engine GMC SIERRA 1995 User Guide

NOTICE:
After you’ve used the coolant heater, be sure to store the cord as
it was before to keep
it away from moving engine parts. If you
don’t,
it could be damaged.
How long should you keep the coolant heater plugged in? The answer
depends on the weather, the kind of oil you have. and some other things.
Inste.ad of trying
to list everything here, we ask that you contact your GM
dealer in the area where you‘ll be parking your vehicle. The dealer can give
you the best advice for that particular area.
Automatic Transmission
There are several different positions for your shift lever.
If your vehicle is equipped with an automatic transmission, it now features
an electronic shift position indicator
within the instrument cluster. This
display must be powered anytime the shift lever is capable
of being moved
out of the
PARK (P) position. This means that if your key is in the OFF
position, but not locked, there will be a small current drain on your battery
which could discharge your battery over
a period of time. If you have a need
to leave your key
in the ignition in the OFF position for an extended period
for any reason,
it is recommended that you disconnect the battery cable
from the battery to prevent discharging your battery.
PARK (P) -This locks your rear wheels. It’s the best position to use
when you start your engine because your vehicle can’t move easily.
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Your vehicle has a brake-transmission shift interlock. With the ignition in
the RUN position, you must fully apply your regular brakes before you can
shift from PARK (P).
If you cannot shift out of PARK (P), ease pressure on the shift lever and
push the
shift lever all the way into PARK (P) as you continue pressing the
brake pedal.
Then move the shift lever into the gear you want. If you still
cannot shift the shift lever out of
PARK (P), see ”Shifting Out of PARK (P)”
later in this section.
REVERSE (R) - Use this gear to back up.
NOTICE:
Shifting to REVERSE (R) while your vehicle is moving forward
could damage your transmission. Shift to REVERSE
(R) only
after your vehicle is stopped.
To rock your vehicle back and forth to get out of snow, ice or sand
without damaging your transmission, see
“If You‘re Stuck: In Sand,
Mud, Ice or Snow”
in the Index.
a NEUTRAL (N) - In this position, your engine doesn’t connect with
the wheels. To restart when you’re already moving, use NEUTRAL (N)
only. Also, use NEUTRAL (N) when your vehicle is being towed.
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A CAUTION:
Shifting out of PARK (f) or NEUTRAL (N) while your engine is
“racing” (running at high speed) is dangerous. Unless your foot
is firmly on the brake pedal, your vehicle could move very
rapidly.
You could lose control and hit people or objects. Don’t
shift out of
PARK (P) or NEUTRAL (N) while your engine is
racing.
NOTICE:
Damage to your transmission caused by shifting out of PARK
(P) or NEUTRAL (N) with the engine racing isn’t covered by
your warranty.
AUTOMATIC OVERDRIVE (a) - 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.
the way down.
You’ll shift down to the next gear and have more power.
- Going about 35 mph (56 kdh) or more, push the accelerator all
0 should not be used when towing a trailer, carrying a heavy load,
driving on steep hills, or for off-road driving. Select THIRD
GEAR
(3) when operating the vehicle under any of these
conditions.
THIRD GEAR (3) - This is like 63, but you never go into Overdrive.
You should use
THIRD GEAR (3) when towing a trailer. carrying a
heavy load, driving on steep hills, or
for off-road driving.
0 SECOND GEAR (2) - This position gives you more power but lower
fuel economy. You can use
SECOND GEAR (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 SECOND GEAR (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.
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You can shift into FIRST GEAR (2) when you’re going less than 20
mph (32 kmh). If you’ve come to a complete stop and it’s hard to shift
into FIRST GEAR
(2), put the shift lever in NEUTRAL (N) and let up
on the clutch. Press the clutch pedal back down. Then shift into FIRST
GEAR
(2). If you try to shift into FIRST GEAR (2) at excessive
vehicle speeds, the shift lever will not move into the FIRST GEAR
(2)
position until vehicle speed is reduced.
0 SECOND GEAR (3) - Press the clutch pedal as you let up on the
accelerator pedal and shift into SECOND GEAR
(3). Then, slowly let
up on the clutch pedal as you press
the accelerator pedal.
0 THIRD GEAR (4), FOURTH GEAR (5) - Shift into the higher
forward gears
the same way you do for SECOND GEAR (3). 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 (N) - Use this position when you start or idle your
engine.
REVERSE (R) - To back up, first press down the clutch pedal. Wait
about
5 seconds for the internal parts to stop spinning and then, shift
into REVERSE (R). Let up
on the clutch pedal slowly while pressing
the accelerator pedal.
NOTICE:
Shift to REVERSE (R) only after your vehicle is stopped.
Shifting to
REVERSE (R) while your vehicle is moving could
damage your transmission.
Also, use REVERSE (R), along with the parking brake, when turning
off your engine and parking your vehicle.
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Five Speed Manual Transmission (Without
Low Gear)
6 If you have a five
speed manual
transmission without
low gear
(RPO MG5),
this is your shift
pattern. Here’s how to
operate your
transmission:
FIRST GEAR (1) - Press the clutch pedal and shift into FIRST
GEAR
(1). Then, slowly let up on the clutch pedal as you press the
accelerator pedal.
You can shift into FIRST GEAR (1 ) when you’re going less than 20
mph (32 kdh). If you’ve come to a complete stop and it‘s hard to shift
into FIRST GEAR
(1). put the shift lever in NEUTRAL (N) and let up
on the clutch. Press the clutch pedal back down. Then shift into FIRST
GEAR
(1).
SECOND GEAR (2) - Press the clutch pedal as you let up on the
accelerator pedal and shift into SECOND GEAR
(2). Then, slowly let
up
on the clutch pedal as you press the accelerator pedal.
