1993 CHEVROLET SUBURBAN brakes

Yiiur Driving and the Road
mailer Wiring Harness
Power Winches
See “Trailer Wiring Harness” in the Index.
If you wish to use a power winch on your vehicle, only use it when your
vehicle
is stationary or anchored.
transmission may be damaged.
Use the regular brakes, set the parking brake or block the wh\
eels to keep
your vehicle from rolling.
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Service & Appearance Care
Brake Master Cylinder
Your brake master cylinder is here. It is filled with DOT-3 brake fluid.
P
K2470
There are only two reasons why the brake fluid level in your master cylinder
might go down. The first is that the brake fluid goes down to an acceptable
level during normal brake lining wear. When new linings are put in, the fluid
level goes back up. The other reason is that fluid is leaking out of the brake
system.
If it is, you should have your brake system fixed, since a leak means
that sooner or later your brakes won’t work well, or won’\
t work at all.
So, it
isn’t a good idea to “top
off your brake fluid. Adding brake fluid won’t correct
a leak.
If you add fluid when your linings are worn, then you’ll have \
too
much fluid when you get new brake linings. You should add (or remove)
brake fluid, as necessary only when work is done on the brake hydraulic
system.
.
4 If you---have too much brake fluid, it can spill on the engine. The fluid
will burnhhe engine is hot enough. You or others could be burned,
and your vehicle could be damaged. Add brake fluid only when \
work
is done on the brake hydraulic system.
Refer to the Maintenance Schedule to determine when to check your brake
fluid. See “Periodic Maintenance” in the Index,
To Check Brake Fluid:
You can check the brake fluid without taking off the cap. Just look at the
windows on the brake fluid reservoir. The fluid levels should \
be above the
MIN
mark. If they aren’t, have your brake system checked to see if there is a leak.
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After work is done on the brake hydraulic system, make sure t\
he levels are
above
MIN and below the top of each window.
What To Add:
When you do need brake fluid, use only DOT-3 brake fluid-such \
as Delco
Supreme 11
@ (GM Part No. 1052535). Use new brake fluid from a sealed
container only.
NOTICE
DOT-5 silicone brake fluid can damage your vehicle. Don’t use it.
Don’t let someone put in the wrong kind of fluid. For example, just a
few drops
of mineral-based oil, such as engine oil, in your brake
-]stem can damaae brake svstem parts
so badlv that 1 fll have to
be replaced.
Brake fluid can damage paint, so be careful nor IO spit1 Drake fluid on
your vehicle.
Hydro-Boost Brake System (Hydraulic Pump)
The power steering pump is also used as the Hydro-boost pump. \
Refer to “Power Steering System” in this section when checking flui\
d level
or adding fluid.
Replacing Brake System Parts
The braking system on a modern vehicle is complex. Its many parts have to
be of top quality and work well together
if the vehicle is to have really good
braking. Vehicles we design and test have top-quality
GM brake parts in
them, as your vehicle does when
it is new. When you replace parts of your
braking system-for example, when your brake linings wear down and you
have to have new ones put in-be sure you get new genuine
GM
replacement parts. If you don’t, your brakes may no longer work properly. For
example,
if someone puts in brake linings that are wrong for your vehicle, the
balance between your front and rear brakes can change, for the\
worse. The
braking performance you’ve come to expect can change in many other ways
if someone puts in the wrong replacement brake parts.
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Scheduled Maintenance Services
When the wheels are removed for rotation, inspect disc brake p\
ads for 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 result in
frequent braking.
