brake GMC SIERRA 1993 Owners Manual

How To Use This Manual
These symbols are used on warning lights in your vehicle:
1-
Engine Coolant Temperature
BRAKE
Brake Battery
Charging
System
I RELEASE
Parking Brake Release
s Fuel
SHIFT
Shift Light
Engine Oil
Pressure
Low
Coolant
Here are some other symbols you may see:
Fuse
I II
Hood Release Lighter Horn
PO594
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Featums & Contmls
Parking Brake ........................................................................\
.............................. 2-29
Parking Over Things That Burn
........................................................................\
. 2-33
Engine Exhaust
........................................................................\
........................... 2-34
Running Your Engine While You’re Parked
...................................................... 2-35
Four-wheel Drive
........................................................................\
........................ 2-36
Transfer Case
........................................................................\
.......................... 2-37
Front Axle Locking Feature
........................................................................\
.... 2-38
Windows
........................................................................\
....................................... 2-39
Horn
........................................................................\
.............................................. 2-41
Tilt Wheel
........................................................................\
..................................... 2-41
Multifunction Lever
........................................................................\
...................... 2-42
Turn Signal and Lane Change Indicator
....................................................... 2-43
Headlight High-Low Beam
........................................................................\
...... 2-44
Windshield Wipers
........................................................................\
................... 2-45
Windshield Washer
........................................................................\
.................. 2-46
Cruise Control
........................................................................\
.......................... 2-47
Headlights and Vehicle Lighting
........................................................................\
. 2-53
Mirrors
........................................................................\
.......................................... 2-59
Sun Visors
........................................................................\
................................... 2-61
Cigarette LighterlAshtrays
........................................................................\
........... 2-62
Storage Compartments
........................................................................\
............... 2-63
Instrument Cluster ........................................................................\
....................... 2-70
Warning and Indicator Lights
........................................................................\
.. 2-78
Gages
........................................................................\
....................................... 2-87
Camper Wiring Harness
........................................................................\
............. 2-91
Trailer Wiring Harness
........................................................................\
................ 2-91
2-2
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Features & Controls
New Vehicle “Bmak-Rn99
1 NOTICE
Jr 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 kmlh) 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.
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.
If you have
a 3500 HD Model, see “Parking Brake” in the Index.
Ignition Switch
Use your square key to start your vehicle. The square key lets you turn the
ignition switch
to five different positions:
6 1
RUN
KO404
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.
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Automatic lLansmission
K2362
There are several different positions for your gear lever.
P (Park)
This locks your rear wheels. It’s the best position to use when you start your
engine because your vehicle can’t move easily.
* It is dangerous to get out of your vehicle if the shift lever is not fully
in
P (Park) with the parking brake firmly set. Your vehicle can roll.
Don’t leave your vehicle when the engine is running unless \
you have
to. If you have left the engine running, the vehicle can move
suddenly. You or others could be injured.
To be sure your vehicle
won’t move, when you’re on fairly level ground, always se\
t your parking brake and move the shift lever to
P (Park).
If you have four-wheel drive, your vehicle will be free to roll-even
if
your shift lever is in P (ParkLif your transfer case is in N (Neutral).
So, be sure the transfer cas s in a drive gear-not N {“eutral).
See “Shifting Into
P- I;’’ in tne 3ex. If you are parking on a hill, or
if you’re pulling a traller, also see “Parking on Hills” \
or “Towing a
Trailer’’ in the Index.
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Featums & Contmls
R (Reverse)
Use this gear to back up.
Shifting
to R (Reverse) while your vehicle is moving forward could damage
your transmission. Shift
to R (Reverse) only after your vehicle is stopped. I
b
1
damaging your transmission, see “If Yo$re Stuck: In Sand, Mud, Ice or
Snow” in the Index.
N (Neutral)
In this position, your engine doesn’t connect with the wheels.
To restart when
you’re already moving, use
N (Neutral) only. Also, use N (Neutral) when your
vehicle is being towed.
