inflation pressure CHEVROLET SUBURBAN 1997 Owners Manual

Loading Your Vehicle
The Certificatiomire label is found on the rear edge of
the driver's door. The
label shows the size of your original tires and the
inflation pressures needed to obtain the gross weight
capacity of your vehicle. This is called the GVWR
(Gross Vehicle Weight Rating). The GVWR includes the
weight
of the vehicle, all occupants, fuel and cargo.
The Certificatioflire label also tells you
the maximum
weights for the front and rear axles, called Gross Axle
Weight Rating (GAWR). To find out the actual loads on
your front and rear axles, you need to go to a weigh
station and weigh your vehicle. Your dealer can help
you with this. Be sure to spread out your load equally on
both sides
of the centerline.
Never exceed the GVWR for your vehicle, or the
GAWR for either the front or rear axle.
And, if
you do have a heavy load, you should spread
it out.
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CAUTION: (Co
0 Underinflated tires pose the same danger as
overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be checked
when your tires are cold.
0 Overinflated tires are more likely to be cut,
punctured or broken by a sudden impact
--
such as when you hit a pothole. Keep tires
at the recommended pressure.
0 Worn, old tires can cause accidents. If your
tread is badly worn, or if your tires have
been damaged, replace them.
Inflation -- Tire Pressure
The Certificatioflire label, which is on the rear edge of
the driver’s door, or on the incomplete vehicle document
in the cab, shows the correct inflation pressures for your tires when they’re cold. “Cold” means your vehicle has
been sitting for at least three hours or driven no more
than
1 mile (1.6 km).
You can operate some vehicles at reduced inflation
pressures only when you’ll be carrying reduced loads.
On those vehicles, the minimum cold inflation pressures
for a typical reduced load are printed on the Improved
Ride Tire Pressure label located
on the driver’s door.
Weigh the vehicle to find the load on each tire and see
the label for the minimum cold inflation pressures for
that load.
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NOTICE:
Don’t let anyone tell you that underinflation or
overinflation is all right. It’s not.
If your tires
don’t have enough air (underinflation), you can
get the following:
Too much flexing
Too much heat
Tire overloading
Bad wear
0 Bad handling
Bad fuel economy.
If your tires have too much air (overinflation),
you can get the following:
Unusual wear
Bad handling
Rough ride
Needless damage from road hazards.
When to Check
Check your tires once a month or more. Also, check the
tire pressure of the spare tire.
How to Check
Use a good quality pocket-type gage to check tire
pressure. You can’t tell
if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they’re underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent
leaks by keeping out dirt and moisture.
Tire Inspection and Rotation
Tires should be rotated every 6,000 to 8,000 miles
(10 000 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. See “When It’s Time for New Tires” and
“Wheel Replacement” later in this section for
more information.
The purpose
of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The first
rotation is the most important. See “Scheduled
Maintenance Services” in the Index for scheduled
rotation intervals.
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FRT
f DO5
When rotating your tires, always use one of the correct
rotation patterns shown here.
After the tires have been rotated, adjust the front and rear
inflation pressures as shown
on the Certificatioflire label.
Make certain that
all wheel nuts are properly tightened.
See “Wheel Nut Torque” in the Index.
I A C. UTION:
Rust or dirt on a wheel, or on the parts to which
it is fastened, can make wheel nuts become loose
after
a 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 you
need to, to get all the rust or dirt
off. (See
“Changing a Flat Tire” in the Index.)
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Part B: Owner Checks and Services
Listed below are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs
are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Part
D.
At Each Fuel Fill
It is important for you or a service station attendant to
pe$orm these underhood checks at each fuel
fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. See “Engine Oil” in the Index for
further details.
Engine Coolant Level Check
Check the engine coolant level and add the proper
coolant mix
if necessary. See “Engine Coolant” in the
Index for further details.
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the
windshield washer tank and add the proper fluid if
necessary. See “Windshield Washer Fluid” in the Index
for further details.
At Least Once a Month
Tire Inflation Check
Make sure tires are inflated to the correct pressures. See
“Tires” in the Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See “Audio Systems” in the Index
for further details.
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Theft ................... ... 2-11
Theft-Deterrent Feature ...... ... ...... 3-26
THEFTLOCK
........................ ... 3-26
Thermostat
............................ ... 6-29
Third Gear, Automatic Transmission
................ 2- 19
Tilt Steering Wheel ............................. 2-33
Time. Setting the
............................... 3- 11
Tire Chains .................................... 6-5 1
TireLoading ................................... 4-42
Tire-Loading Information Label
................... 4-42
Alignment and Balance
........................ 6-50
BuyingNew
................................. 6-48
Chains
..................................... 6-51
Changing
a Flat .............................. 5-22
Cleaning
.................................... 6-59
Tires
......................................... 6-44
Inflation
.................................... 6-45
Inflation Check
............................... 7-43
Inspection and Rotation
............... 1 ........ 6-46
Loading
.................................... 4-42
Pressure
.................................... 6-45
Temperature ................................. 6-50
Traction
.................................... 6-49
Treadwear
................................... 6-49
Uniform Quality Grading
....................... 6-49
Used Wheel Replacement
...................... 6-51
Wear Indicators
.............................. 6-48
Wheel Replacement
........................... 6-50
When It’s Time for New
....................... 6-48
TopStrap
..................................... 1-51
TorqueLock ................................... 2-28 Torque.
Wheel
Nut ......................... 5.33. 6.69
From the Front
................................ 5-9
From the Rear
............................... 5-10
Trailer
...................................... 4-44
Yourvehicle
.................................. 5-8
Brakes
..................................... 4-50
Driving on Grades
............................ 4-52
Driving with
................................. 4-50
Engine Cooling When Towing
.............. 4-45, 4-52
Maintenance When Towing
..................... 4-54
Safety Chains
................................ 4-49
Tongueweight
............................... 4-48
Total Weight on Tires
.......................... 4-49
Towing
..................................... 4-44
Turnsignals
................................. 4-52
Weight
..................................... 4-45
Wiring Harness
............................... 4-54
Transfer Case
.................................. 6-24
Transfer Case, Electronic
......................... 2-23
Transfer Case, Manual
........................... 2-21
Transmission Fluid, Automatic
.................... 6-20
Transmitters, Keyless Entry
........................ 2-6
Transportation, Courtesy
.......................... 8-8
Trip Odometer
................................. 2-63
Turn Signal and Lane Change.Signals
............... 2-34
Turn Signals When Towing
a Trailer ................ 4-52
Towing
Trailer Hitches
..................................... 4-49
Parking
on Hills .............................. 4-53
TTYUsers
..................................... 8-4
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