air conditioning GMC CANYON 2008 Owner's Manual

Mode Buttons
@
(Recirculation):Press this button to turn the
recirculation mode on or off. An indicator light on the
button comes on to show that the recirculation mode is
activated. This mode recirculates air inside the cabin,
and prevents outside air from coming in the vehicle.
It can be used to cool the air inside the vehicle
more quickly.
Recirculation is only available and should only be used in
the bi-level and vent modes. Recirculation is not available
while in heat, oor, oor/defog, or defrost modes. If your
try to select recirculation while in one of those modes, the
indicator light will not come on or ash.
#(Air Conditioning):Press this button to turn the
air conditioning system on or off. An indicator light on
the button comes on to show that the air conditioning
is activated. When the system is on, this setting
cools and dehumidies the air entering the vehicle.
The air conditioning will not function if the fan is
turned off.
You may notice a slight change in engine performance
when the air conditioning compressor shuts off and
turns on again. This is normal. The system is designed
to make adjustments to help with fuel economy while
still maintaining the selected temperature.
The air conditioning system removes moisture from the
air, so a small amount of water might drip underneath
the vehicle while idling or after turning off the engine.
This is normal.
3-21

Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass. This
can be minimized if the climate control system is used
properly. There are two modes to clear fog or frost from
the windshield and side windows. Use the defog mode
to clear the windows of fog or moisture and warm the
passengers. Use the defrost mode to remove fog or frost
from the windshield more quickly. For best results, clear
all snow and ice from the windshield before defrosting.
Turn the mode knob on the climate control panel
clockwise to select the defog or defrost modes.
/(Floor/Defog):This mode directs the air to
the windshield, the side window outlets, and to the
oor outlets. When this mode is selected, the system
runs the air conditioning compressor unless the outside
temperature is near freezing or below. Recirculation
is not available in this mode.
0(Defrost):This mode directs most of the air to
the windshield, and the side window outlets. When this
mode is selected, the system runs the air conditioning
compressor unless the outside temperature is near,
or below freezing. Recirculation is not available in
this mode.
Do not drive the vehicle until all the windows are clear.
Outlet Adjustment
Use the thumbwheel on the outlets to change the
direction of the air ow.
Lift up or push down on the thumbwheel located in
the center of the outlet to direct the air up or down,
or slide the thumbwheel to the left or right to direct
the airow from side-to-side.
Operation Tips

Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may
block the ow of air into your vehicle.
Use of non-GM approved hood deectors may
adversely affect the performance of the system.
Keep the path under the front seats clear of objects
to help circulate the air inside of your vehicle more
effectively.
3-22

DIC Warnings and Messages
Messages are displayed on the DIC to notify the
driver that the status of the vehicle has changed
and that some action may be needed by the driver
to correct the condition. Multiple messages may appear
one after another. The messages are displayed for
several seconds each.
Some messages may not require immediate action, but
you should press and release the trip odometer reset
stem to acknowledge that you received the messages
and to clear them from the display. Each message must
be acknowledged individually.
Some messages cannot be cleared from the DIC
display because they are more urgent. These messages
require action before they can be cleared. You should
take any messages that appear on the display seriously
and remember that clearing the messages only makes
the messages disappear, not correct the problem.
The following are the possible messages that can be
displayed and some information about them.
AC (Air Conditioning) OFF
This message displays when the engine coolant
temperature is too high and the air conditioning in your
vehicle needs to be turned off. SeeEngine Overheating
on page 5-29andClimate Control System on page 3-20
for more information. This message displays along with
the ENG HOT message.
ABS (Antilock Brake System) FAULT
This message displays if there is a problem with the
Antilock Brake System (ABS). Check the ABS as soon as
possible and have your vehicle serviced by your dealer/
retailer. SeeBrakes on page 5-38andAntilock Brake
System Warning Light on page 3-32for more information.
Press and release the reset stem to acknowledge the
message and clear it from the display.
BRAKES
This message displays if there is a problem with the
brakes. Check the brakes as soon as possible and have
your vehicle serviced by your dealer/retailer. SeeBrakes
on page 5-38andBrake System Warning Light on
page 3-31for more information. Press and release the
reset stem to acknowledge the message and clear it from
the display.
CHANGE OIL
This message displays when the oil needs to be
changed. Check the oil in your vehicle as soon as
possible and have your vehicle serviced by your dealer/
retailer. SeeEngine Oil on page 5-15andScheduled
Maintenance on page 6-4for more information. Press
and release the reset stem to acknowledge the message
and clear it from the display.
3-42

