2017 GMC ACADIA LIMITED automatic transmission

GMC Acadia Limited Owner Manual (GMNA-Localizing-U.S.-10283134) -
2017 - crc - 3/31/16
Driving and Operating 181
To use this feature:1. Move the shift lever to L (Low).
2. Press + (Plus) or −(Minus) on
the shift lever to increase or
decrease the gear range
available.
When you shift from D (Drive) to
L (Low), the transmission will shift to
a pre-determined lower gear range.
The highest gear available for this
pre-determined range is displayed
next to the L in the DIC. See Driver
Information Center (DIC) 0116. The
number displayed in the DIC is the
highest gear that the transmission
will be allowed to operate in. This
means that all gears below that number are available. For example,
when 4 (Fourth) is shown next to the
L, 1 (First) through 4 (Fourth) gears
are automatically shifted by the
vehicle. The transmission will not
shift into 5 (Fifth) until the + (Plus)
button is used or you shift back into
D (Drive).
While in L (Low), the transmission
will prevent shifting to a lower gear
range if the engine speed is too
high. You have a brief period of time
to slow the vehicle. If vehicle speed
is not reduced within the time
allowed, the lower gear range shift
will not be completed. You must
further slow the vehicle, then press
the
−(Minus) button to the desired
lower gear range.
Automatic Engine Grade Braking is
not available when the ERS is
active. It is available in D (Drive) for
both normal and Tow/Haul Mode.
While using the ERS, cruise control
and the Tow/Haul Mode can be
used. See “Tow/Haul Mode”
following.
Tow/Haul Mode
_
Mode : If equipped with Tow/
Haul mode, the button is on the
center stack under the climate
controls.
Press the button to activate the
system. Press it again to deactivate
the system. This feature can assist
when towing or hauling a
heavy load.
When Tow/Haul is activated, the
Tow/Haul symbol will come on in the
instrument cluster. See Driving
Characteristics and Towing
Tips 0200.
Automatic Engine Grade
Braking
Automatic Engine Grade Braking
assists when driving on a downhill
grade. It maintains vehicle speed by
automatically implementing a shift
schedule that uses the engine and
the transmission to slow the vehicle.
The system will automatically
command downshifts to reduce
vehicle speed, until the brake pedal
is no longer being pressed.

GMC Acadia Limited Owner Manual (GMNA-Localizing-U.S.-10283134) -
2017 - crc - 3/31/16
182 Driving and Operating
While in the Electronic Range
Select (ERS) mode, grade braking
is deactivated, allowing the driver to
select a range and limiting the
highest gear available. Grade
braking is available for normal
driving and in Tow/Haul Mode.
SeeAutomatic Transmission 0179.Drive Systems
All-Wheel Drive
Vehicles with this feature transfer
engine power, as required, to all
four wheels. It is fully automatic, and
adjusts itself as needed for road
conditions.
When using a compact spare tire on
an AWD vehicle, the system
automatically detects the compact
spare and reduces AWD
performance to protect the system.
To restore full AWD operation and
prevent excessive wear on the
system, replace the compact spare
with a full-size tire as soon as
possible. See Compact Spare
Tire 0270.
Brakes
Antilock Brake
System (ABS)
This vehicle has an Antilock Brake
System (ABS), an advanced
electronic braking system that helps
prevent a braking skid.
When the vehicle begins to drive
away, ABS checks itself.
A momentary motor or clicking noise
may be heard while this test is going
on, and it may even be noticed that
the brake pedal moves a little. This
is normal.
If there is a problem with ABS, this
warning light stays on. See Antilock
Brake System (ABS) Warning
Light 0112.

GMC Acadia Limited Owner Manual (GMNA-Localizing-U.S.-10283134) -
2017 - crc - 3/31/16
Driving and Operating 203
5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brake pedalwhile you:
.Start the engine.
. Shift into a gear.
. Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer
Towing
The vehicle needs service more
often when pulling a trailer. See the
Maintenance Schedule 0289.
Things that are especially important
in trailer operation are automatic
transmission fluid, engine oil, axle
lubricant, belts, cooling system and
brake system. Inspect these before
and during the trip.
Check periodically to see that all
hitch nuts and bolts are tight.
Engine Cooling When Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. See Engine
Overheating 0222.
Trailer Towing
Three important considerations
have to do with weight:
.
The weight of the trailer.
. The weight of the trailer tongue.
. The total weight on the vehicle's
tires.
Weight of the Trailer
How heavy can a trailer safely be?
Speed, altitude, road grades,
outside temperature, special
equipment, and the amount of
tongue weight the vehicle can carry
must be considered. See “Weight of
the Trailer Tongue” later in this
section for more information.
Maximum trailer weight is calculated
assuming only the driver is in the
tow vehicle and it has all the required trailering equipment. The
weight of additional optional
equipment, passengers and cargo in
the tow vehicle must be subtracted
from the maximum trailer weight.
Use the following chart to determine
how much the vehicle can weigh,
based upon the vehicle model and
options.

