service indicator GMC SAVANA 1997 Owners Manual

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
SERVICE control systems.
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
I1 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.
2-54
ProCarManuals.com

Care of Your Cassette Tape Player
A tape player that is not cleaned regularly can cause
reduced sound quality, ruined cassettes
or a damaged
mechanism. Cassette tapes should be stored in their
cases away from contaminants, direct sunlight and
extreme heat. If they aren’t, they may not operate
properly or may cause failure
of the tape player.
Your tape player should be cleaned regularly after every
50 hours of use. Your radio may display CLN to indicate
that you have used your tape player for
50 hours without
resetting the tape clean timer.
If this message appears
on the display, your cassette tape player needs to be
cleaned. It will still play tapes, but
you should clean it
as soon as possible
to prevent damage to your tapes and
player.
If you notice a reduction in sound quality, try a
known good cassette to see if it is the tape or the tape
player at fault.
If this other cassette has no improvement
in sound quality, clean the tape player.
Cleaning may be done with a scrubbing action,
non-abrasive cleaning cassette with pads which scrub
the tape head as the hubs of the cleaner cassette turn. It
is normal for the cassette to eject while cleaning. Insert
the cassette at least three times to ensure thorough
cleaning. A scrubbing action cleaning cassette is
available through your
GM dealership. You
may also choose
a non-scrubbing action, wet-type
cleaner which uses a cassette with
a fabric belt to clean
the tape head. This type of cleaning cassette will not
eject and, it may not clean as thoroughly
as the
scrubbing type cleaner.
After
you clean the player, press and hold EJECT for
five seconds to reset the
CLN indicator. The radio
will display
--- to show the indicator was reset.
Cassettes are subject to wear and the sound quality
may degrade over time. Always make sure the cassette
tape is in good condition before you have your tape
player serviced.
Care of Your Compact Discs
Handle discs carefully. Store them in their original cases
or other protective cases and away from direct sunlight
and dust. If the surface of
a disc is soiled, dampen a
clean, soft cloth in a mild, neutral detergent solution
and clean it, wiping from the center to the edge.
Be sure never to touch the signal surface when handling
discs. Pick up discs by grasping the outer edges or the
edge
of the hole and the outer edge.
3-27
ProCarManuals.com

Adding Equipment to the Outside of
Your Vehicle
Things you might add to the outside of your vehicle can
affect the airflow around it. This may cause wind noise
and affect windshield washer performance. Check with
your GM dealer before adding equipment to the outside
of your vehicle.
Fuel (Gasoline Engine)
If your vehicle has a diesel engine, see “Diesel Fuel
Requirements and Fuel System” in the Diesel Engine
Supplement. For vehicles with gasoline engines, please
read this.
Use regular unleaded gasoline rated at 87 octane or
higher. At a minimum, it should meet specifications
ASTM D4814 in the United States and CGSB 3.5-M93
in Canada. Improved gasoline specifications have been
developed by the American Automobile Manufacturers
Association (AAMA) for better vehicle performance
and engine protection. Gasolines meeting
the AAMA
specification could provide improved driveability and
emission control system protection compared to
other gasolines. Be
sure the posted octane is
at least 87. If the octane is
less than 87, you may get a heavy knocking noise when
you drive. If it’s bad enough, it can damage your engine.
If you’re using fuel rated at 87 octane or higher and you
hear heavy knocking, your engine needs service. But
don’t worry if you hear a little pinging noise when
you’re accelerating or driving up a hill. That’s normal,
and you don’t have to buy a higher octane fuel to get rid
of pinging. It’s the heavy, constant knock that means
you have a problem.
If your vehicle is certified to meet California Emission
Standards (indicated on the underhood tune-up label),
it is designed to operate on fuels that meet California
specifications. If such fuels are not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
specifications, but emission control system performance
may be affected. The malfunction indicator lamp on
your instrument panel may turn on and/or your vehicle
may fail a smog-check test. If this occurs, return to your
authorized GM dealer for diagnosis to determine the
cause
of failure. In the event it is determined that the
cause of the condition is the type of fuels used, repairs
may not be covered by your warranty.
6-3
ProCarManuals.com

Some gasolines that are not reformulated for low
emissions contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT);
ask your service station operator whether or not
his fuel
contains MMT. General Motors does not recommend the
use
of such gasolines. If fuels containing MMT are used,
spark plug life may be reduced and your emission
control system performance may be affected. The
malfunction indicator lamp on your instrument panel
may turn
on. If this occurs, return to your authorized
GM dealer for service.
To provide cleaner air, all gasolines in the United States
are
now required to contain additives that will help
prevent deposits from forming
in your engine and fuel
system, allowing your emission control system
to
function properly. Therefore, you should not have to aad
anything to the fuel. In addition, gasolines containing
oxygenates, such
as ethers and ethanol, and reformulated gasolines may be
available in your area to
help clean the air. General Motors recommends that you
use these gasolines if they comply with the
specifications described earlier.
NOTICE:
Your vehicle was not designed for fuel that
contains methanol. Don’t use it. It can corrode
metal parts in your fuel system and also damage
plastic and rubber parts. That damage wouldn’t
be covered under your warranty.
6-4
ProCarManuals.com

