1993 GMC SIERRA flat tire

- Inflation pressures should never exceed 10 psi (70 kPa) above the
inflation specified for the maximum load of the tire.
If you have 19.5 inch radial tires on your vehicle, and:
- You’ll be driving for very long at speeds of 66 mph (105 km/h) to 70
mph (110 km/h) where legal, inflate tires- to 5 psi (35 kPa) more than
the recommended cold inflation pressures and reduce axle load
capacity by 4%.
- You’ll be driving for very long at speeds of 71 mph (1 15 km/h) to 75
mph (120 kmlh) where legal, cold inflation pressures should be
increased by
5 psi (35 kPa) and you must also reduce axle load
capacity by
12% Do not drive over 75 mph (120 kmh) even if it’s
legal.
inflation specified for the maximum load of the tire.
- Inflation pressures should never exceed 20 psi (140 kPa) above the
For special operating conditions, such as carrying a slide-in c\
amper,
increase recommended cold tire pressures
by 10 psi (70 kPa).
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Service & Appearance Cam
Tire lnspecfion and Rotation
To make your tires last longer, have them inspected and rotated at the
mileages recommended in the Maintenance Schedule. See “Scheduled
Maintenance Services” in the Index.
Q
-
-
K2655
Use this rotation pattern.
If your vehicle has front tires with different load ratings or tread designs (such
as all season
vs. onloff road) than the rear tires, don’t rotate your tires \
front
to rear.
After the tires have been rotated, adjust the front and rear \
inflation pressure
as shown on the CertificationRire label. Make certain that all wheel nuts are
properly tightened. See “Wheel Nut Torque”
in the Index.
A Rust or dirt on a wheel, or on the parts to which -it is fastened, can
make the wheel nuts become loose after a time. The wh.eel 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 paper towel to do this; but
3 be sure to use a scraper or wire brush later, if you need- to, to get
-T all the rust or dirf off. See “Changing a Flat Tire” in the Index.
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r CAUTION I
If you operate your vehicle with a tire that is badly underinflated, the
tire can overheat. An overheated tire can lose air suddenly or catcl.
fire. You or others could be injured. Be sure all tires (including the
spare,
if any) are properly inflated.
Buying New Tires
To find out what kind and size of tires you need, look at the Certificationflire
label. The tires installed on your vehicle when it was new had a Tire
Performance Criteria Specification (TPC Spec) number on each tire’s sidewall.
When you get new tires, get ones with that same TPC Spec num\
ber. That
way, your vehicle will continue to have tires that are designed to give proper
endurance, handling, speed rating, traction, ride and other thin\
gs during
normal service on your vehicle. If your tires have an all-season tread design,
the TPC number will be followed by a
“MS” (for mud and snow).
If you ever replace your tires with those not having a TPC Spec number,
make sure they are the same size, load range, speed rating and construction
type (bias, bias-belted
or radial) as your original tires.
1 CAUTION
* Mixing tires could cause you to lose control while driving. If you mix
vehicle may not handle properly, and you could have a crash. Be
- ) tires of different sizes or types (radial and bias-belted tires), the
I sure to use the same size and type tires on all wheels. I
Uniform Tire Qua/ity Grading
The following information relates to the system developed by the United
States National Highway Traffic Safety Administration which grade\
s tires by
treadwear, traction and temperature performance. (This applies o\
nly to
vehicles sold in the United States.)
Treadwear
The treadwear grade is a comparative rating based on the wear rate of the
tire when tested under controlled conditions on a specified governmen\
t test
course. For example, a tire graded
150 would wear one and a half (1 1/2)
times as well on the government course as a tire graded 100. The relative
performance
of tires depends upon the actual conditions of their use,
however, and may depart significantly from the norm due to var\
iations in
driving habits, service practices and differences in road characteristics and
climate.
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Service & Appearance Care
Traction-A, B, C
The traction grades, from highest to lowest are: A, B, and C. They represent
the tire’s ability to stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt and concrete.
A
tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking
(straight-ahead) traction tests and does not include cornering \
(turning) traction.
Temperature-A, B, C
The temperature grades are A (the highest), B, and C, representing the tire’s
resistance
to the generation of heat and its ability to dissipate heat when
tested under controlled conditions on a specified indoor laborat\
ory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire
failure. The grade
C corresponds to a level ‘of performance which all
passenger car tires must meet under the Federal Motor Vehicle \
Safety
Standard
No. 109. Grades B and A represent higher levels of performance on
the laboratory test wheel than the minimum required by law.
Warning: The temperature grade for this tire is established for a tire that is
properly inflated and not overloaded. Excessive speed, underinfla\
tion, or
excessive loading, either separately or in combination, can caus\
e heat buildup
and possible tire failure.
These grades are molded on the sidewalls of passenger car tire\
s. While the tires available as standard or optional equipment on \
General Motors
vehicles may vary with respect to these grades, all such tires meet General
Motors performance standards and have been approved for use on \
General
Motors vehicles.
All passenger type (P Metric) tires must conform to Federal
safety requirements in addition to these grades.
Wheel AIignment and Tire Balance
The wheels on your vehicle were aligned and balanced carefully \
at the
factory to give you the longest tire
life and best overall performance.