GMC Acadia Limited Owner Manual (GMNA-Localizing-U.S.-10283134) -
2017 - crc - 3/30/16
208 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 209
California Proposition65 Warning . . . . . . . . . . . . . . . . . 209
California Perchlorate Materials Requirements . . . . . 209
Accessories and Modifications . . . . . . . . . . . . . . . . 209
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 210
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 211
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 212
Engine Cover . . . . . . . . . . . . . . . . . 213
Engine Oil . . . . . . . . . . . . . . . . . . . . 213
Engine Oil Life System . . . . . . . 216
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 216
Engine Air Cleaner/Filter . . . . . . 217
Cooling System . . . . . . . . . . . . . . 218
Engine Coolant . . . . . . . . . . . . . . . 219
Engine Overheating . . . . . . . . . . 222
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . 223
Power Steering Fluid . . . . . . . . . 224
Washer Fluid . . . . . . . . . . . . . . . . . 224 Brakes . . . . . . . . . . . . . . . . . . . . . . . 225
Brake Fluid . . . . . . . . . . . . . . . . . . . 226
Battery - North America . . . . . . 227
All-Wheel Drive . . . . . . . . . . . . . . . 228
Starter Switch Check . . . . . . . . . 228
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 228
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 229
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 229
Wiper Blade Replacement . . . . 229
Windshield Replacement . . . . . 230
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 231
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 231
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 231
LED Lighting . . . . . . . . . . . . . . . . . 231
License Plate Lamp . . . . . . . . . . 231
Replacement Bulbs . . . . . . . . . . . 232
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . 232
Electrical System Overload . . . 232
Fuses and Circuit Breakers . . . 233 Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 233
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 239
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 242
All-Season Tires . . . . . . . . . . . . . . 243
Winter Tires . . . . . . . . . . . . . . . . . . 243
Summer Tires . . . . . . . . . . . . . . . . 243
Tire Sidewall Labeling . . . . . . . . 244
Tire Designations . . . . . . . . . . . . . 246
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 247
Tire Pressure . . . . . . . . . . . . . . . . . 249
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 250
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 251
Tire Inspection . . . . . . . . . . . . . . . . 254
Tire Rotation . . . . . . . . . . . . . . . . . 255
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 256
Buying New Tires . . . . . . . . . . . . . 256
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 258
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 258
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 260
Wheel Replacement . . . . . . . . . . 260

GMC Acadia Limited Owner Manual (GMNA-Localizing-U.S.-10283134) -
2017 - crc - 3/30/16
216 Vehicle Care
trash or pouring it on the ground,
into sewers, or into streams or
bodies of water. Recycle it by taking
it to a place that collects used oil.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system
that indicates when to change the
engine oil and filter. This is based
on a combination of factors which
include engine revolutions, engine
temperature, and miles driven.
Based on driving conditions, the
mileage at which an oil change is
indicated can vary considerably. For
the oil life system to work properly,
the system must be reset every time
the oil is changed.
When the system has calculated
that oil life has been diminished, it
indicates that an oil change is
necessary. A CHANGE ENGINE
OIL SOON message comes on.
Change the oil as soon as possible
within the next 1 000 km (600 mi).
It is possible that, if driving under
the best conditions, the oil life
system might indicate that an oilchange is not necessary for up to a
year. The engine oil and filter must
be changed at least once a year
and, at this time, the system must
be reset. Your dealer has trained
service people who will perform this
work and reset the system. It is also
important to check the oil regularly
over the course of an oil drain
interval and keep it at the proper
level.
If the system is ever reset
accidentally, the oil must be
changed at 5 000 km (3,000 mi)
since the last oil change.
Remember to reset the oil life
system whenever the oil is changed.
How to Reset the Engine Oil
Life System
Reset the system whenever the
engine oil is changed so that the
system can calculate the next
engine oil change. To reset the
system:
1. Turn the ignition to ON/RUN, with the engine off. 2. Press the vehicle information
button until OIL LIFE
REMAINING displays.
3. Press and hold
Vuntil “100%”
is displayed. Three chimes
sound and the CHANGE
ENGINE OIL SOON message
goes off.
4. Turn the key to LOCK/OFF.
If the CHANGE ENGINE OIL SOON
message comes back on when the
vehicle is started, the engine oil life
system has not been reset. Repeat
the procedure.
Automatic Transmission
Fluid
It is not necessary to check the
transmission fluid level.
A transmission fluid leak is the only
reason for fluid loss. If a leak
occurs, take the vehicle to the
dealer and have it repaired as soon
as possible.
Change the fluid at the intervals
listed in Maintenance Schedule
0 289, and be sure to use the