Radiator 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.
SeeEngine Compartment Overview on page 5-12for
more information on location.
Engine Overheating
A coolant temperature gage is on the instrument panel.
SeeEngine Coolant Temperature Gage on page 3-33.
The air conditioning might stop working if the engine
is too hot. This is normal and helps cool the engine.
If Steam Is Coming From Your Engine
{CAUTION:
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. Just 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.
If you keep driving when your engine is
overheated, the liquids in it can catch re.
You or others could be badly burned. Stop
your engine if it overheats, and get out of
the vehicle until the engine is cool.
Notice:If your engine catches re because you
keep driving with no coolant, your vehicle can
be badly damaged. The costly repairs would
not be covered by your warranty.
5-29

If No Steam Is Coming From
Your Engine
If you get an engine overheat warning but see or
hear no steam, the problem may not be too serious.
Sometimes the engine can get a little too hot when you:
Climb a long hill on a hot day.
Stop after high-speed driving.
Idle for long periods in traffic.
Tow a trailer. See “Driving on Grades” under
Towing a Trailer on page 4-44.
If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. In heavy traffic, let the engine idle in NEUTRAL
while stopped. If it is safe to do so, pull off the
road, shift to PARK (P) or NEUTRAL and let
the engine idle.
2. Turn off the air conditioning.
3. Turn on your heater to full hot at the highest fan
speed and open the windows as necessary.If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning does not come back on, you can drive
normally.
If the warning continues, pull over, stop, and park your
vehicle right away.
If there is still no sign of steam, idle the engine for
three minutes while you are parked. Push down
the accelerator until the engine speed is about twice
as fast as normal idle speed for at least three minutes
while you are parked. If you still have the warning,
turn off the engine and get everyone out of the vehicle
until it cools down.
You may decide not to lift the hood but to get service
help right away.
5-30

Tire Size
The following illustration shows an example of a
typical passenger vehicle tire size.
(A) P-Metric Tire
:The United States version
of a metric tire sizing system. The letter P as the
rst character in the tire size means a passenger
vehicle tire engineered to standards set by
the U.S. Tire and Rim Association.
(B) Tire Width
:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(C) Aspect Ratio
:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 70,
as shown in item C of the illustration, it would
mean that the tire’s sidewall is 70 percent as
high as it is wide.(D) Construction Code
:A letter code is used
to indicate the type of ply construction in the tire.
The letter R means radial ply construction; the
letter D means diagonal or bias ply construction;
and the letter B means belted-bias ply construction.
(E) Rim Diameter
:Diameter of the wheel
in inches.
(F) Service Description
:These characters
represent the load range and speed rating of
the tire. The load index represents the load
carry capacity a tire is certied to carry. The
load index can range from 1 to 279. The speed
rating is the maximum speed a tire is certied
to carry a load. Speed ratings range from A to Z.
Tire Terminology and Denitions
Air Pressure:The amount of air inside the
tire pressing outward on each square inch of
the tire. Air pressure is expressed in pounds per
square inch (psi) or kilopascal (kPa).
Accessory Weight
:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.
5-59

