2015 GMC ACADIA engine oil

Black plate (35,1)GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7576030) - 2015 - CRC - 8/18/14
Instruments and Controls 5-35
If this message continues to appear,
have the system repaired by your
dealer as soon as possible to avoid
damage to the engine.
ENGINE OVERHEATED IDLE
ENGINE
This message displays when the
engine coolant temperature is too
hot. Stop and allow the vehicle to
idle until it cools down. SeeEngine
Coolant Temperature Gauge on
page 5-12.
See Overheated Engine Protection
Operating Mode on page 10-18 for
information on driving to a safe
place in an emergency.
ENGINE OVERHEATED STOP
ENGINE
This message displays and a
continuous chime sounds if the
engine cooling system reaches
unsafe temperatures for operation.
Stop and turn off the vehicle as
soon as it is safe to do so to avoid severe damage. This message
clears when the engine has cooled
to a safe operating temperature.
Engine Oil Messages
CHANGE ENGINE OIL SOON
This message displays when
service is required for the vehicle.
See your dealer. See
Engine Oil on
page 10-7 andMaintenance
Schedule on page 11-2.
Acknowledging the CHANGE
ENGINE OIL SOON message will
not reset the OIL LIFE REMAINING.
See “Oil Life” underDriver
Information Center (DIC) on
page 5-23 andEngine Oil Life
System on page 10-9.
ENGINE OIL LOW —ADD OIL
On some vehicles, this message
displays when the engine oil level
may be too low. Check the oil level
before filling to the recommended
level. If the oil is not low and this message remains on, take the
vehicle to your dealer for service.
See
Engine Oil on page 10-7.
OIL PRESSURE LOW STOP
ENGINE
This message displays when the
vehicle's engine oil pressure is low.
The oil pressure light also appears
on the instrument cluster. See
Engine Oil Pressure Light on
page 5-21.
Stop the vehicle immediately, as
engine damage can result from
driving a vehicle with low oil
pressure. Have the vehicle serviced
by your dealer as soon as possible
when this message is displayed.
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays and a chime
sounds when the cooling system
temperature gets too hot and the
engine further enters the engine

Black plate (17,1)GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7576030) - 2015 - CRC - 8/18/14
Driving and Operating 9-17
{Caution
If the steering wheel is turned
until it reaches the end of its
travel, and is held in that position
while starting the vehicle, damage
may occur to the hydraulic power
steering system and there may be
loss of power steering assist.
Starting Procedure
1. With your foot off the accelerator pedal, turn the ignition to START.
When the engine starts, let go of
the key. The idle speed will slow
down as the engine warms. Do
not race the engine immediately
after starting it. Operate the
engine and transmission gently
to allow the oil to warm up and
lubricate all moving parts.
{Caution
Cranking the engine for long
periods of time, by returning the
ignition to the START position
immediately after cranking has
ended, can overheat and damage
the cranking motor, and drain the
battery. Wait at least 15 seconds
between each try, to let the
cranking motor cool down.
2. If the engine does not start after five to 10 seconds, especially in
very cold weather (below −18°C
or 0°F), it could be flooded with
too much gasoline. Try pushing
the accelerator pedal all the way
to the floor and holding it there
as you hold the key in START
for up to a maximum of
15 seconds. Wait at least
15 seconds between each try, to
allow the cranking motor to cool down. When the engine starts,
let go of the key and accelerator.
If the vehicle starts briefly but
then stops again, repeat these
steps. This clears the extra
gasoline from the engine. Do not
race the engine immediately
after starting it. Operate the
engine and transmission gently
until the oil warms up and
lubricates all moving parts.
Engine Heater
The engine coolant heater can
provide easier starting and better
fuel economy during engine
warm-up in cold weather conditions
at or below 0°F (−18°C). Vehicles
with an engine coolant heater
should be plugged in at least four
hours before starting. Some models
may have an internal thermostat in
the cord which will prevent engine
coolant heater operation at
temperatures above 0°F (−18°C).

