1997 CHEVROLET EXPRESS brake light

Downloaded from www.Manualslib.com manuals search engine If the light stays on, or comes on when you’re driving,
your vehicle needs service. If the regular brake system
warning light isn’t on, you still have brakes, but you
don’t have anti-lock brakes. If the regular brake system
warning light is also on, you don’t have anti-lock brakes
and there’s a problem with your regular brakes. See
“Brake System Warning Light” earlier
in this section.
The anti-lock brake system warning light should come
on briefly when you turn the ignition key to RUN. If the
light doesn’t come on then, have it fixed
so it will be
ready to warn
you if there is a problem.
Daytime Running Lamps Indicator Light
You may have this light on
the instrument panel. It will
light whenever
the DRL are
on.
It is also a reminder to
turn on your headlamps when driving at night. For
more details about DRL, see
“Headlamps and Vehicle
Lighting” in this section.
Malfunction Indicator Lamp (Service
Engine Soon Light) (Gasoline Engine)
Your vehicle is equipped
with
a computer which
monitors operation of the
fuel, ignition and emission
control systems.
SERVICE
ENGINE SOON
This system is called OBD I1 (On-Board
Diagnostics-Second Generation) and is intended
to assure that emissions
are at acceptable levels for
the life of the vehicle, helping to produce a cleaner
environment.
(In Canada, OBD IT is replaced by
Enhanced Diagnostics.) The SERVICE
ENGINE SOON
light comes on to indicate that there is a problem and
service is required. Malfunctions often
will be indicated
by the system before any problem is apparent. This may
prevent more serious damage to
your vehicle. This
system is
also designed to assist your service technician
in correctly diagnosing any malfunction.

Downloaded from www.Manualslib.com manuals search engine Avoid needless heavy braking. Some people drive in
spurts -- heavy acceleration followed by heavy
braking
-- rather than keeping pace with traffic. This is a
mistake. Your brakes may not have time to cool between
hard stops. Your brakes will wear
out much faster if you
do a lot of heavy braking. If you keep pace with the
traffic and allow realistic following distances, you
will
eliminate a lot of unnecessary braking. That means
better braking and longer brake life.
If your engine ever stops while you’re driving, brake
normally but don’t pump your brakes. If you do, the
pedal may get harder
to push down. If your engine
stops, you will still have some power brake assist. But
you will use it when you brake. Once the power assist is
used up, it may take longer to stop and the brake pedal
will be harder to push.
Anti-Lock Brakes (ABS)
Your vehicle has anti-lock brakes (ABS). ABS is an
advanced electronic braking system that will help
prevent a braking skid.
When
you start your engine and begin to drive away,
your anti-lock brake system will check itself. You may
hear a momentary motor or clicking noise while this test
is going on. This is normal.
ANTI -
LOCK
If there’s a problem with the
anti-lock brake system, this
warning light will stay
on.
See “Anti-Lock Brake
System Warning Light” in
the Index.

Downloaded from www.Manualslib.com manuals search engine Driving too fast through large water puddles or even
going through
some car washes can cause problems, too.
The water may affect your brakes. Try to avoid puddles.
But if
you can't, try to slow down before you hit them.
Wet brakes can cause accidents. They won't work
as well in a quick stop and may cause pulling to
one side. You could lose control
of the vehicle.
After driving through a large puddle
of water or
a car wash, apply your brake pedal lightly until
your brakes work normally.

