1996 OLDSMOBILE BRAVADA Owners Manual

Scanning the Terrain
Off-road driving can take you over many different
kinds of terrain. You need to be familiar with the terrain
and its many different features. Here are some things
to consider.
Su$uce Condiriorzs. Off-roading can take you over
hard-packed dirt, gravel, rocks, grass, sand, mud, snow or
ice. Each of these surfaces affects the steering, acceleration
and braking of your vehicle
in different ways. Depending
upon the kind of surface
you are on, you may experience
slipping, sliding, wheel spinning, delayed acceleration,
poor traction and longer braking distances.
Surjiuce Obstacles. Unseen or hidden obstacles can be
hazardous.
A rock, log, hole, rut or bump can startle you if
you’re not prepared for them. Often these obstacles are
hidden by grass, bushes, snow or even the rise and fall of
the terrain itself. Here are some things to consider:
Is the path ahead clear?
Will the surface texture change abruptly up ahead?
Does the travel take you uphill or downhill? (There’s
more discussion of these subjects later.)
Will you have to stop suddenly or change
direction quickly? When
you drive over obstacles or rough terrain, keep
a
firm grip on the steering wheel. Ruts, troughs or other
surface features can jerk
the wheel out of your hands if
you’re not prepared.
When you drive over bumps, rocks, or other obstacles,
your wheels can leave the ground. If this happens, even
with one or two wheels,
you can’t control the vehicle as
well or at all.
Because you
will be on an unpaved surface, it’s
especially important to avoid sudden acceleration,
sudden turns or sudden braking.
In a way, off-road driving requires a different kind
of
alertness from driving on paved roads and highways.
There are no road signs, posted speed limits or signal
lights.
You have to use your own good judgment about
what is safe and what isn’t.
Drinking and driving can be very dangerous on any
road. And this is certainly true for off-road driving.
At
the very time you need special alertness and driving
skills, your reflexes, perceptions and judgment can be
affected by
even a small amount of alcohol. You could
have a serious
-- or even fatal -- accident if you drink
and drive or ride with a driver who has been drinking.
See “Drunken Driving”
in the Index.
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Driving on Off-Road Hills
Off-road driving often takes you up, down or across a
hill. Driving safely on hills requires good judgment and
an understanding of what your vehicle can and can‘t do.
There are some hills that simply can’t be driven, no
matter how well built the vehicle.
Many hills are simply too steep for any vehicle. If
you drive
up them, you will stall. If you drive
down them, you can’t control your speed.
If you
drive across them, you will roll over. You could be
seriously injured or killed.
If you have any doubt
about the steepness, don’t drive the hill.
Approaching a Hill
When you approach a hill, you need to decide if it’s one
of those hills that’s just too steep to
climb, descend or
cross. Steepness can be hard to judge. On
a very small
hill, for example, there may be a smooth, constant incline
with only
a small change in elevation where you
can easily see all the way to
the top. On a large hill, the
incline may get steeper as you near the top, but you may
not see this because the crest of the hill is hidden by
bushes, grass or shrubs.
Here are some other things to consider
as you approach
a hill.
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Is there a constant incline, or does the hill get sharply
steeper
in places?
Is there good traction on the hillside, or will the
surface cause tire slipping?
Is there a straight path up or down the hill so you
won’t have to make turning maneuvers?
Are there obstructions on the hill that can block
your
path (boulders, trees, logs or ruts)?
What’s beyond the hill?
Is there a cliff, an
embankment, a drop-off, a fence? Get out and
walk the
hill if you don’t know. It’s the smart way to
find out.
Is the hill simply too rough? Steep hills often have
ruts, gullies, troughs and exposed rocks because they
are more susceptible
to the effects of erosion.
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Driving Uphill
Once you decide you can safely drive up the hill, you
need
to take some special steps.
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Use a low gear and get a firm grip on the
steering wheel.
Get a smooth start up the hill and try to maintain
your speed. Don’t use more power than you need,
because you don’t want your wheels to start spinning
or sliding.
Try to drive straight up the hill if at all possible. If
the path twists and turns, you might want to find
;hn@h,w rQude.
Ease up on your speed as you approach the top
of the hill.
0 Attach a flag to the vehicle to make you more visible
to approaching traffic on trails or hills.
0 Sound the horn as you approach the top of the hill to
let opposing traffic know you’re there.
you more visible
to oncoming traffic.
0 Use your headlamps even during the day. They make
1 A CAUTION:
’hrning or driving across steep hills can be
dangerous. You could lose traction, slide
sideways, and possibly roll over. You could be
seriously injured or killed. When driving up hills,
always try to go straight up. Driving to the top (crest)
of
a hill at full speed can
cause an accident. There could be a drop-off,
embankment, cliff, or even another vehicle. You
could be seriously injured
or killed. As you near
‘---1 the top of a hill, slow down and stay alert.
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Q.’ What should I do if my vehicle stalls, or is about
A: If this happens, there are some things you should
to stall, and I can’t make it up the hill?
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do, and there are some things you must not do.
First, here’s what you
should do:
Push the brake pedal to stop the vehicle and keep
it
from rolling backwards. Also, apply the parking brake.
If your engine is still running, shift the transmission
to REVERSE (R), release the parking brake, and
slowly back down the hill in REVERSE
(R).
If your engine has stopped running, you’ll need to
restart
it. With the brake pedal depressed and the
parking brake still applied, shift the transmission to
PARK (P) and restart the engine. Then, shift
to
REVERSE (R), release the parking brake, and
slowly back down the hill as straight as possible
in
REVERSE (R).
