GMC SIERRA 1994 Owners Manual

Low Coolant Warning Light
The orange Low
Coolant Warning
light, if you have one,
is located
in the upper
left corner of the
instrument cluster.
If you have
on anytime
engine may a
diesel engine, you have a low coolant light. If this light comes
the engine is running, your system
is low on coolant and the
overheat. See “Engine Coolant”
in the Index and have your
vehicle serviced as soon as you can.
Charging System Warning Light
The red Charging
System Warning light
I is located at the upper
right corner
of the
instrument cluster.
The Charging System Warning 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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Malfunction Indicator (Service Engine Soon) Lamp
The orange
SERVICE
ENGINE
SOON
A computer monitors the operation of your fuel, ignition and emission
control systems. This light should come on when the ignition
is on but the
engine is not running,
as a check to show you its 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:
If you keep driving your vehicle with this light on, after a while
the emission controls won’t work
as 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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Check Gages Light
The orange Check
Gages light is located
near the lower right
corner
of the
instrument cluster.
This light
will come on briefly when you are starting the engine. If the light
comes
on and stays on while you are driving. it could indicate a problem
with your vehicle. It could be a problem with your oil pressure, coolant
temperature. or some other problem. Chcck your various gages
to see if they
are
in the warning zones. If they are, have your vehicle serviced right away.
Daytime Running Lights (DRL) Indicator Light
(Canada Only)
The green Daytime
Running Lights
(DRL) Indicator light,
if you have one, is
located near the upper
center
of the
instrument cluster.
If your vehicle was first sold. when new. in Canada, you will have this green
lighl on the instrument pancl.
It will light whenever the Daytime Running
Lights
are on. For more details about DRL, sce "Headlights and Vehicle
Lighting'.
in this section.
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Shift Indicator Light
The orange SHIFT
Indicator light, if you
have one,
is located
near the upper left
corner of the
instrument cluster.
This light, with the word
SHIFT and the upshift arrow, is used on some
models with manual transmissions. Depending on your particular model,
your vehicle may
not have this light. The SHIFT indicator light will help
you get the best fuel economy. See “Shift Light” or “Shift Speeds-
Vehicles Without Shift Light”
in this section for more information.
Headlight High Beam Indicator Light
light is located near
the middle left edge of
the instrument cluster.
The high beam indicator
is on whenever you use your high beam headlights.
For more details about high beams, see “Headlight High-Low Beam”
earlier
in this section.
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Turn Signal and Lane Change lndicator Lights
A
A
The green Turn Signal
and Lane Change
Indicator lights are
located at the middle
left and right edges
of
the instrument cluster.
The signal indicator
will come on whenever you signal a turn or lane
change. See “Turn Signal and Lane Change Indicator” earlier in this section.
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Gages
Fuel Gage
Standard Cluster -Gas Standard Cluster --Diesel
Tachometer Cluster -Gas Tachometer Cluster --Diesel
The fuel gage, when the ignition is on. tclls you about how much fuel you
have left
in your tank. The gage will first indicate empty before you are out
of fuel, and you should get Inore fuel as soon 11s possiblc.
Listed are four situations you may experience
with your fuel gage:
At the gas station. the fuel pump shuts off before the gage reads full.
0 It takes a little more or less fuel to fill up than thc I’wI gage indicated.
For example, the gage may have indicatcd thc tank was half full. but it
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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 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
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 Cooianf Can Burn You Badly!
In “Problems on the Road,” this ~nanual shows what to do. See “Engine
Overheating”
in the Index.
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Oil Pressure Gage
Standard Cluster -Gas Standard Cluster -Diesel
30
I
Tachometer Cluster -Gas Tachometer Cluster -Diesel
The oil pressure gage shows the engine oil pressure in psi (pounds per
square inch) when the engine
is running. Canadian vehicles indicate
pressure
in kPa (kilopascals). Oil pressure may vary with engine speed,
outside temperature and
oil viscosity, but readings above the low pressure
zone indicate the normal operating range.
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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.
NOTICE:
Damage to your engine from neglected oil problems can be
costly and
is not covered by your warranty.
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Voltmeter
Standard Cluster Tachometer Cluster
14
Center
High Mount Stop Lamp (CHMSL)
- Your vehicle may
have a Center High
Mount Stop
lamp
(CHMSL) located
above the
rear
window.
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