Black plate (43,1)GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7576030) - 2015 - CRC - 8/18/14
Driving and Operating 9-43
California Fuel
Requirements
If the vehicle is certified to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specifications. See
the underhood emission control
label. If this fuel is not available in
states adopting California Emissions
Standards, the vehicle will operate
satisfactorily on fuels meeting
federal specifications, but emission
control system performance might
be affected. The malfunction
indicator lamp could turn on and the
vehicle may not pass a smog-check
test. SeeMalfunction Indicator
Lamp on page 5-15. If this occurs,
return to your authorized dealer for
diagnosis. If it is determined that the
condition is caused by the type of
fuel used, repairs may not be
covered by the vehicle warranty.
Fuels in Foreign
Countries
If planning to drive in countries
outside the U.S. or Canada, the
proper fuel might be hard to find.
Check regional auto club or fuel
retail brand websites for availability
in the country where driving. Never
use leaded gasoline, fuel containing
methanol, manganese, or any other
fuel not recommended. Costly
repairs caused by use of improper
fuel would not be covered by the
vehicle warranty.
Fuel Additives
To keep fuel systems clean, TOP
TIER Detergent Gasoline is
recommended. See Fuel on
page 9-42.
If TOP TIER Detergent Gasoline is
not available, one bottle of Fuel
System Treatment PLUS added to
the fuel tank at every engine oil
change, can help. Fuel System
Treatment PLUS is the only gasoline additive recommended by
General Motors. It is available at
your dealer.
Filling the Tank
{Warning
Fuel vapors and fuel fires burn
violently and can cause injury or
death.
.To help avoid injuries to you
and others, read and follow
all the instructions on the fuel
pump island.
.Turn off the engine when
refueling.
.Keep sparks, flames, and
smoking materials away
from fuel.
.Do not leave the fuel pump
unattended.
.Do not reenter the vehicle
while pumping fuel.
(Continued)

Black plate (48,1)GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7576030) - 2015 - CRC - 8/18/14
9-48 Driving and Operating
Properly hooked up, the trailer
lamps also flash, telling other
drivers the vehicle is turning,
changing lanes or stopping.
When towing a trailer, the arrows on
the instrument cluster flash for turns
even if the bulbs on the trailer are
burned out. Check occasionally to
be sure the trailer bulbs are still
working.
Driving on Grades
Reduce speed and shift to a lower
gear before starting down a long or
steep downgrade. If the
transmission is not shifted down, the
brakes might have to be used so
much that they would get hot and no
longer work well.
The vehicle can tow in D (Drive).
Use a lower gear if the transmission
shifts too often.
The Tow/Haul Mode may be used if
the transmission shifts too often.
SeeTow/Haul Mode on page 9-25. When towing at high altitude on
steep uphill grades, engine coolant
boils at a lower temperature than at
normal altitudes. If the engine is
turned off immediately after towing
at high altitude on steep uphill
grades, the vehicle could show
signs similar to engine overheating.
To avoid this, let the engine run
while parked, preferably on level
ground, with the transmission in
P (Park) for a few minutes before
turning the engine off. If the
overheat warning comes on, see
Engine Overheating on page 10-16.
Parking on Hills
{Warning
Parking the vehicle on a hill with
the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface. If parking the rig on a hill:
1. Press the brake pedal, but do
not shift into P (Park) yet. Turn
the wheels into the curb if facing
downhill or into traffic if facing
uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the brake pedal
until the chocks absorb the load.
4. Reapply the brake pedal. Then apply the parking brake and shift
into P (Park).
5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal while you:
.Start the engine.
.Shift into a gear.
.Release the parking brake.
2. Let up on the brake pedal.

Black plate (49,1)GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7576030) - 2015 - CRC - 8/18/14
Driving and Operating 9-49
3. Drive slowly until the trailer isclear 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 on
page 11-2. 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
on page 10-16.
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.