Downloaded from www.Manualslib.com manuals search engine Trailer Wiring Harness
The light-duty trailer wiring harness is a six-wire
harness assembly. The optional heavy-duty trailer
wiring package is an eight-wire harness assembly. The
harness is stored under the vehicle, along the driver’s
side rear corner of the frame rail.
The heavy-duty trailer
wiring harness has a 30-amp feed wire. Both harnesses
come without connectors and should be wired by a
qualified electrical technician. The technician can use
the following color code chart when connecting the
wiring harness to your trailer.
0
0
0
0
0
0
0
0
Dark Blue: Use for electric trailer brakes (eight-wire
harness only)
Orange: Trailer accessory (eight-wire harness only)
Light Green: Back-up lamps
Brown: Parking lamps
Yellow: Left stoplamp and turn signal
Dark Green: Right stoplamp and turn signal
White (heavy gage): Ground wire
White (light gage): Center high-mounted stoplamp
Securely attach the harness to the trailer, then tape or
strap it
to your vehicle’s frame rail. Be sure you leave it
loose enough
so the wiring doesn’t bend or break, but
not
so loose that it drags on the ground. Store the
harness in its original place. Wrap
the harness together
and
tie it neatly so it won’t be damaged.

Downloaded from www.Manualslib.com manuals search engine Some driving conditions or climates may cause a brake
squeal when the brakes are first applied or lightly
applied. This does
not mean something is wrong with
your brakes.
Properly torqued wheel
nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly torque wheel nuts in the
proper sequence to
GM specifications.
Your rear drum brakes don’t have wear indicators, but
if you ever hear a rear brake rubbing noise, have the
rear brake linings inspected. Also, the rear brake drums
should be removed and inspected each time the tires
are removed for rotation or changing. When you have
the front brake pads replaced, have the rear brakes
inspected,
too.
Brake linings should always be replaced as complete
axle sets.
See “Brake System Inspection” in Section
7 of this
manual under Part
C “Periodic Maintenance
Inspections”.
Brake Pedal Travel
See your dealer if the brake pedal does not return to
normal height, or if there is a rapid increase in pedal
travel. This could be
a sign of brake trouble.
Brake Adjustment
Every time you make a brake stop, your disc brakes
adjust for wear.
If your brake pedal goes down farther than normal, your
rear drum brakes may need adjustment. Adjust them by
backing up and firmly applying the brakes a few times.
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.
Your vehicle was designed and tested with top-quality
GM brake parts. 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 approved
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.

Downloaded from www.Manualslib.com manuals search engine Engine Compartment Fuse Relay Center
The fuse block is on the driver’s side of the engine
compartment at the rear.
,
[T)
Name
BLOWR
ABS
Circuits Protected
Blower Motor
Electronic Brake Control Module
Name
IGN-B
IGN-A
BATT
LIGHTING
RR BLOWER
ENG-
1
AIC
SPARE
AUX A
AUX-B
RH-HDLP
Circuits Protected
Ignition Switch
Starter Relay, Ignition Switch
Instrument Panel Fuse Block
Instrument Panel Fuse Block,
Headlamp Switch
Rear Auxiliary Blower
Motor Relays
Heated
02 Sensors, Mass Air
Flow Sensor, EGR Valve
Solenoid, Evap Canister Purge
Valve, Crankshaft Position Sensor,
Secondary Air Injection Relay
(Diesel), Water in Fuel Sensor
(Diesel), Fuel Heater (Diesel),
Glowplug
Relay (Diesel),
Wastegate Solenoid (Diesel)
Air Conditioning Clutch Relay
Spare Fuses
Upfitter Provisions
Upfitter Provisions
Right-hand Headlamp (Export Only)
6-63