THIRD GEAR (3), FOURTH GEAR (4) and FIFTH GEAR (5) -
Shift into THIRD GEAR (3). FOURTH GEAR (4) and FIFTH GEAR
(5) the same way you do for SECOND GEAR (2). Slowly let up on the
clutch pedal
as you press the accelerator pedal.
Just before the vehicle stops, press the clutch pedal and the brake pedal,
and shift to NEUTRAL
(N).
0 To Stop - Let up on the accelerator pedal and press the brake pedal.
NEUTRAL (N) - Use this position when you start or idle your
engine.
REVERSE (R) - To back up, first press down the clutch pedal. Wait
about 5 seconds for the internal parts to stop spinning and then, shift
into REVERSE (R). Let up on the clutch pedal slowly while pressing
the accelerator pedal.
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NOTICE:
Shift to REVERSE (R) only after your vehicle is stopped.
Shifting to REVERSE
(R) while your vehicle is moving could
damage
your transmission.
Also, use REVERSE (R), 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
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.
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.
Manual Transmission Shift Speeds
If you have a five speed manual transmission with low gear (RPO MW3)
and one of the following engines, this chart shows when to shift to the next
higher gear for best fuel economy.
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Recommended Shift Speeds*
Five
Speed Manual Transmission with Low Gear
Acceleration Shift Speed MPH
(KW)
Engine
(VIN
CODE)
4.3L V6 (Z)
6.5L V8 (P)
4.3L V6 (Z)
6.SL V8 (P)
2 to 3
15 (24)
1 5 (24)
3 to 4
40 (64)
40 (64)
4 to 5
50 (80)
45 (72)
Cruise Shift Speed MPH (KM/H)
15 (24)
I 5 (24) 25-40
(40-64)
25-40
(40-64) 45-50
(72-80)
45 (72)
*LOW GEAR (1) is intended only for heavy loads and is not recommended
for normal driving.
If your speed drops below 20 mph
(32 km/h), or if the engine is not running
smoothly,
you should downshift to the next lower gear. You may have to
downshift two
or more gears to keep the engine running smoothly or for
good performance.
A CAUTION:
If you skip more than one gear when you downshift, you could
lose control of your vehicle. And you could injure yourself or
others. Don’t shift
down more than one gear when you
downshift.
NOTICE:
If you skip more than one gear when you downshift, or if you
race the engine when you downshift, you can damage the engine,
clutch or transmission.
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Leaving Your Vehicle With the Engine Running
(Automatic Transmission Models
Only)
A CAUTION:
It can be dangerous to leave your vehicle with the engine
running. Your vehicle could move suddenly if the shift lever
is
not fully in PARK (P) with the parking brake firmly set. If you
have four-wheel drive with a manual transfer case shift lever
and your transfer case is in
NEUTRAL (N), your vehicle will be
free to roll, even if your shift lever is in PARK
(P). So be sure the
transfer case
is in a drive gear - not in NEUTRAL (N). And, if
you leave the vehicle with the engine running, it could overheat
and even catch fire.
You or others could be injured. Don’t leave
your vehicle with the engine running unless you have to.
If you have to leave your vehicle with the engine running, be sure your
vehicle is in PARK (P) and your parking brake is firmly set before you leave
it. After you’ve moved the shift lever into the PARK (P) position, hold the
regular brake pedal down. Then. see
if you can move the shift lever away
from PARK (P) without first pulling
it toward you.
If
you can, it means that the shift lever wasn’t fully locked into PARK (P).
Torque Lock (Automatic Transmission)
If you are parking on a hill and you don’t shift your transmission into PARK
(P) properly, the weight of the vehicle may put too much force on the
parking pawl in the transmission.
You may find it difficult to pull the shift
lever out of PARK (P). This is called “torque lock.” To prevent torque lock,
set the parking brake and then shift into PARK (P) properly before you
leave the driver’s seat.
To find out how, see “Shifting Into PARK (P)” in the
Index.
When you are ready to drive, move the shift lever out
of PARK (P) before
you release the parking brake.
If “torque lock” does occur, you may need to have another vehicle push
yours
a little uphill to take some of the pressure from the transmission, so
you can pull the shift lever out of PARK (P).
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Parking Your Vehicle (Manual Transmission
Models Only)
Before you get out of your vehicle, put your manual transmission in
REVERSE (R), turn off the engine, and firmly apply the parking brake.
If you have four-wheel drive, be sure your transfer case is in a drive gear.
Your vehicle could roll if it isn't.
If you are parking on
a hill, or if your pulling a trailer, see "Parking on
Hills" or '"Towing a Trailer" in the Index.
Parking Over Things That Burn
1 A CAUTION:
Things that can burn could touch hot exhaust parts under your \
vehicle and ignite. Don't park over papers, leaves, dry grass
or
other things that can burn.
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Engine Exhaust
A CAUTION:
Engine exhaust can kill. It contains the gas carbon monoxide
(CO), which you can’t see or smell. It can cause unconsciousness
and death.
You might have exhaust coming in if:
Your exhaust system sounds strange or different.
Your vehicle gets rusty underneath.
Your vehicle was damaged in a collision.
Your vehicle was damaged when driving over high points on
the road or over road debris.
Repairs weren’t done correctly.
Your vehicle or exhaust system had been modified improperly.
If you ever suspect exhaust is coming into your vehicle:
Drive it only with all the windows down to blow out any CO;
and
Have your vehicle fixed immediately.
Running Your Engine While You’re Parked
(Automatic Transmission)
It’s better not to park with the engine running. But if you ever have to, here
are
some things to know.
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