brake GMC SIERRA 1994 Owners Manual

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
ix
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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
2-1
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Parking Lots
If you park in a lot where someone will be watching your vehicle, it’s best
to lock it up and take your keys. But what
if you have to leave your ignition
key? What if you have to leave something valuable
in your vehicle?
0 Put your valuables in a storage area or console.
0 Lock the console.
Lock all the doors except the driver’s.
0 Then take the door key with you.
New Vehide “Break-In”
NOTICE:
Your modern vehicle doesn’t need an elaborate “break-in.” But
it will perform better in the long run if you follow these
guidelines:
Keep your speed at 55 mph (88 km/h) or less for the first
500 miles- (804 km).
Don’t drive at any one speed - fast or slow - for the first
500 miles (804 km). Don’t make full-throttle starts.
0 Avoid making hard stops for the first 200 miles (322 km) or
so. During this time your new brake linings aren’t yet broken
in. Hard stops with new linings can mean premature wear and
earlier replacement. Follow
this “breaking-in” guideline
every time you get new brake linings.
New Vehicle “Break-In” - 3500 HD Model
If you have a 3500 HD model, your parking brake requires a special
break-in procedure. See “Parking Brake” in the Index.
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@ (Automatic Overdrive)
This position is for normal driving. If you need more power for
passing, and you’re:
- Going less than about 35 mph (56 km/h), push your accelerator
pedal about halfway down.
- Going about 35 mph (56 kdh) or more, push the accelerator all
the way down.
You’ll shift down to the next gear and have more power.
@ should not be used when towing a trailer, carrying a heavy load,
driving
on steep hills, or for off road driving. Select “D”(third gear)
when operating the vehicle under any
of these conditions.
D (Third Gear)
This is like @, but you never go into Overdrive. You should use “D”
when towing a trailer, carrying a heavy load, driving on steep hills, or
for off-road driving.
2 (Second Gear)
This position gives you more power but lower fuel economy. You can
use
“2” on hills. It can help control your speed as you go down steep
mountain roads, but then you would
also want to use your brakes off
and
on. If you manually select “2”, the transmission will drive in
second gear. You may use this feature for reducing torque to the rear
wheels when
you are trying to start your vehicle from a stop on
slippery road surfaces.
1 (First Gear)
This position gives you even more power (but lower fuel economy)
than
“2.” You can use it on very steep hills, or in deep snow or mud. If
the selector lever is put in “1 ,” the transmission won’t shift into first
gear
until the vehicle is going slowly enough.
b
NOTICE:
If your rear wheels can’t rotate, don’t try to drive. This might
happen if you were stuck in very deep sand or mud or were up
against
a solid object. You could damage your transmission.
Also,
if you stop when going uphill, don’t hold your vehicle there
with only the accelerator pedal. This could overheat and damage
the transmission. Use your brakes
or shift into “P” (Park) to
hold your vehicle in position on a hill.
2-23
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I
Five-Speed Manual Transmission
(With Low Gear)
This is your shift
pattern. Here’s how to
operate your
transmission:
L (Low Gear) is
intended only for
heavy loads and is not
recommended for
normal driving.
0 L (Low Gear) - Press the clutch pedal and shift into “L”. Then,
slowly let up on the clutch pedal as
you press the accelerator pedal.
Shift into
“L” only when the vehicle speed is below 5 mph (8 kdh). Tf
you try to shift into “L” at excessive vehicle speeds, the shift lever will
not move into the “L” position until vehicle speed is reduced.
0 1 (First Gear) - Press the clutch pedal and shift into “1.” Then,
slowly let up
on the clutch pedal as you press the accelerator pedal.
You can shift into “1” when you’re going less than 20 mph (32 km/h).
If you’ve come
to a complete stop and it’s hard to shift into “1,” put the
shift lever in “N” (Neutral) and let up on the clutch. Press the clutch
pedal back down. Then shift into
“I .” If you try to shift into “1” at
excessive vehicle speeds,
the shift lever will not move into the “1”
position until vehicle speed is reduced.
0 2 (Second Gear) - Press the clutch pedal as you let up on the
accelerator pedal and shift into “2.” Then, slowly let up on the clutch
pedal as
you press the accelerator pedal.
0 Higher Gears - Shift into the higher forward gears the same way you
do for
“2.” Slowly let up on the clutch pedal as you press the
accelerator pedal.
To Stop - Let up on the accelerator pedal and press the brake pedal.
Just before the vehicle stops, press the clutch pedal and the brake pedal,
and shift
to “N” (Neutral).
0 N (Neutral) - Use this position when you start or idle your engine.
R (Reverse) - To back up, first press down the clutch pedal. Wait
3-5 seconds for the internal parts to stop spinning and then, shift into
“R.” Let up on the clutch pedal slowly while pressing the accelerator
pedal.
2-24
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NOTICE:
Shift to “R” (Reverse) only after your vehicle is stopped.
Shifting
to “R” (Reverse) while your vehicle is moving could
damage your transmission.