In
most cases, you will not need to have your wheels aligned again.
However,
if you notice unusual tire wear or your vehicle pulling one way \
or
the other, the alignment may need to be reset. If you notice your vehicle
vibrating when driving on a smooth road, your wheels may need to be
rebalanced.
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A Word About Maintenance
We at General Motors want to help you keep your vehicle in good working
condition. But we don’t know exactly how you’ll drive it. You may drive very
short distances only a few times a week. Or you may drive long distances all
the time in very hot, dusty weather. You may use your vehicle in making
deliveries. Or you may drive it
to work, to do errands, or in many other ways.
Because of all the different ways people use their GM vehicles, maintenance
needs vary. You may even need more frequent checks and replacements than
you will find in the schedules in this section.
So please read this section and
note how you drive.
If you have any questions on how to keep your vehicle
in good condition, see your GM dealer, the place many GM owners choose
to have their maintenance work done. Your dealer can be relied upon to use
proper parts and practices.
Your Vehicle and the Environment
Proper vehicle maintenance not only helps keep your vehicle in good working
condition, but also helps the environment. All recommended maintenance
procedures are important. Improper vehicle maintenance or the removal of
important components can significantly affect the quality of the air we breathe.
Improper fluid levels or even the wrong tire inflation can inc\
rease the level of
emissions from your vehicle. To help protect our environment, and to help
keep your vehicle in
good condition, please maintain your vehicle properly.
Recording Maintenance Services
The Maintenance Record near the end of this section provides a place for
you
to record the maintenance performed on your vehicle. Whenever any
maintenance is performed, be sure
to write it down in the Maintenance
Record. This will help you determine when your next maintenance should be
done, In addition, it is a good idea to keep your maintenance receipts. They
may be needed to qualify your vehicle for warranty repairs.
CAUTION
+ CAUTION: Performing maintenance work on a vehicle can be
dangerous. In trying
to do some jobs, you can be seriously injured.
Do your own maintenance work only if you have the required
know-how and the proper tools and equipment for the job.
If you
have any doubt. have
a aualified technician do the work.
If you are skilled enough to do some work on your vehicle, you will probably
want to get the service information GM publishes. You will
find a list of
publications and how to get them in the back of Section
8, “Customer
Assistance Information.” See “Service Publications’’ in the Index.
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Scheduled Maintenance Sewices
When the wheels are removed for rotation, inspect disc brake pads f\
or wear
and rotors for surface condition.
Also inspect drum brake linings for wear and
cracks. Inspect other brake parts, including drums, wheel cylind\
ers, parking
brake, etc., at the same time. Remove any rust
or dirt from the wheel and
mounting surfaces before mounting the wheel.
Inspect brakes more often if driving habits or conditions resull In
frequent braking.
Owner Checks and Services
Listed below are owner checks and services which should be mad\
e at the
time period specified
to help ensure proper safety, emission performance, and
dependability 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 this Section.
At Least Once a Month
Tire inflation pressure check -Check the tires for proper inflation. If they
are low, inflate them
to the level specified on the certification label or on the
tire inflation charts. See “Loading Your Vehicle’’ or “Inflation-Tire Pressure” in
the Index.
At Least Once a Year
Key lock cylinder lubrication -Lubricate key lock cylinders with engine oil.
See the “Recommended Fluid and Lubricants’’ chart in this section.
Transmission neutral or clutch start switch operation
CAUTION
~
1. Before you start, be sure you have enough room around the veh\
icle.
2. Firmly apply both the manual parking brake and the regular brake. See
“Brakes” and “Parking Brake” in the Index.
Do not use the accelerator
pedal.
3. Be ready to turn off the engine immediately if it starts.
4. On automatic transmission vehicles, try to start the engine in each gear.
The starter should work only in
P (Park) or N (Neutral).
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C
Camper Wiring Harness .............. 2-91
Capacities/Specification Charts .. 6-95
Cassette Tape Player
Catalytic Converter
...................... 6-65
Certificationnire Label
................. 6-67
Changing
A Flat Tire ........ 5.17. 5-23
Chemical Paint Spotting
.............. 6-90
Child Restraints
Cigarette Lighter/Ashtrays
........... 2-62
Circuit Breakers (See “Fuses”)
Cleaning (See
“Audio Systems”)
(See “Safety Belts”)
Finish Care
................................ 6-88
Glass
.......................................... 6-87
Inside of Vehicle
....................... 6-85
Instrument Panel. Top
............. 6-87
Outside of Vehicle
.................... 6-88
Special Problems
...................... 6-86
Vinyl
or Leather ........................ 6-87
Wheels and Tires
..................... 6-89
Windshield
................................ 6-88
Clock
................................... 3-1 2. 3-1 5
Computer Command Control
System
..................................... 6-66
Conversion to Chassis Cab
........ 6-72
Coolant (See “Engine”)
Cooling System
............................ 5-1 1
Capacity
.................................... 6-96
Crankcase Capacity
...................... 6-96
Cruise Control
............................... 2-47
Increase Speed
......................... 2.50
On Hills ...................................... 2-51
Passing
...................................... 2-51
Resume
..................................... 2-49
Set
.............................................. 2-48
To Get Out Of
.......................... 2-52
Cup Holder
.................................... 2-65
Customer Assistance for the
Customer Satisfaction Procedure.8-2 Reduce Speed
.......................... 2-51
Hearing
or Speech Impaired .... 8-3
D
Daytime Running Lights
(Canada Only)
.................... 2.55. 2-84
Indicator Light
............... 2.55. 2-84
Diesel Fuel (See “Fuel”)
Dome Lights
................................. 2-56
Doors
............................................... 2-5
Driving Locks
............................................ 2-6
Across an Incline
..................... 4-33
After Off-Road Driving
............ 4-36
At Night
.......................... 4.36. 4-38
Backing Up
............................... 4-59
Defensive
................................... 4-10
Downhill
..................................... 4-31
Freeway
..................................... 4-43
High Beams
.............................. 4-37
Highway Hypnosis
................... 4-46
Hydroplaning
............................. 4-39
In Blizzard
................................. 4-54
In City
....................................... 4-42
In Fog. Mist and Haze
. 4.41 . 4-42
In Rain
............................ 4.38. 4-40
In Sand. Mud. Ice.
