1994 GMC SIERRA engine

Table of Contents
Introduction - How to Use this Manual
This section tells you how to use your manual and includes safety
and vehicle damage warnings and symbols.
Section 1 - Seats and Safety Restraints
This section tells you how to use your seats and safety restraints
properly.
Section 2 - Features & Controls
This section explains how to start and operate your Vehicle.
Section 3 - Comfort Controls & Audio Systems
This section tells you how to adjust the ventilation and comfort
controls and how to operate your audio system.
Section 4 - Your Driving and the Road
Here you’ll find helpful information and tips about the road\
and
how to drive under different conditions.
Section 5 - Problems on the Road
This section tells you what to do if you have a problem while
driving, such as
a flat tire or engine overheating.
Section 6 - Service & Appearance Care
Here the manual tells you how to keep your Vehicle running
properly and looking good.
Section 7- Schedule Maintenance Services
This section tells you when to perform vehicle maintenance and
what fluids and lubricants to use.
Section 8 - Customer Assistance Information
This section tells you how to contact your GM division for
assistance and
how to get service publications. It also gives you
information on “Reporting Safety Defects” on page
8-4.
Index
Here’s an alphabetical listing of almost every subject in th\
is
manual. You can use
it to quickly find something you want to read.
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These symbols are used on warning and indicator lights:
Engine Coolant
Temperature Battery Charging
System
I I RELEASE I
Brake Parking Brake
Release
0
SHIFT
Shift Light
Here are some other symbols you may see:
Fuse
Fuel
Hood Release Lighter
I
Engine Oil
Pressure
Low Coolant
I Horn
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Features and Controls
Section
.
Here you can learn about the many standard and optional features on your
vehicle. and information
on starting. shifting and braking . Also explained
are
the instrument panel and the warning systems that tell you if everything
is working properly- and what to do if you have a problem .
For explanation of vehicle symbols. refer to “Vehicle Symbols” in the
Introduction
.
Keys ..................................................... 2-3
DoorLocks
................................................ 2-5
Your Doors and How They Work .............................. 2-7
Tailgate
................................................... 2-8
Theft
............................................. ...... 2-9
New Vehicle “Break-In’’ .................................... 2-10
Ignitionswitch
............................................ 2-11
Starting Your Gasoline Engine
............................... 2-12
Starting Your Diesel Engine
................................. 2-16
Automatic Transmission
.................................... 2-21
Five-Speed Manual Transmission (With
Low Gear) ............ 2-24
Five-Speed Manual Transmission (Without Low Gear)
............ 2-25
LockingRearAxle
......................................... 2-28
ParkingBrake
............................................ 2-28
Parking Over Things That Burn
............................... 2-32
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EngineExhaust ........................................... 2-33
Running
Your Engine While You’re Parked ................... 2-33
Four-WheelDrive
......................................... 2-34
Transfer Case
.......................................... 2-35
Front Axle Locking Feature
............................... 2-36
Windows
................................................ 2-37
Horn
.................................................... 2-39
TiltWheel
............................................... 2-39
Multifunction Lever
........................................ 2-40
Turn Signal and Lane Change Indicator
...................... 2-40
Headlight High-Low Beam
............................... 2-41
Windshield Wipers
...................................... 2-42
Windshield Washer
...................................... 2-43
Cruise Control
.......................................... 2-44
Headlights and Vehicle Lighting
.............................. 2-49
Mirrors
.................................................. 2-54
SunVisors
............................................... 2-55
Cigarette LightedAshtrays ................................... 2-57
Storage Compartments
...................................... 2-58
Instrument Cluster
......................................... 2-67
Warning Lights and Indicators
............................. 2-69
Gages
................................................ 2-78
Center High-Mount Stop Lamp (CHMSL) Feed Wire ............. 2-82
Camper Wiring Harness
..................................... 2-83
Step Bumper Pad
.......................................... 2-84
Trailer Wiring Harness
...................................... 2-83
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Ignition Switch
Use your square key to start your vehicle. The square key lets you turn the
ignition switch to
five different positions:
I 2
5
Q
3
1. OFF
2. RUN
3. START
4. ACC
5. LOCK
ACC (Accessory): ACC lets you use things like the radio and the
windshield wipers when the engine
is off. To get into ACC, push in the key
and turn
it toward you. Your steering wheel will remain locked, just as it
was before you inserted the key.
LOCK: This position locks your ignition, steering wheel and transmission.
It's
a theft deterrent feature. You will only be able to remove your key when
the ignition is turned to
LOCK.
OFF: This position lets you turn off the engine but still turn the steering
wheel. Use
OFF if you must have your vehicle in motion while the engine
is
off (for example, if your vehicle is being pushed).
RUN: This is the position for driving.