As you are backing down the hill, put your left hand
on the steering wheel at the 12 o’clock position. This
way, you’ll be able to tell
if your wheels are straight
and maneuver as you back down. It’s best that you
back down the
hill with your wheels straight rather
than in the left or right direction. Turning the wheel
too far to the
left or right will increase the possibility
of a rollover. Here are some things
you
must not do if you stall, or are
about
to stall, when going up a hill.
Never attempt to prevent a stall by shifting into
NEUTRAL
(N) to “rev-up7’ the engine and regain
forward momentum. This won’t work. Your vehicle
will roll backwards very quickly and you could go
out
of control.
Instead, apply the regular brake to stop the
vehicle. Then apply the parking brake. Shift to
REVERSE (R), release the parking brake, and
slowly back straight down.
Never attempt to turn around if you are about to stall
when going up a
hill. If the hill is steep enough to
stall your vehicle, it’s steep enough to cause you to
roll over
if you turn around. If you can’t make it up
the hill, you must back straight down the hill.
Suppose, after stalling, I try to back down the hill
and decide
I just can’t do it. What should I do?
A: Set the parking brake, put your transmission in
PARK (P) and
turn off the engine. Leave the
vehicle and go get some help. Exit on the uphill
side and stay clear of the path the vehicle would
take if it rolled downhill.
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Driving Downhill
When off-roading takes you downhill, you’ll want to
consider
a number of things:
How steep is the downhill? Will I be able to maintain
vehicle control?
What’s the surface like? Smooth? Rough? Slippery?
Hard-packed dirt? Gravel?
Are there hidden surface obstacles? Ruts?
Logs? Boulders?
What’s at the bottom of the hill? Is there a hidden
creek bank or even
a river bottom with large rocks?
If you decide you can go down a hill safely, then try to
keep your vehicle headed straight down, and use
a low
gear. This way, engine drag can help your brakes and
they won’t have to do all the work. Descend slowly,
keeping your vehicle under control at all times.
Heavy braking when going down a hill can cause
your brakes to overheat and fade. This could cause loss
of control and a serious accident. Apply the
brakes lightly when descending a hill and use a low gear to keep vehicle speed under control.
Are there
some things I should not do when
driving down a hill?
A: Yes! These are important because if you ignore them
you could lose control and have
a serious accident.
When driving downhill, avoid turns that take you
across the incline
of the hill. A hill that’s not too
steep to drive down may be too steep
to drive across.
You could roll over if you don‘t drive straight down.
Never go downhill with the transmission in
NEUTRAL
(N). This is called “free-wheeling.” Your
brakes will have to do all the work and could
overheat and fade.
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&: Am I likely to stall when going downhill?
A: It’s much more likely to happen going uphill. But if
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it happens going downhill, here’s what to do.
Stop your vehicle by applying the regular brakes.
Apply the parking brake.
Shift to PARK
(P) and, while still braking, restart
the engine.
Shift back to a low gear, release the parking brake,
and drive straight down.
If
the engine won’t start, get out and get help.
Driving Across an Incline
Sooner or later, an off-road trail will probably go across
the incline of a hill.
If this happens, you have to decide
whether
to try to drive across the incline. Here are some
things
to consider:
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A hill that can be driven straight up or down may be
too steep to drive across. When you
go straight up or
down a hill,
the length of the wheel base (the
distance
from the front wheels to the rear wheels)
reduces the likelihood the vehicle will tumble end
over end.
But when you drive across an incline, the
much more narrow track width (the distance between
the left and right wheels) may not prevent the vehicle
from tilting and rolling over. Also, driving across an
incline puts more weight on the downhill wheels.
This could cause a downhill slide or a rollover.
Surface conditions can be a problem when you drive
across a hill. Loose gravel, muddy spots, or even wet
grass can cause your tires to slip sideways, downhill.
If the vehicle slips sideways, it can hit something
that
will trip it (a rock, a rut, etc.) and roll over.
Hidden obstacles can make the steepness
of the
incline even worse. If you drive across a rock with
the uphill wheels, or
if the downhill wheels drop into
a rut or depression, your vehicle can tilt even more.
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For reasons like these, you need to decide carefully
whether
to try to drive across an incline. Just because the
trail goes across the incline doesn’t mean you have to
drive it. The last vehicle to
try it might have rolled over.
Driving across an incline that’s too steep will
make
your vehicle roll over. You could be
seriously injured or killed.
If you have any doubt
about the steepness
of the incline, don’t drive
across it. Find another route instead.
Q: What if I’m driving across an incline that’s not
too steep, but
I hit some loose gravel and start to
slide downhill. What should
I do?
A: If you feel your vehicle starting to slide sideways,
turn downhill. This should help straighten out the
vehicle and prevent the side slipping. However, a
much better way to prevent this
is to get out and
“walk the course”
so you know what the surface is
like before you drive it.
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Stalling on an Incline
If your vehicle stalls when you’re crossing an incline, be
sure you (and your passengers) get out on the uphill
side, even
if the door there is harder to open. If you get
out
on the downhill side and the vehicle starts to roll
over, you’ll be right
in its path.
If you have to walk
down the slope, stay out of the path
the vehicle will take if it does roll over.
Getting out on the downhill (low) side of a vehicle
stopped across an incline is dangerous.
If the
vehicle rolls over, you could be crushed or killed.
Always get out on the uphill (high) side
of the
vehicle and stay well clear
of the rollover path.
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