Or Snow .................................. 4-34
In Water
.................................... 4-35
Long Distance
.......................... 4-45
Loss of Control
........................ 4-24
Night Vision
.............................. 4-37
Off-Roading
............................... 4-25
On Curves
................................. 4-20
On Grades
................................. 4-60
On Hill and Mountain Roads
. 4-47
On Off-Road Hills
.................... 4-28
On Snow
or Ice .. 2.15. 4.52. 4-55
Passing
............................ 4.22. 4-59
Skidding
..................................... 4-24
Stuck in Deep Snow
..... 4.54. 5-33
Through Water
.............. 2.15. 4-35
Uphill
.......................................... 4-29
Winter
........................................ 4-52
With a Trailer
............................ 4-55
Drunken Driving
........................... 4-11
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INDEX
H
Halogen Bulbs .............................. 6-55
Hazard Warning Flashers
.............. 5-2
Head Restraints
.............................. 1-5
Headlights .......................... 2.53. 6-55
Composite
.................................. 6-56
Halogen
..................................... 6-55
High-Low Beam
........................ 2-44
Reminder
................................... 2-54
Sealed Beam
............................. 6-55
Heating System (with NC)
........... 3-5
Rear Window Defogger
............. 3-8
System Controls
......................... 3-6
Fan Knob
..................................... 3-4
Function Lever
............................ 3-4
Temperature Lever
...................... 3-4
Hitches
........................................... 4-58
Hood Checking Under
........................ 6-17
Latches and Hinge
................... 6-53
Release
...................................... 6-1 7
Horn
............................................... 2-41
Hydraulic Clutch
........................... 6-37
Grease Fitting
............................ 6-39
Hydro-Boost System (Hydraulic Pump)
..................... 6-50
Hydroplaning
................................. 4-39
I
If You’re Stuck In Sand. Mud.
Ice or Snow
.............................. 5-33
Ignition Switch
.............................. 2-1 0
Inflation-Tire Pressure ................. 6-73
Instrument Panel
............... 2-70. 2-76
Diesel Tach Cluster .................. 2-75
Standard Cluster
............ 2-72, 2-73
J
High Beam Indicator Light ...... 2-85
Heating System (without AIC)
..... 3-4
Rear Window Defogger
............. 3-8
Highway Hypnosis
........................ 4-46 Jack Storage
...................... 5.19.
5-31
Jump Starting
................................ 5-3
K
Key Release Lever ....................... 2-11
Keys
................................................. 2-3
L
Lights ............................................. 2-53
Brake System Warning
............ 4-18
Bulb Replacement
......... .6-54, 6-98
Cargo Lamp
.................... 2-58, 6-61
Charging System Light
........... 2-82
Check Gages Light
.................. 2-84
Dome Lights
............................. 2-56
Fender
........................................ 6-59
Fog Lamps
................................ 2-54
Glow Plugs Light
........... 2-16, 2-81
Front ParkinglTurn Signal
........ 6-57
Indicator
..................................... 2-78
Headlights (See “Headlights”-)
Low Coolant Warning
.............. 2-81
Malfunction Indicator
.... 2-83, 6-66
Operation
................................... 2-43
Reading
..................................... 2-57
Service Fuel Filter
.................... 2-80
Side Marker
.............................. 6-58
Rear
................................. 6-62, 6-63
Replacement Chart
.................. 6-98
Roof Marker
.............................. 6-60
Tailgate Marker
......................... 6-60
Underhood Reel Lamp
............ 2-58
Loading Your Vehicle
........ 4-26, 6-67
Truck-Camper
............................ 6-70
Lubrication
..................................... 6-52
Accelerator Control System
.... 6-52
Body ........................................... 6-53
Constant Velocity Joints
......... 6-53
Front Axle
................................. 6-40
Front Shock Absorbers
........... 6-51
Front Suspension and Steering Linkage
................... 6-51
Service Engine Soon
..... 2-83, 6-66
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