2009 GMC ACADIA heating

Basic Trailer Wiring
The trailer wiring harness, with a
seven-pin connector, is located
at the rear of the vehicle and is
tied to the vehicle’s frame.
The harness connector can be
plugged into a seven-pin universal
heavy-duty trailer connector
available through your
dealer/retailer.
The seven-wire harness contains
the following trailer circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn
Signal
Brown: Taillamps
Black: Ground
Light Green: Back-up Lamps
Red/Black: Battery Feed
Dark Blue: Trailer Brake*
*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/retailer or a qualied
service center.
If the back-up lamp circuit is not
functional, contact your
dealer/retailer.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.
Engine Cooling When Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. SeeEngine Overheating
on page 5-21.
Driving Your Vehicle 4-33

Service and
Appearance Care
Service
Service...............................5-3
Accessories and
Modications.....................5-3
California Proposition 65
Warning............................5-3
California Perchlorate
Materials Requirements.....5-3
Doing Your Own
Service Work....................5-4
Adding Equipment to the
Outside of the Vehicle......5-4
Fuel
Fuel....................................5-5
Gasoline Octane.................5-5
Gasoline Specications.......5-5
California Fuel....................5-5
Additives.............................5-5
Fuels in Foreign
Countries..........................5-6
Filling the Tank...................5-7
Filling a Portable Fuel
Container..........................5-8
Checking Things
Under the Hood
Checking Things Under
the Hood..........................5-9
Hood Release.....................5-9
Engine Compartment
Overview.........................5-10
Engine Oil.........................5-11
Engine Oil Life System.....5-13
Engine Air Cleaner/Filter. . .5-15
Automatic Transmission
Fluid................................5-16
Cooling System.................5-16
Engine Coolant.................5-17
Engine Overheating...........5-21
Overheated Engine
Protection
Operating Mode
...............5-23
Power Steering Fluid.........5-23
Windshield Washer Fluid. . .5-24
Brakes..............................5-25
Battery..............................5-28
Jump Starting...................5-28
All-Wheel Drive
All-Wheel Drive.................5-33
Headlamp Aiming
Headlamp Aiming..............5-33
Bulb Replacement
Bulb Replacement.............5-33
Halogen Bulbs..................5-33
License Plate Lamp..........5-34
Replacement Bulbs...........5-34
Windshield Wiper
Blade Replacement
Windshield Wiper Blade
Replacement...................5-34
Tires
Tires.................................5-35
Tire Sidewall Labeling.......5-36
Tire Terminology and
Denitions.......................5-38
Ination - Tire Pressure. . . .5-41
Tire Pressure Monitor
System............................5-42
Tire Pressure Monitor
Operation........................5-44
Tire Inspection and
Rotation..........................5-47
Service and Appearance Care 5-1

Notice:Using coolant other
than DEX-COOL®can cause
premature engine, heater core,
or radiator corrosion. In addition,
the engine coolant could require
changing sooner, at 30,000 miles
(50 000 km) or 24 months,
whichever occurs rst. Any
repairs would not be covered by
the vehicle warranty. Always use
DEX-COOL
®(silicate-free) coolant
in the vehicle.
Engine Coolant
The cooling system in the vehicle
is lled with DEX-COOL®engine
coolant. The coolant is designed to
remain in the vehicle for ve years
or 150,000 miles (240 000 km),
whichever occurs rst.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
seeEngine Overheating on
page 5-21.
What to Use
{CAUTION
Adding only plain water to the
cooling system can be dangerous.
Plain water, or some other liquid
such as alcohol, can boil before
the proper coolant mixture will.
The vehicle’s coolant warning
system is set for the proper
coolant mixture. With plain water
or the wrong mixture, the engine
could get too hot but you would
not get the overheat warning. The
engine could catch re and you or
others could be burned. Use a
50/50 mixture of clean, drinkable
water and DEX-COOL
®coolant.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
Gives freezing protection down to
−34°F (−37°C), outside
temperature.
Gives boiling protection up to
265°F (129°C), engine
temperature.
Protects against rust and
corrosion.
Will not damage aluminum parts.
Helps keep the proper engine
temperature.
Notice:If an improper coolant
mixture is used, the engine could
overheat and be badly damaged.
The repair cost would not be
covered by the vehicle warranty.
Too much water in the mixture
can freeze and crack the engine,
radiator, heater core, and other
parts.
Notice:If extra inhibitors
and/or additives are used in the
vehicle’s cooling system, the
vehicle could be damaged.
Use only the proper mixture
of the engine coolant listed in this
manual for the cooling system.
SeeRecommended Fluids
and Lubricants on page 6-12
for more information.
Service and Appearance Care 5-17