NOTICE:
0
0
Using the wrong fluid can badly damage
brake system parts.
For example, just a few
drops of mineral-based oil, such as engine
oil, in your brake system can damage brake
system parts
so badly that they’ll have to be
replaced. Don’t let someone put in the
wrong kind of fluid.
If’ you spill brake fluid on your vehicle’s
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on your vehicle.
If you do, wash it off
immediately. See “Appearance Care” in
the Index.
Brake Wear
Your vehicle has front disc brakes and rear drum brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the brake
pads are
worn and new pads are needed. The sound may
come and go or be heard all the time your vehicle is
moving (except when you are pushing on the brake
pedal firmly).
,
I
The brake wear warning sound means that soon
your brakes won’t work well. That could lead to
an accident. When you hear the brake wear
I
warning sound, have your vehicle serviced. I
I I
I NOTICE:
Continuing to drive with worn-out brake pads
could result in costly brake repair.
6-30
ProCarManuals.com

LAMP OR BULB INTERIOR
Dome Lamps
Reading Lamps
IP Courtesy Lamp
Stepwell Lamp
Instrument Panel Compartment Lamp
Ashtray Lamp
Sunshade Vanity Mirror
LAMP OR BULB
INSTRUMENT PANEL
Daytime Running Lamps Indicator
Charging System Indicator Lamp
Instrument Cluster Illumination
Headlamp Beam Indicator
Turn Signal Indicator
Brake Warning Indicator
SIR (Air Bag)
Safety Belt Warning
Check Gages Indicator
Malfunction Indicator (“Service Engine Soon”) Lamp
TRADE NO.
211-2
211-2
194
194
194 194 74
TRADE NO.
74 74
194 74 74
74
74
74
74
74
QTY.
3
6
2
214
1
1
4
QTY.
1 1
6
1
2
1
1
1
1
1
6-69
ProCarManuals.com

Lights Air Bag Readiness
....................... 1.27. 2.5 1
Anti-Lock Brake System Warning ............ 2.53. 4.7
Brake System Warning
......................... 2-52
Daytime Running Lamps Indicator ............... 2-54
Interior
..................................... 2-40
Safety Belt Reminder
..................... 1 . 11. 2.50
Service Engine Soon
.......................... 2-54
Loading Your Vehicle
........................... 4-27
Door
........................................ 2-4
Ignition Transmission Lock Check
............... 7-47
PowerDoor
.................................. 2-5
Rear Door Security
............................. 2-5
Sliding Door Child Security
...................... 2-5
Loss of Control
................................ 4- 13
Lubricants and Fluids
............................ 7-51
Lubrication Service. Body
........................ 7-46
Locks
......................................... 2-4
Maintenance. Normal Replacement
parts ........... 6-67
Maintenance Record
............................ 7-53
Maintenance Schedule
............................ 7- 1
Long Tripmighway Definition ................... 7-6
Long TripiHighway Intervals
..................... 7-7
Owner Checks and Services
..................... 7-45
Periodic Maintenance Inspections
................ 7-49
Recommended Fluids and Lubricants
............. 7-5 1
Scheduled Maintenance Services .................. 7-4 Short
Trip/City Definition
....................... 7-5
Short Trip/City Intervals ........................ 7-5
Maintenance. Underbody ......................... 6-56
Maintenance When Trailer Towing
................. 4-37
Malfunction Indicator Lamp ...................... 2-54
Manual Front Seat
............................... 1-2
Mirrors
....................................... 2-43
Convex Outside
.............................. 2-44
Inside Daymight Rearview
..................... 2-43
Power Remote Control
......................... 2-43
Visor Vanity
................................. 2-46
MMT
......................................... 6-4
Model Reference
................................. vi
MountainRoads
................................ 4-22
Multifunction Lever
............................. 2-33
Neutral. Automatic Transmission ................. 2-21
New Vehicle Break-In ........................... 2-16
Nightvision
................................... 4-15
Noise Control System
........................... 6-11
Odometer
.................................... 2-49
Odometer. Trip
................................. 2-49
Off-Road Recovery
............................. 4-11
Oil. Engine
.................................... 6-12
Overheating Engine
............................. 5-12
Owner Checks and Services
....................... 7-45
Owner Publications. Ordering
..................... 8-11
9-6
ProCarManuals.com