2009 GMC CANYON heater

Engine Coolant
The cooling system in the vehicle is lled with
DEX-COOL®engine coolant. This 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 5-32.
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 6-11for more information.
5-28

If No Steam is Coming from the Engine
Compartment
If an engine overheat warning is displayed but no steam
can be seen or heard, the problem may not be too
serious. Sometimes the engine can get a little too hot
when the vehicle:
Climbs a long hill on a hot day.
Stops after high-speed driving.
Idles for long periods in traffic.
Tows a trailer. See “Driving on Grades” under
Towing a Trailer on page 4-47.
If the overheat warning is displayed with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and
to the highest fan speed. Open the windows as
necessary.
3. In heavy traffic, let the engine idle in N (Neutral)
while stopped. If it is safe to do so, pull off the
road, shift to P (Park) or N (Neutral) and let
the engine idle.If the temperature overheat gage is no longer in the
overheat zone or an overheat warning no longer displays,
the vehicle can be driven. Continue to drive the vehicle
slow for about 10 minutes. Keep a safe vehicle distance
from the car in front of you. If the warning does not come
back on, continue to drive normally.
If the warning continues, pull over, stop, and park the
vehicle right away.
If there is no sign of steam, idle the engine for three
minutes while parked. If the warning is still displayed,
turn off the engine until it cools down.
Engine Fan Noise
This vehicle has a clutched engine cooling fan. When the
clutch is engaged, the fan spins faster to provide more air
to cool the engine. In most everyday driving conditions,
the clutch is not engaged. This improves fuel economy
and reduces fan noise. Under heavy vehicle loading,
trailer towing and/or high outside temperatures, the fan
speed increases when the clutch engages. So you may
hear an increase in fan noise. This is normal and should
not be mistaken as the transmission slipping or making
extra shifts. It is merely the cooling system functioning
properly. The fan will slow down when additional cooling
is not required and the clutch disengages.
You may also hear this fan noise when you start the
engine. It will go away as the fan clutch disengages.
5-33

Electronic Immobilizer
PASS-Key®III+...........................................2-16
Electronic Immobilizer Operation
PASS-Key
®III+...........................................2-16
Engine
Air Cleaner/Filter.........................................5-20
Check and Service Engine Soon Lamp...........3-30
Coolant......................................................5-28
Coolant Heater............................................2-21
Coolant Temperature Gage...........................3-29
Drive Belt Routing.......................................6-15
Engine Compartment Overview......................5-12
Exhaust.....................................................2-35
Fan Noise..................................................5-33
Oil .............................................................5-15
Oil Life System...........................................5-18
Overheating................................................5-32
Starting......................................................2-20
Event Data Recorders.....................................7-17
Exit Lighting...................................................3-16
Extender, Safety Belt.......................................1-34
Exterior Cargo Lamps......................................3-15
Exterior Lamps...............................................3-12
F
Filter
Engine Air Cleaner......................................5-20
Finish Damage.............................................5-106
Fixed Mast Antenna........................................3-61
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-77
Flat Tire, Changing.........................................5-78
Flat Tire, Storing.............................................5-94
Fluid
Automatic Transmission................................5-21
Power Steering...........................................5-34
Windshield Washer......................................5-35
Fog Lamp
Fog ...........................................................3-14
Four-Wheel Drive....................................2-26, 5-44
Front Axle......................................................5-45
Front Turn Signal, Parking and
Daytime Running Lamps...............................5-49
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Driving for Better Economy............................. 4-2
5

Fuel (cont.)
Filling a Portable Fuel Container....................5-10
Filling the Tank............................................. 5-8
Fuels in Foreign Countries.............................. 5-7
Gage .........................................................3-34
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-6
Fuses
Engine Compartment Fuse Block.................5-109
Fuses and Circuit Breakers.........................5-109
Windshield Wiper.......................................5-109
G
Gage
Engine Coolant Temperature.........................3-29
Fuel..........................................................3-34
Speedometer..............................................3-22
Tachometer.................................................3-22
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-6
Glove Box.....................................................2-44
GM Mobility Reimbursement Program.................. 7-7
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-8
Headlamp
Aiming .......................................................5-47
Headlamps....................................................5-48
Bulb Replacement.......................................5-47
Daytime Running Lamp................................3-13
Exterior Lamps............................................3-12
Flash-to-Pass............................................... 3-8
Halogen Bulbs............................................5-47
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-13
Heated Seats................................................... 1-4
Heater...........................................................3-18
Engine Coolant...........................................2-21
Highbeam On Light.........................................3-33
High-Speed Operation, Tires.............................5-62
Highway Hypnosis...........................................4-27
Hill and Mountain Roads..................................4-28
Hood
Checking Things Under................................5-10
Release.....................................................5-11
6