1993 CHEVROLET BLAZER Owners Manual

Your Driving and the Road
Three important considerations have to do with weight:
Weight of the Trailer
How heavy can a trailer safely be?
For utility vehicles, a trailer should never weigh more than 7,000 pounds
(31 75.2 kg).
For wagon models, a trailer should never weigh more than 10,000
pounds (6125.6 kg).
But even that can be too heavy. It depends on how you plan to use your rig.
For example, speed, altitude, road grades, outside temperature, \
and how
much your vehicle is used to pull a trailer all are important\
. And,
it can also
depend on any special equipment that you have
on your vehicle. You can
ask your dealer for our trailering information or advice, or y\
ou can write us at
the address listed in your Warranty and Owner Assistance Inform\
ation
Booklet.
In Canada, write
to:
General Motors of Canada Limited
Customer Assistance Center
1908 Colonel Sam Drive
Oshawa, Ontario
L1H 8P7
Weight of the Trailer Tongue
The tongue load (A) of any trailer is an important weight to measure because
it affects the total, gross weight of your vehicle. The gross vehicle weight
(GVW) includes the curb weight
of the vehicle, any cargo you may carry in it,
and the people who will be riding in the vehicle. And if you will tow a trailer,
you must add the tongue load to the GVW because your vehicle will be
carrying that weight, too. See “Loading Your Vehicle” in the Index for more
information about your vehicle’s maximum load capacity.
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A B
AN490002
If you’re using a “dead-weight” hitch, the trailer tongue (A) should weigh \
10%
of the total loaded trailer weight (8). If you have a “weight-distributing” hitch,
the trailer tongue
(A) should weigh 12% of the total loaded trailer weight (B).
After you’ve loaded your trailer, weigh the trailer and then the tongue,
separately, to see if the weights are proper.
If they aren’t, you may be able
to get them right simply by moving some items around in the trailer.
Total Weight on Your Vehicle’s Tires
Be sure your vehicle’s tires are inflated to the limit for cold tires. You’ll find
these numbers on the Certification label at the rear edge of \
the driver’s
door
(or see “Loading Your Vehicle” in the Index). Then be sure you don’t go over
the
GVW limit for your vehicle.
Hitches
It’s important to have the correct hitch equipment. Crosswinds, large trucks
going by, and rough roads are a few reasons why you’ll need the right hitch,
Here are some rules to follow:
If your vehicle has a step bumper and you are going to use a ball-type
hitch, remove the pad and cut holes in it to match the hitch and safety
chain holes in the bumper.
If you’ll be pulling a trailer with a utility model that, when loaded, will
weigh more than
3,000 pounds (1361 kg); or with a wagon model that
when loaded, will weigh more than
4,000 pounds (1 800 kg), be sure to
use a properly mounted weight-distributing hitch and sway control
of the
proper size. This equipment
is very important for proper vehicle loading
and good handling when you’re driving.
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Your Driving and 0% Road
Will you have to make any holes in the body of your vehicle when you
install a trailer hitch?
If you do, then be sure to seal the holes later
when you remove the hitch.
If you don’t seal them, deadly carbon
monoxide
(CO) from your exhaust can get into your vehicle (see “Carbon
Monoxide” in the Index). Dirt and water can, too.
Safety Chains
You should always attach chains between your vehicle and your trail\
er. Cross
the safety chains under the tongue of the trailer
so that the tongue will not
drop to the road
if it becomes separated from the hitch. Instructions about
safety chains may be provided by the trailer manufacturer. Follow the
manufacturer’s recommendation
for attaching safety chains. Always leave just
enough slack
so you can turn with your rig. And, never allow safety chains to
drag on the ground.
Trailer Brakes
If your trailer weighs more than 1,000 pounds (450 kg) loaded, then it needs
its own brakes-and they must be adequate. Be sure
to read and follow the
instructions for the trailer brakes
so you’ll be able to install, adjust and
maintain them properly.
Don’t tap into your vehicle’s brake system if the trailer’s brake system will use
more than
0.02 cubic inch (0.3 cc) of fluid from your vehicles master cylinder.