9. If the coolant level inside the
radiator ller neck is low, add
more of the proper DEX-COOL
coolant mixture through the
ller neck until the level is back
up to the base of the ller
neck. Replace the pressure cap.
Be sure to secure it tightly.
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 gage on the instrument
panel cluster. SeeEngine Coolant
Temperature Gage on page 3-40.The vehicle may also display
an ENGINE OVERHEATED
IDLE ENGINE and ENGINE
OVERHEATED STOP ENGINE
message in the Driver Information
Center (DIC). SeeDIC Warnings
and Messages on page 3-56.
You may decide not to lift the hood
when this warning appears, but
instead get service help right away.
SeeRoadside Assistance Program
on page 7-6.
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 re
while driving with no coolant, the
vehicle can be badly damaged.
The costly repairs would not be
covered by the vehicle warranty.
SeeOverheated Engine Protection
Operating Mode on page 5-23for
information on driving to a safe
place in an emergency.
Service and Appearance Care 5-21

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 6-14.
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.
Tires
Your new vehicle comes with
high-quality tires made by a
leading tire manufacturer.
If you ever have questions about
your tire warranty and where to
obtain service, see your vehicle
Warranty booklet for details.
For additional information refer
to the tire manufacturer.
{CAUTION
Poorly maintained and
improperly used tires are
dangerous.
Overloading your
vehicle’s tires can cause
overheating as a result
of too much exing. You
could have an air-out and
a serious accident. See
Loading the Vehicle on
page 4-16.
(Continued)
CAUTION (Continued)
Underinated tires pose
the same danger as
overloaded tires. The
resulting accident could
cause serious injury.
Check all tires frequently to
maintain the recommended
pressure. Tire pressure
should be checked when
your vehicle’s tires are
cold. SeeInflation - Tire
Pressure on page 5-41.
Overinated tires are more
likely to be cut, punctured,
or broken by a sudden
impact — such as when
you hit a pothole. Keep
tires at the recommended
pressure.
Worn, old tires can cause
accidents. If the tire’s tread
is badly worn, or if your
vehicle’s tires have been
damaged, replace them.
Service and Appearance Care 5-35

Fuses Usage
AIRBAG Airbag
AMP Amplier
Fuses Usage
BCK/UP/
STOPBack-up
Lamp/Stoplamp
BCMBody Control
Module
CNSTR/
VENTCanister Vent
CTSY Courtesy
DR/LCK Door Locks
DRLDaytime Running
Lamps
DSPLY Display
FRT/WSWFront Windshield
Washer
HTD/COOL
SEATHeated/Cooling
Seats
HVACHeating, Ventilation
and Air Conditioning
IADV/
PWR/LEDInadvertent
Power LED
INFOTMNT InfotainmentFuses Usage
LT/TRN/SIGDriver Side Turn
Signal
MSMMemory Seat
Module
PWR
MODEPower Mode
PWR/MIR Power Mirrors
RDO Radio
REAR WPR Rear Wiper
RT/TRN/SIGPassenger Side
Turn Signal
SPARE Spare
SPARE Spare
STR/WHL/
ILLUMSteering Wheel
Illumination
Fuse Side
Service and Appearance Care 5-91