START This starts your engine.
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NOTICE:
If your key seems stuck in “Lock” and you can’t turn it, be sure
it is all the
way in. If it is, then turn the steering wheel left and
right while you turn the key
hard. But turn the key only with
your hand. Using a tool to force it could break the key or the
ignition switch.
If none of this works, then your vehicle needs
service.
Key Release Lever
The ignition key
cannot be removed
from the ignition of
manual transmission
vehicles unless the
key release lever is
used.
To Remove the Key
On manual transmission vehicles, turn the key to the LOCK position while
pressing the key release lever down (see the caution earlier \
in
this section
about the key release lever). Keeping your finger on the leve\
r, pull the key
straight out.
On automatic transmission vehicles, turn the key to
LOCK and pull it
straight out.
Starting Your Gasoline Engine
If you have a diesel engine, see “Starting Your Diesel Engine” in the Index.
Engines start differently. The 8th digit of your Vehicle Identification
Number (VIN) shows the code letter or number for your engine. You will
find the VIN at the top left of your instrument panel. (See “Vehicle
Identification Number” in the Index.) Follow the proper step\
s to start the
engine.
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Automatic Transmission:
Move your shift lever to “P’ (Park) or “N” (Neutral). Your engine won’t
start
in any other position - that’s a safety feature. To restart when you’re
already moving, use
“N” (Neutral) only.
NOTICE:
Don’t try to shift to “P” (Park) if your vehicle is moving. If you
do, you could damage the transmission. Shift to “P” (Park) only
when your vehicle
is stopped.
Hold the clutch pedal to the tloor, then shift your gear selector to neutral
while starting
the engine. Your vehicle won’t start if the clutch pedal is not
all the way down
- that’s a safety feature.
To start your 4.3 Liter (Code 2) V6 or 5.0L (Code H) V8 engine:
1. Without pushing the accelerator pedal, turn your ignition key to “Start.”
When
the engine starts, let go of the key. The idle speed will go down
as your engine gets warm.
NOTICE:
Holding your key in “Start” for longer than 15 seconds at a time
will cause your battery to be drained much sooner. And the excessive heat can damage your starter motor.
2. If it doesn’t start right away, hold your key in “Start.” If it doesn’t start
in three seconds, push the accelerator pedal about one-quarter of the
way down for
12 more seconds, or until it starts.
3. If your engine still won’t start (or starts but then stops), it could be
flooded
with too much gasoline. Try this:
Wait
15 seconds to let the starter motor cool down. Then push your
accelerator pedal all the way to
the tloor. Hold it there. Then, hold the
key in “Start” for no more than ten seconds. This clears the extra
gasoline from the engine.
If
the engine still doesn’t start, wait another 15 seconds and do it all
again.
When
the engine starts, let go of the key and the accelerator pedal.
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NOTICE:
Your engine is designed to work with the electronics in your
vehicle.
If you add electrical parts or accessories, you could
change the
way the fuel injection system operates. Before adding
electrical equipment, check with your dealer.
If you don’t, your
engine might not perform properly.
If you ever have to have your vehicle towed, see the part of this
manual that tells how to do it without damaging your vehicle.
See “Towing Your Vehicle” in the Index.
To start your 5.7 Liter (Code K) or 7.4 Liter (Code N) V8 engine:
1. Without pushing the accelerator pedal, turn your ignition key t\
o “Start.”
When the engine starts, let go of the key. The idle speed will go down
as your engine gets warm.
NOTICE:
I
Holding your key in “Start” for longer than 15 seconds at a time
will cause your battery to be drained much sooner. And the
excessive heat can damage your starter motor.
2. If it doesn’t start right away, hold your key in “Start.” If it doesn’t start
in three seconds, push the accelerator pedal about one-quarter
of the
way down for 12 more seconds, or until it starts.
3. If your engine still won’t start (or starts but then stops), \
it could be
flooded with too much gasoline. Try this:
Wait
15 seconds to let the starter motor cool down. Then push your
accelerator pedal all the way to the floor. Hold it there. Then hold the
key in “Start” for no more than ten seconds. This
clears the extra
gasoline from the engine. If the engine still doesn’t start, wait another
15 seconds and do Step
3 again.
Hot Engine Restart (Vehicles With 5.7L LO5 Engine and Over 8500 lbs.
GVWR): If your engine is already hot and then stalls, turn your ignition
key to
OFF. Then, turn your key to RUN, and wait about 20 seconds
before you restart your engine.
When the engine starts, let go of the key and the accelerator pedal.
If your engine is already hot and then stalls, turn your ignition\
key to
OFF.
Then turn your key to “Run” and wait 20 seconds before you restart your
engine. When the engine starts, let go of the key and the accelerator pedal.
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