1993 GMC SIERRA ignition

Features & Controls
“Engine Coolant’’ in the Index and have your vehicle s\
erviced as soon as
you can.
Charging System Light
K2328
The red charging system light is located at the upper right hand corner of
your instrument cluster. It 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 elect\
rical charging system. It could indicate that you have a loose alternator drive belt, or\
that
you have some other electrical problem. Have it checked right away. Driving
while this light is on could drain your battery.
If you must drive a short distance with the light on, be certain to turn off all
your accessories, such as the radio and air conditioner.
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Malfunction Indicator Lamp (Service Engine Soon Light)
I
SERVICE
EF_'31NE
SOON
K2329
A computer monitors operation of your fuel, ignition, and emission control
systems. This light should come on when the ignition is on bu\
t the engine is not running, as a check to show you it is working. If it does not come on at
all, have it fixed right away.
If it stays on, or comes on while you are driving,
the computer is indicating that you have a problem. You should take your
vehicle in for service soon.
NOTICE
E
If you keep driving your vehicle with this light on, after awhile the emission
controls won't work well, your fuel economy won't be as good, and your
engine may not run as smoothly. This could lead
to costly repairs not
covered by your warranty.
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Gages
Fuel Gage
Standard Cluster, Gas Standard Clusfer, Diesel
ADED FUEL ONLY DtESEL FUEL ONLY
n
Tachometer Cluster, Gas Tachometer Cluster, Diesel
UNtE
FUEL
a
EL I
K2333
The fuel gage, when the ignition is on, tells you about how much fuel you
have left in your tank. The gage will first indicate empty be\
fore you are out
of fuel, and you should get more fuel
as soon as possible.
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Features & Controls
Listed are four situations you may experience with your fuel g\
age:
At the gas station, the fuel pump shuts off before the gage reads full.
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 fu\
ll, but
it
actually took a little more or less than half the tank's capa\
city 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 when you turn off the ignition.
None of these indicate a problem with the fuel gage.
For information on how to
fill your fuel tank see "Fuel-Filling Your Tank" in
the Index.
For your fuel tank capacity, see "Fuel-Tank Capacity"
in the Index.
Engine Coolant Temperature Gage
760
K2334
This gage shows the engine coolant temperature. If the gage pointer moves
into the red area, about 260°F
(145°C) or more, your engine is too hot! It
means that your engine coolant has overheated.
If you have been operating
your vehicle under normal operating conditions, you should pull \
off the road,
stop your vehicle and turn
off the engine as soon as possible.
Hot Coolant Can Burn You Badly!
In "Problems on the Road", this manual shows what to do. See \
"Engine
Overheating" in the Index.
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Features & Controls
A reading in the low pressure zone may be caused by a dangerously low oil
level or other problem causing low oil pressure. Check your oil as soon as
possible.
bnu I IUIY
+ Don’t keep driving if the oil pressure is low. If you do, your engine
can become
so hot that it catches on fire. You or others could be
burned. Check your oil as soon as possible and have your vehicle
serviced.
I NOTICE
Damage to your engine from neglected oil problems can be costly anc
not covered by your warranty.
Voltmeter
Standard Cluster Tachometer Cluster
14 14
A
K2336
When your engine is not running, but the ignition is on (in the Run position),
this gage shows your battery’s state of charge in DC volts. 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 ope\
rating range.
Readings
in either warning zone indicate a possible problem in the electrical
system.
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Comfort Controls & Audio Systems
i
Rear Window Defogger
You can tell if your vehicle has this option by looking at the rear window. If
you see lines running across the glass, you have it. Thes'e a\
re the wires
which heat your window.
For best results, clear the window of as much snow or ice as possible first.
To turn on the rear window defogger, find the switch marked
REAR DEFOG
on your instrument panel, just below the heater system. Press \
the right side
of the switch, with the defog symbol on
it, until the light in the switch comes
on, then release
it. The rear window defogger will only work if the ignition
switch is turned
to RUN.
You can turn the defogger off at any time by pressing the left, lighted side of
the switch. The defogger will shut itself
off after several minutes, so that the
glass does not get
too hot. If the defogger shuts off, and the window still
isn't clear, turn the defogger on again.
-. -
I.--:
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Comfort Controls & Audio Systems
AM Stereo
This means the Delco@ system can receive C-QUAM@ stereo broadca\
sts. Many AM stations around the country use C-QUAM@
to produce stereo,
though some do not. (C-QUAM@ is a registered trademark of Motorola, Inc.).
If your Delco@ system can get C-QUAM? your “STEREO” light will come on
when you’re receiving it.
How to Operate Your AM ETWRadio
I 2 3 4 ..
K2186
To Play the Radio
Press the PWR-VOL-TONE knob to switch the radio on and off. This knob
does
two other things:
It controls the volume. The VOL knob increases the volume when
rotated clockwise.
The knob behind the PWR-VOL knob is the TONE knob. Rotate this
knob counterclockwise for more bass and clockwise for more treb\
le.
TUNE Button
Press the side of the button with the down arrow to decrease the radio
frequency or the side of the switch with the up arrow to increase the radio
frequency.
RCL Button
When the ignition is off, press the RCL button to display the time. With the
ignition in
RUN or ACC, press it to recall the station frequency when the time
is showing.
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Pushbuttons
The five pushbuttons let you return to favorite stations. Just:\

Tune in the station you want.
Press the SET button. (SET appears in the VF display for a few
Within 5 seconds, press one of the five pushbuttons to store the station.
seconds).
Whenever you press that button, the preset station will return.\

How to Operate Your AM-FM Stereo
Audio System and Cassette Deck
PO200
To Play the Radio
Press the amber PWR button
to switch the radio on and off.
VOL
Controls the volume. Pressing (t) increases volume; (-) decreases volume.
RCL
When the ignition is off, press the RCL button to display the time. With the
ignition on, press
RCL to recall the station frequency and volume setting
when the time is showing.
BAUFADE
To balance and fade the sound between the rightlleft or frontlrear speakers,
use the four buttons with the speaker symbols on them. Press \
the left and
right buttons to adjust the left and right speaker balance. Pr\
essing the top
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