2011 GMC ACADIA cooling

Black plate (18,1)GMC Acadia/Acadia Denali Owner Manual - 2011
10-18 Vehicle Care
How to Add Coolant to the
Radiator
{WARNING
An electric engine cooling fan
under the hood can start up
even when the engine is not
running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan.
{WARNING
Steam and scalding liquids
from a hot cooling system can
blow out and burn you badly.
They are under pressure, and if
you turn the surge tank pressure
cap—even a little —they can
come out at high speed. Never
turn the cap when the cooling
system, including the surge tank
(Continued)
WARNING (Continued)
pressure cap, is hot. Wait for the
cooling system and surge tank
pressure cap to cool if you ever
have to turn the pressure cap.
If coolant is needed, add the proper
mixture directly to the radiator, but
be sure the cooling system is cool
before this is done.
1. Detach fasteners and lift off the panel that covers the
radiator cap.
2. Remove the radiator pressure
cap when the cooling system,
including the upper radiator
hose, is no longer hot.
Turn the pressure cap slowly
counterclockwise about one
full turn.
If a hiss is heard, wait for that
to stop. A hiss means there is
still some pressure left in the
system.
3. Keep turning the pressure cap slowly and remove it.
4. Fill the radiator to the base of the filler neck with the proper
DEX-COOL coolant mixture.

Black plate (19,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Vehicle Care 10-19
5. Fill the coolant recovery tank tothe FULL COLD mark.
6. Reinstall the cap on the coolant recovery tank but leave the
radiator pressure cap off.
7. Start the engine and let it run until the upper radiator hose
feels warm. Any time during
this procedure, watch out for
the engine cooling fans. 8. If the coolant level inside the
radiator filler neck is low, add
more of the proper DEX-COOL
coolant mixture through the filler
neck until the level is back up to
the base of the filler neck.
9. Replace the pressure cap. Be sure to secure it tightly.
At any time during this
procedure if coolant begins
to flow out of the filler neck,
reinstall the pressure cap.
Notice: If the pressure cap is not
tightly installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Engine Overheating
The vehicle has several indicators
to warn of engine overheating.
There is an engine coolant
temperature gauge on the
instrument panel cluster.
See Engine Coolant Temperature
Gauge on page 5‑14.
The vehicle may also display
an ENGINE OVERHEATED
IDLE ENGINE and ENGINE
OVERHEATED STOP ENGINE
message in the Driver Information
Center (DIC). See Engine Cooling
System Messages on page 5‑39.
You may decide not to lift the hood
when this warning appears, but
instead get service help right away.
See Roadside Assistance Program
(U.S. and Canada) on page 13‑8
or Roadside Assistance Program
(Mexico) on page 13‑10.

Black plate (20,1)GMC Acadia/Acadia Denali Owner Manual - 2011
10-20 Vehicle Care
If you do decide to lift the hood,
make sure the vehicle is parked
on a level surface.
Then check to see if the engine
cooling fans are running. If the
engine is overheating, both fans
should be running. If they are not,
do not continue to run the engine
and have the vehicle serviced.
Notice:Engine damage from
running the engine without
coolant is not covered by the
warranty.
Notice: If the engine catches fire
while driving with no coolant, the
vehicle can be badly damaged.
The costly repairs would not be
covered by the vehicle warranty.
See Overheated Engine
Protection Operating Mode on
page 10‑22 for information on
driving to a safe place in an
emergency.If Steam Is Coming from the
Engine Compartment
{WARNING
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or
hear steam coming from it.
Turn it off and get everyone
away from the vehicle until it
cools down. Wait until there is
no sign of steam or coolant
before you open the hood.
(Continued)
WARNING (Continued)
If you keep driving when the
vehicles engine is overheated,
the liquids in it can catch fire.
You or others could be badly
burned. Stop the engine if it
overheats, and get out of the
vehicle until the engine is cool.
SeeOverheated Engine
Protection Operating Mode on
page 10‑22 for information on
driving to a safe place in an
emergency.

Black plate (34,1)GMC Acadia/Acadia Denali Owner Manual - 2011
10-34 Vehicle Care
FusesUsage
AFS Adaptive Forward
Lighting System
AIRBAG Airbag System
AUX POWER Auxiliary Power AUX
VAC PUMP Auxiliary
Vacuum Pump
AWD All-Wheel-Drive
System
BATT 1 Battery 1
BATT 2 Battery 2
BATT 3 Battery 3
CIGAR
LIGHTER Cigar Lighter
ECM Engine Control
Module
ECM 1 Engine Control
Module 1
EMISSION 1 Emission 1
EMISSION 2 Emission 2
EVEN COILS Even Injector Coils Fuses
Usage
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
HVAC BLWR Heating,
Ventilation and
Air Conditioning
Blower
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 Fuses
Usage
PCM IGN Powertrain Control
Module Ignition
PWR L/GATE Power Liftgate PWR
OUTLET Power Outlet
REAR
CAMERA Rear Camera
RR APO Rear Accessory
Power Outlet
RR DEFOG Rear Defogger
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

Black plate (35,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Vehicle Care 10-35
FusesUsage
RVC SNSR Regulated Voltage
Control Sensor
S/ROOF/
SUNSHADE Sunroof
SERVICE Service Repair SPARE Spare
Stop Lamps
(China Only) Stop Lamps
(China Only)
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 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 Relays
Usage
PRK LAMP Park Lamp PWR/TRN Powertrain
RR DEFOG Rear Window
Defogger
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.