Black plate (1,1)GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7576030) - 2015 - CRC - 8/18/14
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-2
California Perchlorate Materials Requirements . . . . 10-2
Accessories and Modifications . . . . . . . . . . . . . . . 10-2
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-3
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-5
Engine Cover . . . . . . . . . . . . . . . . 10-6
Engine Oil . . . . . . . . . . . . . . . . . . . 10-7
Engine Oil Life System . . . . . . 10-9
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-10
Engine Air Cleaner/Filter . . . . 10-10
Cooling System . . . . . . . . . . . . . 10-11
Engine Coolant . . . . . . . . . . . . . 10-12
Engine Overheating . . . . . . . . 10-16 Overheated Engine
Protection
Operating Mode . . . . . . . . . . . 10-18
Power Steering Fluid . . . . . . . 10-18
Washer Fluid . . . . . . . . . . . . . . . 10-19
Brakes . . . . . . . . . . . . . . . . . . . . . 10-20
Brake Fluid . . . . . . . . . . . . . . . . . 10-21
Battery . . . . . . . . . . . . . . . . . . . . . 10-22
All-Wheel Drive . . . . . . . . . . . . . 10-23
Starter Switch Check . . . . . . . 10-23
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-23
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-23
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-24
Wiper Blade Replacement . . . . . . . . . . . . . . 10-24
Windshield Replacement . . . 10-25
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-25
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-26
LED Lighting . . . . . . . . . . . . . . . 10-26
License Plate Lamp . . . . . . . . 10-26
Replacement Bulbs . . . . . . . . . 10-26
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . 10-27
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-27
Fuses and Circuit
Breakers . . . . . . . . . . . . . . . . . . 10-28
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-28
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-34
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-37
All-Season Tires . . . . . . . . . . . . 10-38
Winter Tires . . . . . . . . . . . . . . . . 10-38
Summer Tires . . . . . . . . . . . . . . 10-39
Tire Sidewall Labeling . . . . . . 10-39
Tire Designations . . . . . . . . . . . 10-41
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . 10-42
Tire Pressure . . . . . . . . . . . . . . . 10-45
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . 10-46
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . 10-47
Tire Inspection . . . . . . . . . . . . . . 10-50
Tire Rotation . . . . . . . . . . . . . . . 10-51

Black plate (6,1)GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7576030) - 2015 - CRC - 8/18/14
10-6 Vehicle Care
1. Remote Negative (−) Terminal.See Jump Starting on
page 10-69.
2. Engine Compartment Fuse
Block on page 10-28.
3. Radiator Pressure Cap (Out of View). See Cooling System on
page 10-11.
4. Engine Coolant Recovery Cap. See Cooling System on
page 10-11.
5. Remote Positive (+) Terminal. See Jump Starting on
page 10-69.
6. Power Steering Reservoir and Cap (Under Engine Cover). See
Power Steering Fluid on
page 10-18.
7. Engine Oil Fill Cap. See “When
to Add Engine Oil” underEngine
Oil on page 10-7. 8. Engine Oil Dipstick (Out of
View). See “Checking Engine
Oil” under Engine Oil on
page 10-7.
9. Engine Cooling Fans (Out of View). See Cooling System on
page 10-11.
10. Engine Cover on page 10-6.
11. Brake Fluid Reservoir. See “Brake Fluid” underBrakes on
page 10-20.
12. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid on
page 10-19.
13. Engine Air Cleaner/Filter on
page 10-10.Engine Cover
1. Oil Fill Cap
2. Engine Cover
To remove:
1. Remove the oil fill cap (1).
2. Raise the engine cover (2) to
release it from the retainers.
3. Lift and remove the engine cover.
4. Reverse Steps 1–3 to reinstall engine cover.

Black plate (7,1)GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-7576030) - 2015 - CRC - 8/18/14
Vehicle Care 10-7
Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.Always use engine oil approved
to the proper specification and of
the proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
.Check the engine oil level
regularly and maintain the
proper oil level. See“Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
.Change the engine oil at the
appropriate time. See Engine Oil
Life System on page 10-9.
.Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
It is a good idea to check the engine
oil level at each fuel fill. In order to
get an accurate reading, the vehicle
must be on level ground. The
engine oil dipstick handle is a loop.
SeeEngine Compartment Overview
on page 10-5 for the location of the
engine oil dipstick.
Obtaining an accurate oil level
reading is essential:
1. If the engine has been running recently, turn off the engine and
allow several minutes for the oil
to drain back into the oil pan.
Checking the oil level too soon
after engine shutoff will not
provide an accurate oil level
reading.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle. 2. Pull out the dipstick and wipe it
with a clean paper towel or cloth,
then push it back in all the way.
Remove it again, keeping the tip
down, and check the level.
When to Add Engine Oil
If the oil is below the cross-hatched
area at the tip of the dipstick, add
1 L (1 qt) of the recommended oil
and then recheck the level. See
“Selecting the Right Engine Oil” in
this section for an explanation of
what kind of oil to use. For engine
oil crankcase capacity, see
Capacities and Specifications on
page 12-2.