2005 GMC CANYON ECU

Tire Inspection and Rotation
Tires should be rotated every 5,000 to 8,000 miles
(8 000 to 13 000 km).
Any time you notice unusual wear, rotate your tires as
soon as possible and check wheel alignment. Also
check for damaged tires or wheels. SeeWhen It Is Time
for New Tires on page 5-63andWheel Replacement
on page 5-66for more information.
Make sure the spare tire is stored securely. Push, pull,
and then try to rotate or turn the tire. If it moves,
use the wheel wrench to tighten the cable. See
Changing a Flat Tire on page 5-70.
The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The rst rotation
is the most important, seeScheduled Maintenance on
page 6-4.When rotating your tires, always use one of the correct
rotation patterns shown here.
If your vehicle has a compact spare tire or a spare tire
that does not match your vehicle’s road tires and
wheels, in size and type, do not include the spare in the
tire rotation.
5-62

Tire Chains
{CAUTION:
If your vehicle has P225/75R15 or P265/75R15
size tires, do not use tire chains. They can
damage your vehicle because there is not
enough clearance. Tire chains used on a
vehicle without the proper amount of clearance
can cause damage to the brakes, suspension
or other vehicle parts. The area damaged by
the tire chains could cause you to lose control
of your vehicle and you or others may be
injured in a crash.
Use another type of traction device only if its
manufacturer recommends it for use on your
vehicle and tire size combination and road
conditions. Follow that manufacturer’s
instructions. To help avoid damage to your
vehicle, drive slowly, readjust or remove the
device if it is contacting your vehicle, and do
not spin your wheels.
If you do nd traction devices that will t,
install them on the rear tires.Notice:If your vehicle has a tire size other than
P225/75R15 or P265/75R15 use tire chains only
where legal and only when you must. Use chains
that are the proper size for your tires. Install them on
the tires of the rear axle. Do not use chains on the
tires of the front axle. Tighten them as tightly as
possible with the ends securely fastened. Drive
slowly and follow the chain manufacturer’s
instructions. If you can hear the chains contacting
your vehicle, stop and retighten them. If the contact
continues, slow down until it stops. Driving too
fast or spinning the wheels with chains on will
damage your vehicle.
5-68

2. Turn the wing nut on the cover counterclockwise to
remove it.
For crew cab models, reach under the rear seat to
access the jack and wheel blocks. To reinstall the
jack and wheel block assembly in the mounting
bracket, insert the tabs into the jack base by pushing
the blocks up into the assembly. The outer hole in the
jack base aligns with the tab on the bracket.
When reinstalling, make sure the jack is secure,
but do not overtighten the jack in the bracket.
3. Remove the wheel blocks and the wheel block
retainer by turning the wing nut counterclockwise.
4. Put the wheel blocks at the front and rear of the tire
farthest away from the one being changed.
That would be the tire on the other side, at the
opposite end of the vehicle.
5. Locate the wing nut used to retain the storage bag
and tools which is under the front passenger’s seat.
Remove it by turning the wing nut counterclockwise.You will use the jack handle extensions and the wheel
wrench to remove the underbody-mounted spare tire.
A. Jack Handle
Extensions
B. Bottle JackC. Extension Tool
D. Wheel Wrench
E. Wheel Blocks
1. Assemble the wheel wrench (D) and the jack
handle extensions (A) as shown.
5-72

If the at tire is on the rear, position the jack under
the rear axle and get as close as possible to the
shock absorber.
4. Make sure the jack head is positioned so that the
rear axle is resting securely between the grooves
that are on the jack head.5. Turn the wheel wrench clockwise to raise the
vehicle. Raise the vehicle far enough off the ground
so there is enough room for the spare tire to t
under the wheel well.
6. Remove all the wheel
nuts and take off the
at tire.
Rear Position
5-77

4. Repeat this procedure at least two times. If the
spare tire lowers to the ground, continue with
Step 5 underRemoving the Spare Tire and Tools
on page 5-71.
5. Turn the wrench counterclockwise until
approximately 6 inches (15 cm) of cable is exposed.
6. Stand the wheel blocks
on their shortest ends,
with the backs
facing each other.
7. Place the bottom edge of the jack on the wheel
blocks, separating them so that the jack is
balanced securely.8. Attach the jack handle, extension, and wheel
wrench to the jack and place it (with the wheel
blocks) under the vehicle towards the front of the
rear bumper. Position the center lift point of the jack
under the wheel.
9. Turn the wrench clockwise to raise the jack until it
lifts the tire.
10. Continue raising the jack until the tire stops moving
upward and is held rmly in place, the secondary
latch has released and the tire is balancing on
the jack.
5-82

4. Insert the hoist end through the hole in the rear
bumper and into the funnel-shaped guide.
5. Turn the wheel wrench clockwise to raise the
tire part way up. Make sure the retainer is
seated in the wheel opening and the valve stem
is pointed down.
6. Raise the tire fully against the underside of the
vehicle by turning the wheel wrench clockwise
until you feel it skip twice. You cannot overtighten
the cable.7. Make sure the tire is stored securely. Push, pull (A),
and then try to turn (B) the tire. If the tire moves,
check to make sure the tire valve stem is pointing
down, then use the wheel wrench to loosen
and then tighten the cable.
5-86

To store the tools, do the following:
1. Return the wheel wrench, jack extensions and the
storage bag to the locations described under
Removing the Spare Tire and Tools on page 5-71.
2. Reinstall the jack and wheel blocks, be sure
to install the wheel blocks rst.
3. Secure the items in the vehicle as shown next.
A. Bottle Jack
B. Wheel Blocks
C. Wing NutA. Bottle Jack
B. Wheel Blocks
C. Wing Nut
Crew Cab
Regular/Extended Cab
5-87

Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench dealer can assist you
with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-13.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-13for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary.
SeeEngine Coolant on page 5-25for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank and add the proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your tires and make sure tires are
inated to the correct pressures. Do not forget to check
your spare tire. SeeTires on page 5-54for further
details. Check to make sure the spare tire is stored
securely. Push, pull and then try to turn the spare tire.
If it moves, tighten it. SeeChanging a Flat Tire on
page 5-70.
6-9