Black plate (36,1)GMC Acadia/Acadia Denali Owner Manual - 2011
10-36 Vehicle Care
Fuse Side
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. Fuses Usage
AIRBAG Airbag AMP Amplifier
BCK/
UP/STOP Back‐up
Lamp/Stoplamp
BCM Body Control
Module
CNSTR/ VENT Canister Vent
CTSY Courtesy
DR/LCK Door Locks
DRL Daytime Running
Lamps
DRL 2 GMC HID Only
(If Equipped)/
Rear Fog
Lamps-China Only
DSPLY Display
FRT/WSW Front Windshield
Washer
HTD/
COOL SEAT Heated/
Cooling Seats Fuses Usage
HVAC Heating,
Ventilation and
Air Conditioning
INADV/
PWR/LED Inadvertent
Power LED
INFOTMNT Infotainment
LT/TRN/SIG Driver Side Turn
Signal
MSM Memory Seat
Module
PDM Power Mirrors,
Liftgate Release
PWR MODE Power Mode
PWR/MIR Power Mirrors RDO Radio
REAR WPR Rear Wiper
RT/TRN/SIG Passenger Side
Turn Signal
SPARE Spare
STR/WHL/ ILLUM Steering Wheel
Illumination

Black plate (59,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Vehicle Care 10-59
Wheel Alignment and Tire
Balance
The tires and wheels were
aligned and balanced at the
factory to provide the longest tire
life and best overall performance.
Adjustments to wheel alignment and
tire balancing will not be necessary
on a regular basis. However, check
the alignment if there is unusual tire
wear or if the vehicle is pulling to
one side or the other. If the vehicle
vibrates when driving on a smooth
road, the tires and wheels might
need to be rebalanced. See your
dealer for proper diagnosis.
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or
corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and
wheel nuts should be replaced.
If the wheel leaks air, replace it.
Some aluminum wheels can be
repaired. See your dealer if any
of these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have
the same load-carrying capacity,
diameter, width, offset, and be
mounted the same way as the
one it replaces.
Replace wheels, wheel bolts,
wheel nuts, or Tire Pressure Monitor
System (TPMS) sensors with new
GM original equipment parts.{WARNING
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling
of the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Notice: The wrong wheel can
also cause problems with
bearing life, brake cooling,
speedometer or odometer
calibration, headlamp aim,
bumper height, vehicle ground
clearance, and tire or tire chain
clearance to the body and
chassis.
See If a Tire Goes Flat on
page 10‑61 for more information.

Black plate (3,1)GMC Acadia/Acadia Denali Owner Manual - 2011
Service and Maintenance 11-3
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 miles since
the last service. Reset the oil life
system whenever the oil is changed.
SeeEngine Oil Life System on
page 10‑11.
Every Engine Oil Change
.Change engine oil and
filter. Reset oil life system.
See Engine Oil on page 10‑8
and Engine Oil Life System on
page 10‑11. An Emission Control
Service.
.Engine coolant level check.
See Engine Coolant on
page 10‑15.
.Engine cooling system
inspection. Visual inspection
of hoses, pipes, fittings, and
clamps and replacement,
if needed.
.Windshield washer fluid level
check. See Washer Fluid on
page 10‑23.
.Windshield wiper blade
inspection for wear, cracking,
or contamination and
windshield and wiper blade
cleaning, if contaminated. See
Exterior Care on page 10‑90.
Worn or damaged wiper blade
replacement. See Wiper Blade
Replacement on page 10‑29.
.Tire inflation pressures
check. See Tire Pressure on
page 10‑45.
.Tire wear inspection. See Tire
Inspection on page 10‑51.
.Rotate tires if necessary.
See Tire Rotation on
page 10‑52.
.Fluids visual leak check
(or every 12 months, whichever
occurs first). A leak in any
system must be repaired and
the fluid level checked.
.Engine air cleaner filter
inspection. See Engine Air
Cleaner/Filter on page 10‑13.
.Brake system inspection
(or every 12 months, whichever
occurs first).
.Steering and suspension
inspection. Visual inspection
for damaged, loose, or missing
parts or signs of wear.