Downloaded from www.Manualslib.com manuals search engine Section 9 Index
Adjustable Mast Antenna ........................ 3-28
AirBag
....................................... 1-25
Adding Equipment
............................ 1-32
How Does
it Restrain .......................... 1-30
How it Works
................................ 1-28
Location
.................................... 1-28
Readiness Light
......................... 1.27. 2-51
Servicing
................................... 1-31
What Makes it Inflate
.......................... 1-29
What Will
You See After it Inflates ............... 1-30
When Should it Inflate
......................... 1-29
Aircleaner
.................................... 6-17
Air Conditioning Refrigerants
..................... 6-67
Alignment and Balance. Tire
...................... 6-47
Aluminum Wheels. Cleaning
...................... 6-55
Antenna. Adjustable Mast
........................ 3-28
Antenna. Power
................................ 3-28
Antifreeze
..................................... 6-22
Anti-Lock Brake System Warning Light
................ 2-53. 4-7
Brakes
...................................... 4-7
Appearancecare
............................... 6-49
Air Conditioning
................................ 3-7
Air Control. Climate Control System
................. 3-3 Appearance
Care Materials
....................... 6-57
Arbitration Program
.............................. 8-9
Ashtrays ...................................... 2-43
Audio Systems
.................................. 3-8
Automatic Transmission
Transmission Check
........................... 7-46
Transmission Fluid
............................ 6-18
Transmission Operation
........................ 2-20
Shifting
..................................... 2-20
Transmission Park Mechanism Check
............. 7-48
Axle. Locking Rear
............................. 2-23
Axle. Rear
.................................... 6-22
Battery
...................................... 6-32
Jump Starting
................................. 5-3
Replacement. Remote Keyless Entry
............... 2-8
Warnings
.................................... 5-3
Warnings
.................................... 5-3
BBB Auto Line
................................. 8-9
Before Leaving on a Long Trip
.................... 4-21
Better Business Bureau Mediation
................... 8-9
Blizzard. Driving In
............................. 4-25
9-1

Downloaded from www.Manualslib.com manuals search engine Brake Adjustment
.................................. 6-31
Fluid
....................................... 6-28
Master Cylinder
.............................. 6-28
Parking
..................................... 2-23
Pedal Travel
................................. 6-3 1
Replacing System Parts ........................ 6-3 1
System Warning Light
......................... 2-52
Trailer
...................................... 4-34
Transmission Shift Interlock Check
............... 7-47
Wear
....................................... 6-30
Brakes. Anti-Lock
............................... 4-7
Braking in Emergencies
........................... 4-9
Braking
........................................ 4-6
Break-In. New Vehicle
.......................... 2-16
Brightness Control
.............................. 2-38
Bulb Replacement
.............................. 6-32
BTSICheck
................................... 7-47
Canadian Roadside Assistance
.................... 8-7
Carbon Monoxide .................... 2-28.4-26. 4-34
Cassette Deck Service
........................... 7-45
Cassette Tape Player
....................... 3- 11. 3- 13
Cassette Tape Player Care
........................ 3-27
Center High-Mounted Stoplamp
................... 2-61
Center Rear Passenger Position
.................... 1-35
Certification Label
.............................. 4-27
CertificatiodTire Label
.......................... 4-27
Capacities
and Specifications
...................... 6-64
Center Passenger Position
........................ 1-35 Chains. Safety
................................. 4-34
Chains. Tire
................................... 6-49
Changing a Flat Tire
............................. 5-23
Checking Your Restraint Systems
.................. 1-52
Chemical Paint Spotting
.......................... 6-56
Child Restraints
................................ 1-40
Securing in a Rear Outside Seat Position ........... 1-42
Securing
in the Center Front Seat Position ......... 1-44
Securing
in the Center Rear Seat Position .......... 1-44
Securing in the Center Seat Position
.............. 1-44
Securing in the Passenger Seat Position ........... 1-46
Securing
in the Right Front Seat Position .......... 1-46
TopStrap
................................... 1-42
Where to Put
........................... 1-40. 1-41
Cigarette Lighter
............................... 2-45
Circuit Breakers and Fuses
....................... 6-60
Cleaner. Air
................................... 6-17
Cleaning Aluminum Wheels
..................... ....... 6-55
Fabric
...................................... 6-50
Glass
....................................... 6-53
InsideofYourGM
............................ 6-50
Instrumentpanel
............................. 6-52
Leather
..................................... 6-52
Outside
of Your GM ........................... 6-54
Special Problems
............................. 6-51
Stains
...................................... 6-50
Tires
....................................... 6-55
Vinyl
....................................... 6-52
Wheels
..................................... 6-55
Windshield and Wiper Blades
................... 6-53
9-2