2012 GMC ACADIA headlamp

Black plate (8,1)GMC Acadia/Acadia Denali Owner Manual - 2012
6-8 Lighting
EPM works to prevent excessive
discharge of the battery. It does this
by balancing the generator's output
and the vehicle's electrical needs.
It can increase engine idle speed to
generate more power whenever
needed. It can temporarily reduce
the power demands of some
accessories.
Normally, these actions occur in
steps or levels, without being
noticeable. In rare cases at the
highest levels of corrective action,
this action may be noticeable to the
driver. If so, a DIC message might
be displayed, such as BATTERY
SAVER ACTIVE, BATTERY
VOLTAGE LOW, or LOW BATTERY.
If one of these messages displays,
it is recommended that the driver
reduce the electrical loads as much
as possible. SeeDriver Information
Center (DIC) (Without DIC Buttons)
on page 5‑30 orDriver Information
Center (DIC) (With DIC Buttons) on
page 5‑25.Battery Power Protection
This feature helps prevent the
battery from being drained, if the
interior courtesy lamps or reading
lamps are accidentally left on.
If any of these lamps are left on,
they automatically turn off after
10 minutes, if the ignition is off.
The lamps will not come back on
again until one of the following
occurs:
.The ignition is turned on.
.The exterior lamps control is
turned off, then on again.
The headlamps will time out after
10 minutes, if they are manually
turned on while the ignition is on
or off.

Black plate (9,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Driving and Operating 9-9
WARNING (Continued)
carbon monoxide (CO) which
cannot be seen or smelled.
It can cause unconsciousness
and even death.
If the vehicle is stuck in the snow:
.Clear away snow from around
the base of your vehicle,
especially any that is blocking
the exhaust pipe.
.Check again from time to
time to be sure snow does
not collect there.
.Open a window about
5 cm (2 in) on the side of the
vehicle that is away from the
wind to bring in fresh air.(Continued)
WARNING (Continued)
.Fully open the air outlets on
or under the instrument
panel.
.Adjust the climate control
system to a setting that
circulates the air inside the
vehicle and set the fan
speed to the highest setting.
See“Climate Control
Systems” in the Index.
For more information about
carbon monoxide, see Engine
Exhaust on page 9‑22.
Run the engine for short periods
only as needed to keep warm, but
be careful. To save fuel, run the engine for only
short periods as needed to warm
the vehicle and then shut the engine
off and close the window most of
the way to save heat. Repeat this
until help arrives but only when you
feel really uncomfortable from the
cold. Moving about to keep warm
also helps.
If it takes some time for help to
arrive, now and then when you run
the engine, push the accelerator
pedal slightly so the engine runs
faster than the idle speed. This
keeps the battery charged to restart
the vehicle and to signal for help
with the headlamps. Do this as little
as possible to save fuel.

Black plate (53,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Driving and Operating 9-53
*The fuse for this circuit is installed
in the underhood electrical center,
but the wires are not connected.
They should be connected by your
dealer or a qualified service center.
If the back-up lamp circuit is not
functional, contact your dealer.
If a remote (non-vehicle) battery is
being charged, press the Tow/Haul
mode switch located on the center
console near the climate controls.
This will boost the vehicle system
voltage and properly charge the
battery. If the trailer is too light for
Tow/Haul mode, turn on the
headlamps (non‐HID only) as a
second way to boost the vehicle
system and charge the battery.Electric Trailer Brake Control
Wiring Provisions
These wiring provisions for an
electric trailer brake controller are
included with the vehicle as part
of the trailer wiring package.
The instrument panel contains
blunt cut wires behind the steering
column for the electric trailer brake
controller. The harness contains the
following wires:
.Red/Black: Power Supply
.White: Brake Switch Signal
.Gray: Illumination
.Dark Blue: Trailer Brake Signal
.Black: Ground
The electric trailer brake controller
should be installed by your dealer or
a qualified service center.
Conversions and
Add-Ons
Add-On Electrical
Equipment
Notice: Do not add anything
electrical to the vehicle unless
you check with your dealer first.
Some electrical equipment can
damage the vehicle and the
damage would not be covered
by the vehicle's warranty. Some
add-on electrical equipment can
keep other components from
working as they should.
Add-on equipment can drain the
vehicle's 12‐volt battery, even if the
vehicle is not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see
Servicing the Airbag-Equipped
Vehicle on page 3‑35 andAdding
Equipment to the Airbag-Equipped
Vehicle on page 3‑36.

Black plate (1,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-3
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-6
Engine Cover . . . . . . . . . . . . . . . . 10-8
Engine Oil . . . . . . . . . . . . . . . . . . . 10-8
Engine Oil Life System . . . . . 10-10
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-12
Engine Air Cleaner/Filter . . . . 10-12 Cooling System . . . . . . . . . . . . 10-14
Engine Coolant . . . . . . . . . . . . . 10-14
Engine Overheating . . . . . . . . 10-18
Overheated Engine
Protection
Operating Mode . . . . . . . . . . . 10-20
Power Steering Fluid . . . . . . . 10-21
Washer Fluid . . . . . . . . . . . . . . . 10-22
Brakes . . . . . . . . . . . . . . . . . . . . . 10-22
Brake Fluid . . . . . . . . . . . . . . . . . 10-24
Battery . . . . . . . . . . . . . . . . . . . . . 10-25
All-Wheel Drive . . . . . . . . . . . . . 10-26
Starter Switch Check . . . . . . . 10-26
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-26
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-27
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-27
Wiper Blade Replacement . . . . . . . . . . . . . . 10-28
Windshield Replacement . . . 10-28
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-28
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-29
LED Lighting . . . . . . . . . . . . . . . 10-29
License Plate Lamp . . . . . . . . 10-29
Replacement Bulbs . . . . . . . . . 10-29
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . 10-30
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-30
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-31
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-31
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-34

