1996 GMC SIERRA ignition

Electrochromic Inside Rearview Mirror
with Compass (Option)
Your vehicle may have an electrochromic inside
rearview mirror.
When on, the mirror automatically dims to the proper
level
to minimize glare from lights behind you after dark.
The mirror also includes an eight point compass
display
in the upper right
corner of the mirror face.
When
on, the compass
automatically calibrates
as the vehicle
is driven.
To use the electrochromic mirror only, move the switch
at the bottom
of the mirror to the M position. To use the
electrochromic mirror
as well as the compass. move the
switch to the
C/M position. To turn both features off,
move the switch to the
OFF position. When
the ignition is on and the mirror switch is
in the
CIM position, the compass display'will show two
character boxes for approximately two seconds. If, after
two seconds, the display does
not show a compass
heading
(N for North, for example), there may be a
strong magnetic field interfering with the compass. Such
interference may include magnetic antenna mounts,
a
magnetic note pad holder, or a similar magnetic item. If
removing these items does not correct the condition, see
your
GM dealer for assistance.
When cleaning the mirror, use a paper towel or similar
material dampened
with glass cleaner. Do not spray
glass cleaner directly on the mirror
as that may cause
liquid cleaner to enter the mirror housing.
Compass Varia~ 3
Under certain circumstances, as during a long distance
cross-country trip,
it will be necessary to adjust the
compass
to compensate for compass variance. Compass
variance
is the difference between earth's magnetic
north and true geographic north.
If not adjusted to
account for compass variance, your compass
could give
hlse readings.
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Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows AIR BAG. The system checks the
air bag’s electrical system for malfunctions. The light
tells
you if there is an electrical problem. The system
check includes the air bag sensors, the air bag module,
the wiring and the diagnostic module. For more
information
on the air bag system, see “Air Bag” in
the Index.
AIR
BAG
You will see this light flash
for a few seconds when you
turn your ignition
to RUN
or START. Then the light
should go out. This means
the system is ready.
Charging System Indicator Light
If the air bag readiness light doesn’t come on when you
start your vehicle, or stays on, or comes on when you
are driving, your air bag system may not work properly.
Have your vehicle serviced right away. This
light should come
on
briefly when you turn on the
ignition, before starting the
engine, as
a check to show
you it is working.
After the engine starts,
the light should go out. If it stays
on or comes on while
you are driving, you may have a
problem with your charging system. It could indicate a
problem with the alternator drive belt,
or some other
charging system problem. Have
it checked right away.
Driving while this light is on could drain your battery.
If
you must drive a short distance with this light on, it
helps to turn off all your accessories, such
as the radio
and air conditioner.
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Voltmeter
I When your engine is not
running, but the ignition is
in the RUN position, this
gage shows your battery’s
9 19 state of charge in DC volts.
n
When the engine is running, the gage shows the
condition
of the charging system. Readings between the
low and high warning zones indicate the normal
operating range. Readings
in the low warning zone
may occur when a
large number of electrical accessories are operating
in
the vehicle and the engine is left at an idle for an
extended period. This condition
is normal since the
charging system
is not able to provide full power at
engine idle.
As engine speeds are increased, this
condition should correct itself as higher engine speeds
allow
the charging system to create maximum power.
You can only drive for a short time
with the reading in
either warning zone. If you must drive, turn off all
unnecessary accessories.
Readings
in either warning zone indicate a possible
problem
in the electrical system. Have the vehicle
serviced
as soon as possible.
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Brake System Warning Light r
Your vehicle’s hydraulic brake system is divided into
two
parts. If one part isn’t working, the other part can
still work and stop you. For good braking, though, you
need both parts working well.
If the warning light comes on, there could be a brake
problem. Have your brake system inspected right away.
BRAKE
This light should come
on briefly when
you turn
the ignition key to
RUN.
If it doesn’t come on then,
have
it fixed so it will be
ready to
warn you if there’s
a problem.
If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal is
harder to push. Or, the pedal may go closer to the floor.