Owner Checks and Services
Listed below are owner checks and services which should be made at the
time period specified to help ensure proper safety, emission pe\
rformance, 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
4 When you are doing this check, the vehicle could move suddenly. If
it does, you or others could be injured. Follow the steps below. I
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 bra\
ke. 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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Section
A
Accelerator Control System ........ 6-35
Air Cleaner
.................................... 6-1 6
Air Conditioning
................... 3.5. 6-69
Rear (Wagon Models)
................ 3-8
Refrigerant Capacity
................. 6-69
System Controls
......................... 3-6
Antenna. Fixed Mast
................... 3-21
Antilock Brakes (See “Brakes”)
System Warning Light
............. 2-70
Appearance Care
.......................... 6-57
Materials
.................................... 6-64
Arbitration Program
........................ 8-3
Audio Systems
............................. 3-1 2
AM Radio
................................... 3-1 3
AM-FM Stereo Audio System
with Cassette Deck
.............. 3-14
AM-FM Stereo Audio System
with Cassette Deck and Equalizer
.............. 3-1 7. 3-1 9
Cassette Deck ............................... 3-1 6
Cassette Tape Player Care
.......... 3-21
Automatic Transmission
............... 2-1 7
FI uid
............................................ 6. 1 7
Axle
Front
................................ 2.32. 6-24
Rear
............................................ 6-24
Rear Locking
............................. 2-22
B
Battery ........................................... 6-37
Belts (See “Safety Belts”)
Better Business Bureau Mediation
..................................... 8-3
Blizzard
.......................................... 4-55
Brakes
Adjustment
................................. 4-18
Antilock
...................................... 4-15
Antilock Warning Light
............ 2-70
Fluid
........................................... 6-32
Four-wheel Antilock
................. 4-16
Hydro-Boost System
(Hydraulic Pump)
................. 6-33
Master Cylinder
........................ 6-32
Parking
....................................... 2-23
Pedal Travel
.............................. 4-18
Rear Drum Brakes
................... 4-18
Replacing Parts
........................ 6-33
System Warning Light .2-69, 4-17
Trailer
......................................... 4-60
Wear Indicators
........................ 4-17
Braking
.......................................... 4-13
In Emergencies
........................ 4-18
Break-In, New Vehicle
................ 2-11
Bulb Replacement ....................... 6-37
Replacement Chart
.................. 6-72
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M
Maintenance Other Items
............................... 6-34
Periodic Inspections
................. 7-24
Record
............................... 7.3. 7-27
Scheduled Maintenance
.. 7.4. 7-1 8
Underbody
................................ 6-62
When Towing a Trailer
............. 4-63
Master Cylinder (See “Brakes”)
Mirrors
........................................... 2-51
Convex Outside
........................ 2-52
Electric Outside
........................ 2-52
Inside
.......................................... 2-51
Model Reference
............................... III
Multifunction Lever ...................... 2-36
...
Turn SignalLane
Change Indicator
........... 2-37, 2-75
0
Odometer ....................................... 2-66
Off-Road Driving (See “Driving”)
Off-Road Recovery
..................... 4-20
Oil ..................................................... 6-9
Additives
................................... 6-1 5
Disposal of Used ...................... 6-1 6
Pressure Gage
.......................... 2-78
To Check
................................... 6-1 0
What Kind to Use .................... 6-12
When
to Add ............................ 6-10
When
to Change ...................... 6-1 5
Owner Checks and Services ...... 7-22
Parking On Hills
...................................... 4.49
Over Things That Burn
............ 2-27
Torque Lock (Automatic
Transmission)
............. 2.24. 4-52
Your Vehicle (Manual Transmission)
........................ 2-26
Parking Brake
............................... 2-23
Passing
Other Vehicles .... 4.21. 4-61
Pavement Markings
........................ 4-8
Periodic Maintenance
Power Inspections
................................ 7-24
Door Locks
.................................. 2-7
Steering
..................................... 4-18
Steering Fluid
........................... 6-29
Winches
..................................... 4-64
Product Service Publications
....... 8-6
R
Radiator Pressure Cap ................ 6-28
Radio (See “Audio Systems”)
Rear Window Defogger
