2009 CHEVROLET TRAIL BLAZER ECU

Look in the following chart to nd the maximum trailer weight for the vehicle.
Vehicle Axle Ratio Max. Trailer Wt. *GCWR
2WD TrailBlazer (4.2 L L6 Engine)3.42 5,400 lbs (2 449 kg) 10,000 lbs (4 536 kg)
3.73 5,900 lbs (2 676 kg) 10,500 lbs (4 763 kg)
4.10 6,400 lbs (2 903 kg) 11,000 lbs (4 990 kg)
4WD TrailBlazer (4.2 L L6 Engine)3.42 5,200 lbs (2 359 kg) 10,000 lbs (4 536 kg)
3.73 5,700 lbs (2 585 kg) 10,500 lbs (4 763 kg)
4.10 6,200 lbs (2 812 kg) 11,000 lbs (4 990 kg)
2WD TrailBlazer (5.3 L V8 Engine)3.42 6,300 lbs (2 858 kg) 11,000 lbs (4 990 kg)
3.73 6,800 lbs (3 084 kg) 11,500 lbs (5 216 kg)
4WD TrailBlazer (5.3 L V8 Engine)3.42 6,100 lbs (2 767 kg) 11,000 lbs (4 990 kg)
3.73 6,600 lbs (2 994 kg) 11,500 lbs (5 216 kg)
**2WD TrailBlazer SS
(6.0 L V8 Engine)4.10 6,800 lbs (3 084 kg) 11,500 lbs (5 216 kg)
**AWD TrailBlazer SS
(6.0 L V8 Engine)4.10 6,600 lbs (2 994 kg) 11,500 lbs (5 216 kg)
*The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and
trailer including any passengers, cargo, equipment and conversion. The GCWR for the vehicle should not be
exceeded.
**TrailBlazer SS models with the 6.0L engine require Performance Sport Package (B4U).
Ask your dealer for our trailering information or advice, or write us at our Customer Assistance Offices. SeeCustomer
Assistance Offices on page 7-6for more information.
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Driving with a Trailer
{CAUTION:
When towing a trailer, exhaust gases may collect
at the rear of the vehicle and enter if the liftgate,
trunk/hatch, or rear-most window is open.
Engine exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can cause
unconsciousness and even death.
To maximize safety when towing a trailer:
Have the exhaust system inspected for leaks
and make necessary repairs before starting
a trip.
Never drive with the liftgate, trunk/hatch, or
rear-most window open.
Fully open the air outlets on or under the
instrument panel.
Adjust the Climate Control system to a setting
that brings in only outside air and set the fan
speed to the highest setting. See Climate
Control System in the Index.
For more information about carbon monoxide, see
Engine Exhaust on page 2-38.Towing a trailer requires a certain amount of experience.
Get to know the rig before setting out for the open road.
Get acquainted with the feel of handling and braking with
the added weight of the trailer. And always keep in mind
that the vehicle you are driving is now longer and not as
responsive as the vehicle is by itself.
Before starting, check all trailer hitch parts and
attachments, safety chains, electrical connectors, lamps,
tires and mirror adjustments. If the trailer has electric
brakes, start the vehicle and trailer moving and then
apply the trailer brake controller by hand to be sure the
brakes are working. This checks the electrical connection
at the same time.
During the trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer brakes
are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead as
you would when driving the vehicle without a trailer. This
can help to avoid situations that require heavy braking
and sudden turns.
Passing
More passing distance is needed when towing a trailer.
Because the rig is longer, it is necessary to go much
farther beyond the passed vehicle before returning to
the lane.
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6. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for the
engine cooling fan.
7. By this time, the coolant level inside the radiator
ller neck may be lower. If the level is lower, add
more of the proper DEX-COOL coolant mixture
through the ller neck until the level reaches
the base of the ller neck.8. Then replace the pressure cap. At any time during
this procedure if coolant begins to ow out of the
ller neck, reinstall the pressure cap. Be sure
the pressure cap is hand-tight and fully seated.
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.
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
information on location.
5-34

