gross
Axle Weight Rating (GAWR).
(Continued)

Black plate (12,1)GMC Acadia/Acadia Denali Owner Manual - 2012
9-12 Driving and Operating
3.Subtract the combined
weight of the driver and
passengers from XXX kg
or XXX lbs.
4.The resulting figure equals
the available amount of cargo
and luggage load capacity.
For example, if the“XXX”
amount equals 1400 lbs and
there will be five 150 lb
passengers in your vehicle,
the amount of available cargo
and luggage load capacity is
650 lbs (1400 −750 (5 x 150)
= 650 lbs).
5.Determine the combined
weight of luggage and cargo
being loaded on the vehicle.
That weight may not safely
exceed the available cargo
and luggage load capacity
calculated in Step 4.
6.If your vehicle will be towing
a trailer, the load from your
trailer will be transferred to
your vehicle. Consult this
manual to determine how this
reduces the available cargo
and luggage load capacity for
your vehicle.
See Trailer Towing on page 9‑49
for important information on
towing a trailer, towing safety
rules and trailering tips.
Example 1
A.
Vehicle Capacity Weight
for Example 1 = 453 kg
(1,000 lbs).
B.Subtract Occupant Weight
@ 68 kg (150 lbs) × 2 =
136 kg (300 lbs).
C.Available Occupant and
Cargo Weight = 317 kg
(700 lbs).