.............. 3-11
Recommended Fluids And Lubricants
......................... 7-25
Recovery Hooks
........................... 5-32
Replacement Parts
...................... 6-68
Reporting Safety Defects
............. 8-4
Road Signs
..................................... 4-2
Roadside Assistance
..................... 8-5
Rocking Your Vehicle
.................. 5-32
S
Safety Belts .................................. 1-13
Center Passenger
........... 1-27, 1-29
Cleaning
..................................... 6-60
Checking Restraint System
.... 1-47
Child Restraints
........................ 1-36
Children
...................................... 1-34
Driver Position
.......................... 1-20
Extender
.................................... 1-46
Lap Shoulder
............................ 1-21
Larger Children
......................... 1-44
Proper Wear
............................. 1-20
Questions and Answers
.......... 1-18
Rear Seat
.................................. 1-30
Replacing After a Crash
......... 1-47
Right Front Passenger
............ 1-27
Small Children and Babies
..... 1-34
Use During Pregnancy
............ 1-26
Why They Work ....................... 1-15
Adults
......................................... 1-20
Reminder Light
......................... 1-19
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Safety Chains ............................... 4-60
Scheduled Maintenance
Seats Safety Warnings and Symbols
..... 0-2
Services
............................ 7-4, 7-1 8
Controls
........................................ 1-2
Easy Entry Seat
.......................... 1 -6
Manual Front
............................... 1 -2
Power Driver‘s
............................ 1-3
Rear Folding
................................ 1-8
Reclining
..................................... 1-3
Removable
................................. 1-1 1
Seatback Latches
....................... 1-5
(AIR) System
............................ 6-45
Do-It-Yourself
............................... 6-3
Parts Identification Label
......... 6-67
Publications
........................ 8-6, 8-8
Replacement Parts and Filter Recommendations
.................. 6-69
Service Engine
Soon Light ......... 2-72
Service Station Checks
............... 7-28
Shift Indicator Light
.......... 2-22, 2-74
Shifting Into Park
......................... 2-24
Single Belt Accessory Drive
....... 6-34
Spare Tire
..................................... 5-1 8
Removal ..................................... 5-20
Storage ....................................... 5-30
Specification Charts ..................... 6-68
Speedometer
................................. 2-66
Starting Your Engine
................... 2-1 4
Column Shift Lever
.................. 2-25
In Emergencies
......................... 4-1 9
Tips ............................................. 4-1 8
Storage Compartments ................ 2-55
Other
.......................................... 2-6 1
Sun Visors .................................... 2-53
Secondary
Air Injection
Service
Steering
......................................... 4-18
T
Tachometer ................................... 2-67
Tailgate
............................................ 2-7
Electric Glass Release ............. 2-34
Theft
.............................................. 2-10
Thermostat
.................................... 6-28
Tilt Wheel
..................................... 2-35
Tires
............................................... 6-48
Balancing
................................... 6-55
Chains
........................................ 6-56
Changing a Flat
............. 5-16, 5-20
Flat
............................................. 5-16
Hub CapsNVheel Nut Caps
.... 5-22
Inspection and Rotation
.......... 6-52
Loading
...................................... 6-46
New ............................................
Pressure ..................................... 6-49
Spare (See “Spare Tire”)
Uniform Tire Quality Grading
. 6-54
Torque Lock
........................ 2-24, 4-52
Towing
A Trailer ..................................... 4-56
Backing Up
............................... 4-61
Following Distance
................... 4-61
Hitches
....................................... 4-59
Maintenance
.............................. 4-63
Towing Your Vehicle
...................... 5-7
Traffic Lights
................................... 4-7
Trailer Brakes
.............................. 4-60
Towing
........................................ 4-56
Wiring Harness
......................... 2-82
Trailering Package
........................ 6-47
Transfer Case
..................... 2-30, 6-23
Transmission Automatic
.................................. 2-17
Five-Speed Manual
.................. 2-20
Fluid ................................. 6-1 7, 6-20
Fluid, To Add
.................. 6-1 9. 6-21
Fluid.
To Check .............. 6-18. 6-20
6-53
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