It may take longer to stop. If
the light is still on, have the
vehicle towed for service. (See “Towing Your Vehicle”
in the Index.)
I! CAUTION:
Your brake system may not be working properly
if the brake system warning light is on. Driving
with the brake system warning light on can lead
to an accident. If the light
is still on after you’ve
pulled
off the road and stopped carefully, have
the vehicle towed for service.
When the ignition is on, the brake system warning light
will also come on when you set your parking brake. The
light will stay on if your parking brake doesn’t release
fully.
If it stays on after your parking brake is fully
released,
it means you have a brake problem.
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ANTI -
LOCK
Qnti-Lock Brake System Warning Light
With the anti-lock brake.
system, this light will come
on when
you start your
engine and may stay on
for several seconds.
That’s normal.
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 part.
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.
Engine Coolant Temperature Gage
I This gage shows the engine
~ coolant temperature.
It also provides an indicator of how hard your vehicle is
working. During a majority of the operation, the gage
will read 210°F
(100°C) or less. If you are pulling a
load or going up hills, it is normal for the temperature to
fluctuate and approach the 260°F ( 125 “C) mark. If the
gage reaches the 260°F
(I 25 “C) mark, it indicates that
the cooling system is working beyond its capacity.
In “Problems
on the Road,” this manual shows what to
do. See “Engine Overheating” in the Index.
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Malfunction Indicator Lamp (Service
- ;ine Soon Light) (Gasoline Engine)
Your vehicle is equipped
with a computer which
monitors operation
of the
fuel, ignition and emission SERVICE
ENGINE
SOON
control systems.
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 TI 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, which
may prevent more serious damage to your vehicle. This
system is
also designed to assist your service technician
in correctly diagnosing any malfunction.
I NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead
to costly repairs that may not be
covered by your warranty.
This light should come on, as a check to show you it is
working, when the ignition is
on and the engine is not
running.
If the light doesn’t come on, have it repaired.
This light will also come
on during a malfunction in one
of two ways:
0 Light Flashing -- A misfire condition has been
detected.
A misfire increases vehicle emissions and
may damage
the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service
is required.
0 Light On Steady -- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
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Fuel Gage
81 The fuel gage, when the
ignition is on, tells you
about how much fuel you
have left
in your tank.
E
The gage will first indicate EMPTY (E) before you
are
out of fuel, and you should get more fuel as soon
as possible. Here
are four situations
you may experience with your
fuel gage. None of these indicate a problem with the
fuel gage.
At the gas station, the fuel pump shuts off before the
gage reads
FULL (F).
It takes a little more or less fuel to fill up than the
fuel gage indicated.
For example, the gage may have
indicated the tank was half full, but
it actually took a
little more or less than half the tank’s capacity to fill
the tank.
The gage moves a little when you turn a corner or
speed up.
The gage doesn’t go back to EMPTY (E) when you
turn off the ignition.
If you have a diesel engine, see “Fuel Gage”
in the
Diesel Engine Supplement.
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Rear Window Defogger (Option)
If you see lines running across the rear window,
you have the rear window defogger. The lines warm
the glass.
- To turn on the rear window
defogger, press this button next
to the fan control knob.
The rear window defogger
will only work
if the
ignition switch
is turned to
RUN. For best results, clear
the window of as much
snow or ice as possible first.
The defogger will shut itself
off after several minutes. If
you need additional warming time, press the button
again.
You can turn the defogger off at any time by
pressing the button. Do not
attach a temporary vehicle license, tape
or decals
across the defogger grid
on the rear window.
LOTICE:
Don’t use a razor blade or something else sharp
on the inside
of the rear window. If you do, you
could cut or damage the warming grid, and the
repairs wouldn’t be covered by your warranty.
Audio Systems
Your Delco@ audio system has been designed to operate
easily and give years of listening pleasure.
You will get
the most enjoyment out of
it if you acquaint yourself
with
it first. Find out what your Delco system can do
and how to operate all its controls, to be sure you’re
getting the most
out of the advanced engineering that
went into
it.
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