Black plate (28,1)GMC Acadia/Acadia Denali Owner Manual - 2012
10-28 Vehicle Care
Wiper Blade Replacement
Windshield wiper blades should be
inspected for wear or cracking.
SeeMaintenance Schedule on
page 11‑3 for more information.
Replacement blades come in
different types and are removed in
different ways. To replace the wiper
blade assembly:
1. Pull the windshield wiper arm away from the windshield.
2. Press the button in the middle ofthe wiper arm connector and pull
the wiper blade away from the
arm connector.
3. Install the new wiper blade and make sure the wiper blade locks
into place.
For the proper size and type, see
Maintenance Replacement Parts on
page 11‑13.
Backglass Wiper Blade
To replace the backglass wiper
blade:
1. Pull the wiper blade assembly away from the backglass.
The backglass wiper blade will
not lock in a vertical position so
care should be used when
pulling it away from the vehicle.
2. Rotate the wiper blade assembly, hold the wiper arm in
position, and push the blade
away from the wiper arm.
3. Replace the wiper blade.
4. Return the wiper arm and blade assembly to the rest position on
the glass.
Windshield Replacement
If the vehicle is equipped with the
Head‐Up display (HUD) system and
the windshield needs to be
replaced, get one that is designed
for HUD or the HUD image may
look out of focus.
Headlamp Aiming
Headlamp aim has been preset and
should need no further adjustment.
If the vehicle is damaged in a crash,
the headlamp aim may be affected.
If adjustment to the headlamps is
necessary, see your dealer.

Black plate (30,1)GMC Acadia/Acadia Denali Owner Manual - 2012
10-30 Vehicle Care
Electrical System
High Voltage Devices and
Wiring
{WARNING
Exposure to high voltage can
cause shock, burns, and even
death. The high voltage
components in the vehicle can
only be serviced by technicians
with special training.
High voltage components are
identified by labels. Do not
remove, open, take apart,
or modify these components.
High voltage cable or wiring has
orange covering. Do not probe,
tamper with, cut, or modify high
voltage cable or wiring.
Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed.
This greatly reduces the chance of
circuit overload and fire caused by
electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.

Black plate (33,1)GMC Acadia/Acadia Denali Owner Manual - 2012
Vehicle Care 10-33
FusesUsage
ECM 1 Engine Control
Module 1
EMISSION 1 Emission 1
EMISSION 2 Emission 2
EVEN COILS Even Injector Coils
FAN 1 Cooling Fan 1
FAN 2 Cooling Fan 2
FOG LAMP Fog Lamps
FSCM Fuel System
Control Module
HORN Horn
HTD MIR Heated Outside
Rearview Mirror
HUMIDITY/ MAF Humidity Sensor/
MAF Sensor
HVAC BLWR Heating,
Ventilation, and
Air Conditioning
Blower Fuses
Usage
LT HI BEAM Left High-Beam
Headlamp
LT LO BEAM Left Low‐Beam
Headlamp
LT PRK Left Parking Lamp
LT TRLR
STOP/TRN Trailer Left
Stoplamp and
Turn Signal
ODD COILS Odd Injector Coils
PCM IGN Powertrain Control
Module Ignition
PWR L/GATE Power Liftgate PWR
OUTLET Power Outlet
REAR
CAMERA Rear Vision
Camera
RR APO Rear Accessory
Power Outlet
RR DEFOG Rear Defogger Fuses
Usage
RR HVAC Rear Climate
Control System
RT HI BEAM Right High‐Beam
Headlamp
RT LO BEAM Right Low‐Beam
Headlamp
RT PRK Right
Parking Lamp
RT TRLR
STOP/TRN Trailer Right
Stoplamp and
Turn Signal
RVC SNSR Regulated Voltage
Control Sensor
S/ROOF/
SUNSHADE Sunroof
SERVICE Service Repair SPARE SpareSTOP
LAMPS
(China Only) Stoplamps
(China Only)

Black plate (34,1)GMC Acadia/Acadia Denali Owner Manual - 2012
10-34 Vehicle Care
FusesUsage
STRTR Starter
TCM Transmission
Control Module
TRANS Transmission TRLR
BCK/UP Trailer Back‐up
Lamps
TRLR BRK Trailer Brake TRLR
PRK LAMP Trailer Parking
Lamps
TRLR PWR Trailer Power
WPR/WSW Windshield
Wiper/Washer
Relays Usage
A/C
CMPRSR CLTCH Air Conditioning
Compressor Clutch
AUX
VAC PUMP Auxiliary
Vacuum Pump
CRNK Switched Power Relays
Usage
FAN 1 Cooling Fan 1
FAN 2 Cooling Fan 2
FAN 3 Cooling Fan 3
FOG LAMP Fog Lamps
HI BEAM High‐Beam
Headlamps
HID/LO BEAM High Intensity
Discharge (HID)
Low‐Beam
Headlamps
HORN Horn IGN Ignition Main
LT TRLR
STOP/TRN Trailer Left
Stoplamp and
Turn Signal Lamp
PRK LAMP Parking Lamp
PWR/TRN Powertrain
RR DEFOG Rear Window
Defogger Relays
Usage
RT TRLR
STOP/TRN Trailer Right
Stoplamp and
Turn Signal Lamp
Stop Lamps
(China Only) Stop Lamps
(China Only)
TRLR
BCK/UP Trailer Back-up
Lamps
WPR Windshield Wiper
WPR HI Windshield Wiper
High Speed
Instrument Panel Fuse
Block
The instrument panel fuse block
is located under the instrument
panel on the passenger side of the
vehicle. Pull down on the cover to
access the fuse block.