Also, use Reverse, along with the parking brake, when turning off your
engine and parking your vehicle.
Five-Speed Manual Transmission
(Without
Low Gear)
This is your shift
pattern. Here’s how to
operate your
transmission:
1 (First Gear) - Press the clutch pedal and shift into “1 .” Then,
slowly
let up on the clutch pedal as you press the accelerator pedal.
You can shift into
“1” when you’re going less than 20 mph (32 km/h).
If you’ve come to a complete stop and it’s hard to shift into L‘ 1 ,” put the
shift lever
in Neutral and let up on the clutch. Press the clutch pedal
back down. Then shift
into LLl.”
2 (Second Gear) - Press the clutch pedal as you let up on the
accelerator pedal and shift
into “2.” Then, slowly let up on the clutch
pedal as
you press the accelerator pedal.
3,4 and 5 (Third, Fourth and Fifth Gears) - Shift into “3,” “4” and
“5” the same way you do for “2.” Slowly let up on the clutch pedal as
you press the accelerator pedal.
To Stop - Let up on the accelerator pedal and press the brake pedal.
Just before the vehicle stops, press
the clutch pedal and the brake pedal,
and shift to Neutral.
2-25
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R (Reverse) - To back up, first press down the clutch pedal. Wait
3-5 seconds for the internal parts to stop spinning and then, shift into
“R.” Let up on the clutch pedal slowly while pressing the accelerator
pedal.
NOTICE:
Shift to “R” (Reverse) only after your vehicle is stopped.
Shifting to
LLR” (Reverse) while your vehicle is moving could
damage your transmission.
Also, use Reverse, along with the parking brake, when turning off your
engine and parking your vehicle.
Shift Light
If you have a manual
transmission,
you may
have
a SHIFT light.
This light will show
you when
to shift to
the next higher gear
l for best fuel economy.
I
When this light comes on, you can shift to the next higher gear if weather,
road and traffic conditions let you. For
the best fuel economy, accelerate
slowly and shift when the light comes on.
While you accelerate, it
is normal for the light to go on and off if you
quickly change the position
of the accelerator. Ignore the SHIFT light when
you downshift.
Four-Wheel-Drive Vehicles Only: If your vehicle has four-wheel drive
and is equipped with
a manual transmission, disregard the shift light when
the transfer case is in 4-LOW.
2-26
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Locking Rear Axle
If you have this feature, your rear axle can give you additional traction on
snow, mud, ice, sand or gravel. It works like a standard axle most of the
time, but when one
of the rear wheels has no traction and the other does, the
locking feature will allow the wheel with traction to move the vehicle.
To set the parking brake:
Hold the regular brake
pedal down with your
right foot. Push down the parking brake
pedal with your left
foot.
If the ignition is on, the brake system warning light will come on.
To release the parking brake:
Hold the regular brake
pedal down. Pull the lever, located just
above the parking
brake pedal, marked
RELEASE to release
the parking brake.
-
If the ignition is on when the parking brake is released, the brake system
warning light will
go off.
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NOTICE:
Driving with the parking brake on can cause your rear brakes to
overheat. You may have
to replace them, and you could also
damage other parts of your vehicle.
If you are towing a trailer and are parking on any hill: See “Towing a
Trailer” in the Index. That section shows what to do first to keep the trailer
from moving.
Propshaft Brake Burnish Procedure
If you have a 3500 HD model, it is recommended that the propshaft
mounted parking brake be burnished
as part of the new vehicle break in.
The parking brake will work best after it has been burnished following these
instructions.
Make
10 (ten) stops, using the parking brake foot pedal, from 20 mph
(32 kdh) about
2 1/2 miles (4 km) apart. In between stops, drive the
vehicle at
20 mph (32 km/h).
Torque Lock
The parking brake should be set first whenever you leave the driver’s seat.
If you are parked on
a hill and the transmission is placed in “P” (Park)
before
the parking brake is set, the weight of the vehicle may put too much
force
on the parking pawl in the transmission. It may be difficult to pull the
selector lever out
of “P’ (Park). This is called “torque lock.” To prevent this,
the parking brake should be set
BEFORE moving the gear selector to “P’
(Park).
When preparing to move
a vehicle parked on a hill, the selector lever should
be moved out of
“P’ (Park) BEFORE releasing the parking brake. Even
when
on level surfaces, its a good idea to set the parking brake first before
shifting
the transmission from “P” (Park).
If torque lock does occur, you may have to have another vehicle nudge your
vehicle uphill a little to take some
of the pressure off the transmission while
you pull the selector lever out of “P” (Park).
2-29
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Shifting Into “P” (Park) (Automatic
Transmission Models Only)
Steering Column Shift Lever
1. Hold the brake
pedal down
with
your right foot
and set the
parking brake.
2. Move the shift lever into “P” (Park) position like this:
0 Pull the lever toward you.
0 Move the lever up as far as it will go.
3. If you have four-wheel drive, be sure the transfer case is in a drive gear
- not in “N” (Neutral)
4. Move the ignition key to LOCK.
2-30
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