Fuses Usage
HVAC
BLWRHeating, Ventilation
and Air Conditioning
Blower
LT HI
BEAMLeft High-Beam
Headlamp
LT LO
BEAMLeft Low-Beam
Headlamp
LT PRK Left Parking Lamp
LT TRLR
STOP/TRNTrailer Left
Stoplamp and Turn
Signal
ODD
COILSOdd Injector Coils
PCM IGNPowertrain Control
Module Ignition
PWR
L/GATEPower Liftgate
PWR
OUTLETPower OutletFuses Usage
REAR
CAMERARear Camera
RR APORear Accessory
Power Outlet
RR DEFOG Rear Defogger
RR HVACRear Climate
Control System
RT HI
BEAMRight High-Beam
Headlamp
RT LO
BEAMRight Low-Beam
Headlamp
RT PRK Right Parking Lamp
RT TRLR
STOP/TRNTrailer Right
Stoplamp and
Turn Signal
RVC SNSRRegulated Voltage
Control Sensor
S/ROOF/
SUNSHADESunroofFuses Usage
SPARE Spare
Stop Lamps
(China
Only)Stop Lamps
(China Only)
STRTR Starter
TCMTransmission
Control Module
TRANS Transmission
TRLR
BCK/UPTrailer Back-up
Lamps
TRLR BRK Trailer Brake
TRLR PRK
LAMPTrailer Parking
Lamps
TRLR PWR Trailer Power
WPR/WSWWindshield
Wiper/Washer
5-94 Service and Appearance Care

Cleaning
Aluminum or
Chrome-Plated Wheels . . . 5-86
Exterior Lamps/Lenses......5-85
Fabric/Carpet...................5-83
Finish Care......................5-85
Instrument Panel, Vinyl,
and Other Plastic
Surfaces......................5-84
Interior............................5-81
Leather...........................5-83
Tires...............................5-87
Underbody Maintenance....5-88
Washing Your Vehicle........5-84
Weatherstrips...................5-84
Windshield, Backglass,
and Wiper Blades..........5-86
Climate Control System.........3-22
Dual Automatic.................3-25
Outlet Adjustment.............3-30
Rear Air Conditioning and
Heating System.............3-31
Rear Air Conditioning and
Heating System,
Electronic.....................3-32
Clock, Setting......................3-73
Collision Damage Repair.......7-10
Compact Spare Tire.............5-81
Compass............................3-54Compressor Kit
Storing............................5-68
Compressor Kit,
Tire Sealant.....................5-56
Content Theft-Deterrent.........2-16
Control of a Vehicle............... 4-3
Convenience Net.................2-52
Coolant
Engine............................5-17
Engine
Temperature Gage.........3-40
Engine Temperature
Warning Light...............3-40
Cooled Seats........................ 1-6
Cooling System...................5-16
Courtesy Lamps
...................3-14
Cruise Control....................... 3-9
Cruise Control Light..............3-44
Cupholders.........................2-49
Customer Assistance
Information
Courtesy Transportation....... 7-9
Customer Assistance for
Text Telephone (TTY)
Users............................ 7-4
Customer Assistance
Offices........................... 7-5
Customer Satisfaction
Procedure...................... 7-1Customer Assistance Information
(cont.)
GM Mobility Reimbursement
Program........................ 7-5
Reporting Safety Defects
to General Motors.........7-14
Reporting Safety Defects
to the Canadian
Government..................7-14
Reporting Safety Defects
to the United States
Government..................7-14
Roadside Assistance
Program........................ 7-6
Service Publications
Ordering Information......7-15
D
Daytime Running Lamps/
Automatic Headlamp
System...........................3-13
Defensive Driving................... 4-2
Delayed Entry Lighting..........3-15
Delayed Exit Lighting............3-15
Delayed Headlamps.............3-12
Delayed Locking.................... 2-8
DIC Compass......................3-54
Disc, MP3...................3-89, 3-93
INDEX i-3