CAUTION I
Shifting out of P (Park) or N (Neutral) while your engine is “racing”
(running at high speed) is dangerous. Unless your foot is fi\
rmly on
the brake pedal, your vehicle could move very rapidly. You cou\
ld lose
control and hit people
or objects. Don’t shift out of P (Park) or N
wI ! your enaine is racing.
I
NOTICE
I
1
Damage to your transmission caused by shifting out of P (Park) or N
(Neutral) with the engine racing isn’t covered by your war\
ranty.
OD (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
- Going about 35 mph (56 kmlh) or more, push the accelerator all the
pedal about halfway down
way down
You’ll shift down
to the next gear and have more power.
OD 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.
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D (Third Gear)
This is like
OD, 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 econo\
my) 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 vehic\
le is
going slowly enough.
NWTIGE
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.
AWZ , <,*,~l,<.,. ...
Also, if you stop when going uphill, don’t hold your vehic there with only the
accelerator pedal.
This could overheat and damage ,the transmission. Use your
brakes or shii into P (Park) to hdd your vehicle in position on a hill.
.,$*’,,&:&> ._,, , . ~ ~ ,>&:a
2-23
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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.
N (Neutral)-Use this position when you start or idle your engine,
R (Reverse)-To back up, press down the clutch pedal and shift into R. Let
up on the clutch pedal slowly while pressing the accelerator p\
edal.
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, for parking your vehicle.
FivemSpeed Manual 7Fansmission
(With Low Gear)
e
K2464
2-25
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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).
N (Neutral)-Use this position when you start or idle your engine.
R (Reverse)-To back up, press the clutch pedal and shift into R. Let up on
the clutch pedal slowly while pressing the accelerator pedal. If you shift from
OD into R, the shift lever must first be placed in the N (Neutral) position
centered between
2 and 3 prior to shifting into R.
NOTICE I
Shift to R (Reverse) only after your vehicle is stopped. Shifting to R
(Reverse) while vour vehicle is movina could damaae vour transmission.
- -
Also, use Reverse, along with the parking brake, for parking your ve\
hicle.
Shift Light
I K2317
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 for best fuel economy.
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.
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Parking Brake
K2221
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 marked RELEASE.
Driving with the parking brake on can cause your rear brakes to overheat.
You may have to replace them, and you also da other p;
of I
your vehicle.
’ ‘
If you are on a hill:
See “Parking on Hills” in the Index. That part shows how to turn your front
wheels.
If you are towing a trailer and are parking on any hill:
See “Towing a Trailer” in the Index. That part shows what to do first to keep
the trailer from moving.
2-29
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Features & Controls
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 stops, using the parking brake foot pedal, from 20 mph (32 k\
m/h)
about 2
112 miles (4 km) apart. In between stops, drive the vehicle at 20
mph (32 kmlh).
Torque Lock
The parking brake should be set first whenever leaving the dri\
ver’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 selector lever to P (Park).
When preparing
to move the vehicle, the selector lever should be moved out
of
P (Park) BEFORE releasing the parking brake. Set the parking brake first,
then release the transmission from
P (Park), even on level surfaces.
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).
Shifting Into P (Park) (Automatic Transmission Models Only)
1 CAUTION
It can be dangerous to get out of your vehicle if the shift lever is not
fully in
P (Park) with the parking brake firmly set. Your vehicle can
roll.
If you have left the engine running, the vehicle can move suddenly.
You
or others could be injured. TO be sure your vehicle won’t move,
when you’re
on fairly level ground, use the steps that follow.
If you have four-wheel drive and your transfer case is in N (Neutral),
your vehicle will be free to roll-even if your shift lever is in P
{Park). So, be sure the transfer case is in a drive gear-not N
(Neutral).
If you are parking on a hill, or if you’re pulling a trailer, also see
“Parking on Hills9’ or “Towing a Trailer” in the Index. I
2-30
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