GMC 1976 TRANSMODE Operating Manual page 65

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Tire Traction
A
decrease
in
driving,
cornering,
and
braking traction occurs when water, snow,
ice, gravel,
or other
material is on
the
road surface. Driving practices and vehicle
speed
should
be
adjusted
to
the
road
conditions.
When driving on wet or slushy
roads,
it
is possible for a wedge of water to build
up between the tire and road surface. This
phenomenon, known as hydroplaning, may
cause
partial or complete loss of traction,
which adversely affects vehicle control and
stopping ability. To reduce the possibility
of traction loss, the following precautions
should be observed:
1.
Slow
down
during
rain-storms
or
when roads are slushy.
2. Slow down if road has standing water
or puddles,
3.
Replace
tires
when
tread
wear
indicators are visible.
4. Keep tires properly inflated.
Snow Tires
If the vehicle is expected
to
encounter
muddy or snowy driving conditions it is
recommended that front driving wheels be
equipped
with mud and snow type tires.
If you equip your vehicle with mud and
snow tires, they should be of the same
size,
load
range,
and
construction
as
original
equipment tires.
It is recommended
that
vehicle
speeds
be
limited
to
a
maximum of 75
mph if
mud and snow
tires are installed.
Tire Wear and Rotation
Uneven or abnormal tire wear is usually
the
result
of incorrect inflation pressure,
improper
wheel
alignment,
wheels
being
out-of-balance,
or
poor
driving
habits.
Under-inflation, over-inflation, incorrect toe
or
camber
and
fast
cornering
produce
different types of abnormal wear which can
be diagnosed by your dealer.
63
TREAD
STILL GOOD
,_
TREAD
WORN OUT
~
Tire
Tread Wear
Indicator
To equalize wear it is
recommended
that
the
tires be rotated every 6,000 miles (or
sooner
if
irregular wear develops) as shown.
NOTE:
It
is
recommended
that
disc
brake pads be inspected for wear whenever
tires are rotated.
The original equipment tires incorporate
built-in tread wear indicators to assist you
in determining when your tires have worn
to the point of needing replacement. These
indicators appear
as
1
/2-inch
wide bands
when
tire
tread depth is
1
/
16-inch or less.
When
the indicators appear in two or more
adjacent grooves,
tire replacement due
to
tread wear is recommended.
SIX
WHEEL PATIERN
SEVEN
WHEEL
PATIERN
Tire Rotation Diagram

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