Reset the Tire Pressure Monitor System. SeeTire
Pressure Monitor Operation on page 5-69.
Make certain that all wheel nuts are properly
tightened. See “Wheel Nut Torque” under
Capacities and Specifications on page 5-125.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the
vehicle. In an emergency, you can use a cloth
or a paper towel to do this; but be sure to use a
scraper or wire brush later, if needed, to get all
the rust or dirt off. SeeChanging a Flat Tire on
page 5-93.
Make sure the spare tire, if the vehicle has one,
is stored securely. Push, pull, and then try to rotate
or turn the tire. If it moves, tighten the cable.
SeeStoring a Flat or Spare Tire and Tools on
page 5-106.
When It Is Time for New Tires
Various factors, such as maintenance, temperatures,
driving speeds, vehicle loading, and road conditions,
inuence when you need new tires.
One way to tell when it
is time for new tires is to
check the treadwear
indicators, which appear
when your tires have only
1/16 inch (1.6 mm) or less
of tread remaining. Some
commercial truck tires
may not have treadwear
indicators.
5-74

Follow this diagram to store the underbody-mounted at
or spare tire.
A. Wheel Wrench
B. Hoist Shaft
C. Extension
D. Retainer
E. Spare or Flat Tire
(Valve Stem Pointed Up)
1. Put the tire (E) on the ground at the rear of the
vehicle.
2. Remove the hubcap, if the vehicle has one, from
the at tire by tapping the backside of the hubcap
with the wheel wrench (A). Store in a safe location
until the at tire is repaired. Once the tire is repaired,
replace the hubcap.3. Make sure the valve stem is pointed up and to
the rear.
4. Pull the retainer (D) through the wheel.
5. Put the socket end of the extension (C) through the
hole just above the rear bumper at a 45 degree
angle downward. Connect the socket end of
the extension to the hoist shaft (B).
6. Raise the tire fully against the underside of the
vehicle. Continue turning the wheel wrench (A)
clockwise until you hear two clicks or feel it skip
twice. This indicates that the tire is secure and
the cable is tight. The spare tire hoist cannot be
overtightened.
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7. Make sure the tire is stored securely. Push, pull (A),
and then try to turn (B) the tire. If the tire moves,
use the wheel wrench and socket end of the
extension to tighten the cable.
8. Return the equipment to the proper location in the
vehicle as shown next.A. Handle
B. Wheel Wrench
C. Instruction LabelD. Extension(s)
E. Knob
F. Wheel Blocks and Jack
1. Attach the handle (A), wheel wrench (B), and
extension (D) in the slots provided.
2. Roll up the instruction label (C) and return to the
slot in the tool kit.
3. Assemble the wheel blocks (F) to the jack.
4. Turn the knob (E) on the jack clockwise to raise the
jack head.
5. Return the rear seat to its proper position.
5-108

At Each Fuel Fill
It is important to perform these underhood checks at
each fuel fill.
Engine Oil Level Check
Notice:It is important to check the engine oil
regularly and keep it at the proper level. Failure to
keep the engine oil at the proper level can cause
damage to the engine not covered by the vehicle
warranty.
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-18.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOL®
coolant mixture if necessary. SeeEngine Coolant
on page 5-29.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer uid reservoir and add the proper uid if
necessary.
At Least Once a Month
Tire Ination Check
Inspect the vehicle’s tires and make sure they are inated
to the correct pressures. Do not forget to check the spare
tire, if the vehicle has one. SeeInflation - Tire Pressure
on page 5-65. If the vehicle has a spare tire, check to
make sure it is stored securely. SeeChanging a Flat Tire
on page 5-93.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation on
page 5-73.
6-9

Services Provided
Emergency Fuel Delivery:Delivery of enough fuel
for the vehicle to get to the nearest service station.
Lock-Out Service:Service is provided to unlock the
vehicle if you are locked out. A remote unlock may be
available if you have OnStar
®. For security reasons,
the driver must present identication before this
service is given.
Emergency Tow From a Public Road or Highway:
Tow to the nearest Chevrolet dealer for warranty
service, or if the vehicle was in a crash and cannot
be driven. Assistance is also given when the vehicle
is stuck in the sand, mud, or snow.
Flat Tire Change:Service is provided to change a
at tire with the spare tire. The spare tire, if equipped,
must be in good condition and properly inated.
It is the owner’s responsibility for the repair or
replacement of the tire if it is not covered by the
warranty.
Battery Jump Start:Service is provided to jump
start a dead battery.
Trip Interruption Benets and Assistance:
If your trip is interrupted due to a warranty failure,
incidental expenses may be reimbursed during the
5 years/100,000 miles (160 000 km) Powertrain
warranty period. Items considered are hotel, meals,
and rental car.
Services Not Included in Roadside
Assistance
Impound towing caused by violation of any laws.
Legal nes.
Mounting, dismounting or changing of snow tires,
chains, or other traction devices.
Towing or services for vehicles driven on a
non-public road or highway.
7-9