Fuses Usage
A/CAir Conditioning Control Head,
Power Seats
PWR/SEATPower Seat Circuit Breaker
(If Equipped)
RT HDLP Passenger Side Headlamp
LT HDLP Driver Side Headlamp
AUX PWR 2 Accessory Power 2
FOG/LAMP Fog Lamps (If Equipped)
A/C CMPRSR Air Conditioning Compressor
WSW Wiper/Washer Switch
RVC Regulated Voltage Control
PWR/WNDW Power Windows (If Equipped)
FUEL/PUMP Fuel Pump
STRTR Starter Solenoid Relay
WPR Wiper
ABS 2Antilock Brake System 2
(ABS Pump)Fuses Usage
DR/LCK Power Door Locks (If Equipped)
ETC Electronic Throttle Control (ETC)
02 SNSROxygen Sensors, Air Injection
Reactor (AIR) Relay
CRUISECruise Control Switch, Inside
Rearview Mirror, Transfer Case
Control Module, Brake Switch,
Clutch Disable
HTD/SEAT Heated Seat (If Equipped)
AIRBAGSupplemental Inatable Restraint
System, Sensing and Diagnostic
Module
ABSAntilock Brake System (ABS),
ABS module, Four-Wheel Drive,
Gravity Sensor
BCK/UP Back-up Lights
FRT/AXLE Front Axle Actuator
TRN/HAZRD
REARRear Turn/Hazard Lights
5-113

Fuses Usage
ERLSMass Air Flow (MAF) Sensor,
Can Purge Solenoid, Air Injection
Reactor (AIR) Relay
PCMI Powertrain Control Module (PCM)
TRANS Transmission Solenoid
IGNIgnition, Clutch Starter Switch,
Neutral Safety Back-Up Switch,
Ignition Coils 1-5, Air Conditioning
Relay
INJ Injectors
ABS 1Antilock Brake System 1
(ABS Logic)
FRT PRK
LAMPFront Park/Turn Lamps,
Driver and Passenger Side
Power Window Switches Lighting
REAR PRK
LAMPRear Parking Lamp 1, Passenger
Side Taillamp, License Plate LampsFuses Usage
REAR PRK
LAMP2Driver Side Rear Taillamp,
Passenger Side Airbag Indicator
Lighting, Instrument Panel Dimming
Power (2WD/4WD switch lighting)
CLSTR Cluster
TRN/HAZRD
FRTTurn/Hazard/Courtesy/Cargo
Lamps/Mirrors
TCCM Transfer Case Control Module
HORN Horn
TBC Truck Body Controller
IGN TRNSD Ignition Transducers
RDO Radio
ONSTAR OnStar
®
CNSTR VENT Fuel Canister Vent Solenoid
PCM B Powertrain Control Module (PCM) B
5-114

Relays Usage
DRL Daylight Running Lamps
BEAM SEL Beam Selection
IGN 3 HVACIgnition 3, Climate Control,
Climate Control Head Fuse,
Power Seat Fuse
RAPRetained Accessory Power
(Power Window Fuse,
Wiper/Washer Switch Fuse),
Sunroof Fuse
PRK/LAMPFront Parking Lamp Fuse,
Rear Parking Lamps
HDLP Headlamps
FOG/LAMP Fog Lamps (If Equipped)
FUEL/PUMP Fuel Pump, Fuel Pump Fuse
A/C CMPRSR Air Conditioning CompressorRelays Usage
RUN/CRNKRun/Crank, Airbag System Fuse,
Cruise Control Fuse, Ignition Fuse,
Back-Up Lamps, ABS Fuse,
Front Axle, PCM-1, Injectors Fuse,
Transmission Fuse, ERLS
PWR/TRNPowertrain, Electronic Throttle
Control Fuse, Oxygen Sensor Fuse
HORN Horn
WPR 2 Wiper 2 (High/Low)
WPR Wipers (On/Off)
STRTR Starter Relay (PCM Relay)
Miscellaneous Usage
WPR Diode — Wiper
A/C CLTCH Diode — Air Conditioning, Clutch
MEGA FUSE Mega Fuse
5-115

Capacities and Specications
The following approximate conversion capacities are given in English and metric conversions. SeeRecommended
Fluids and Lubricants on page 6-12for more information.
Capacities and Specications
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134aFor the air conditioning system refrigerant
charge amount, see the refrigerant caution label
located under the hood. See your dealer/retailer
for more information.
Cooling System
2.9L Engine 10.4 qt 9.8 L
3.7L Engine 10.6 qt 10.0 L
5.3L Engine 13.7 qt 13.0 L
Engine Oil with Filter
2.9L Engine 5.0 qt 4.7 L
3.7L and 5.3LEngines 6.0 qt 5.7 L
Fuel Tank 19.5 gal 76 L
5-116