GMC Acadia Limited Owner Manual (GMNA-Localizing-U.S.-10283134) -
2017 - crc - 3/30/16
Vehicle Care 217
transmission fluid listed in
Recommended Fluids and
Lubricants0298.
Caution
Use of the incorrect automatic
transmission fluid may damage
the vehicle, and the damage may
not be covered by the vehicle
warranty. Always use the
automatic transmission fluid listed
in Recommended Fluids and
Lubricants 0298.
The transmission fluid will not reach
the end of the dipstick unless the
transmission is at operating
temperature. If you need to check
the transmission fluid level, please
take the vehicle to your dealer.
Engine Air Cleaner/Filter
See Engine Compartment Overview
0 212 for the location of the engine
air cleaner/filter.
When to Inspect the Engine Air
Cleaner/Filter
For intervals on changing and
inspecting the engine air cleaner/
filter, see Maintenance
Schedule 0289.
How to Inspect the Engine Air
Cleaner/Filter
Do not start the engine or have the
engine running with the engine air
cleaner/filter housing open. Before
removing the engine air cleaner/
filter, make sure that the engine air
cleaner/filter housing and nearby
components are free of dirt and
debris. Remove the engine air
cleaner/filter. Lightly tap and shake
the engine air cleaner/filter (away
from the vehicle), to release loose
dust and dirt. Inspect the engine air
cleaner/filter for damage, and
replace if damaged. Do not clean
the engine air cleaner/filter or
components with water or
compressed air. To inspect or replace the engine air
cleaner/filter:
1. Air Duct Clamp
2. Electrical Connector
3. Screws
1. Loosen the air duct clamp (1).
2. Disconnect the electrical
connector (2).
3. Remove the screws (3) and lift the cover assembly.
4. Inspect or replace the air cleaner/filter.

GMC Acadia Limited Owner Manual (GMNA-Localizing-U.S.-10283134) -
2017 - crc - 3/30/16
228 Vehicle Care
Infrequent Usage: Remove the
black, negative (−) cable from the
battery to keep the battery from
running down.
Extended Storage: Remove the
black, negative (−) cable from the
battery or use a battery trickle
charger.
All-Wheel Drive
Transfer case fluid does not require
checking unless there is a fluid leak
or unusual noise. If required, have
the transfer case serviced by your
dealer.
Starter Switch Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle.
2. Apply both the parking brake and the regular brake.
Do not use the accelerator
pedal, and be ready to turn off
the engine immediately if it
starts.
3. Try to start the engine in each gear. The vehicle should start
only in P (Park) or N (Neutral).
If the vehicle starts in any other
position, contact your dealer for
service.
Automatic Transmission
Shift Lock Control
Function Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle. It should be
parked on a level surface.
2. Apply the parking brake. Be ready to apply the regular
brake immediately if the vehicle
begins to move.
3. With the engine off, turn the ignition on, but do not start the
engine. Without applying the
regular brake, try to move the
shift lever out of P (Park) with
normal effort. If the shift lever
moves out of P (Park), contact
your dealer for service.

GMC Acadia Limited Owner Manual (GMNA-Localizing-U.S.-10283134) -
2017 - crc - 3/30/16
Vehicle Care 247
Tire Terminology and
Definitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch of
the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight
:The
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.
Aspect Ratio
:The relationship
of a tire's height to its width.
Belt
:A rubber coated layer of
cords between the plies and the
tread. Cords may be made from
steel or other reinforcing
materials. Bead
:The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire
:A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread.
Cold Tire Pressure
:The
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire
Pressure 0249.
Curb Weight
:The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil,
and coolant, but without
passengers and cargo.
DOT Markings
:A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S. Department of Transportation
(DOT) Motor Vehicle Safety
Standards. The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also
identify the tire manufacturer,
production plant, brand, and
date of production.
GVWR
:Gross Vehicle Weight
Rating. See Vehicle Load
Limits 0167.
GAWR FRT
:Gross Axle Weight
Rating for the front axle. See
Vehicle Load Limits 0167.
GAWR RR
:Gross Axle Weight
Rating for the rear axle. See
Vehicle Load Limits 0167.
Intended Outboard Sidewall
:
The side of an asymmetrical tire
that must always face outward
when mounted on a vehicle.
Kilopascal (kPa)
:The metric
unit for air pressure.