If it does, both braking systems won’t work well. You could even lose your
brakes.
Will the trailer brake parts take 3,000 psi (20 650 kPa) of pressure? If
not, the trailer brake system must not be used with your vehi\
cle.
If everything checks out this far, then make the brake fluid tap at the
port on the master cylinder that sends fluid
to the rear brakes. But don’t
use copper tubing for this.
If you do, it will bend and finally break off.
Use steel brake tubing.
Driving with a Trailer
Towing a trailer requires a certain amount of experience. Before setting out
for the open road, you’ll want
to get to know your rig. Acquaint yourself with
the feel of handling and braking with the added weight of the trailer. And
always keep in mind that the vehicle you are driving is now a good deal
longer and not nearly
so responsive as your vehicle is by itself.
Before you start, check the trailer hitch and platform, safety \
chains, electrical
connector, lights, tires and mirror adjustment.
If the trailer has electric brakes,
start your vehicle and trailer moving and then apply the trail\
er brake controller
by hand to be sure the brakes are working. This lets vou check your
electrical connection at the same time.
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I
If you have a rear-most window open and you pull a trailer with \
your
can’t see or smell
CO. It can cause unconsciousness or death (See
“Engine Exhaust” in the Index).
To maximize your safety when towing
a trailer:
- vehicle, carbon monoxide (CO) could come into your vehicle. You
Have the exhaust system inspected for leaks and make
Keep the rear-most windows closed.
If exhaust does come into your vehicle through a window in the
rear or another opening, drive with your front, main heating or
cooling system
on and with the fan on any speed. This will
bring fresh, outside air into your vehicle.
Do not use RECIR
because it only recirculates the air inside your vehicle. See
“Comfort Controls” in the Index.
necessary repairs before starting on your trip.
During your trip, check occasionally to be sure that the load is secure, and
that the lights and any trailer brakes are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead as you would when
driving your vehicle without a trailer. This can help you avoid situations that
require heavy braking and sudden turns.
Passing
You’ll need more passing distance up ahead when you’re towing a tr\
ailer.
And, because you’re
a good deal longer, you’ll need to go much farther
beyond the passed vehicle before you can return to your lane.
Backing Up
Hold the bottom of the steering wheel with one hand. Then, to move the
trailer left, just move your hand to the left.
To move the trailer to the right,
move your hand to the right. Always back up slowly and,
if possible, have
someone guide you.
Making Turns
When you’re turning with a trailer, make wider turns than n\
ormal. Do this so
your trailer wheels won’t strike soft shoulders, curbs, road signs, trees, or
other objects. Avoid jerky or sudden maneuvers. Signal well in advance.
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Your Driving and the Road
Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle has to have a different turn signal
flasher and extra wiring. The green arrows on your instrument \
panel will flash
whenever you signal a turn
or lane change. Properly hooked up, the trailer
lights will also flash, telling other drivers you’re about
to turn, change lanes,
or stop.
When towing a trailer, the green arrows on your instrument pan\
el will flash for
turns even
if the bulbs on the trailer are burned out. Thus, you may think \
drivers behind you are seeing your signal when they are not.
It’s important to
check occasionally to be sure the trailer bulbs are still working.
Driving on Grades
Reduce speed and shift to a lower gear before you start down a long or
steep downgrade. If you don’t shift down, you might have to use your brakes
so much that they would get hot and no longer work well.
On
a long uphill grade, shift down and reduce your speed to 45 mph (70
kmlh) or less to reduce the possibility of engine and transmission overheating.
If you have an automatic transmission, you should use D (or, as you need to,
a lower gear) when towing a trailer. Operating your vehicle in D when towing
a trailer will minimize heat buildup and extend the
life of your transmission.
Or,
if you have a manual transmission with fifth gear and you are to\
wing a
trailer, it’s better not
to use fifth gear, just drive in fourth gear (or, as you
need to, a lower gear).
Parking on Hilk
You really should not park your rig on a hill. If something goes wrong, your
rig could start
to move. People can be injured and both your vehicle and the
trailer can be damaged.
But
if you ever have to park your rig on a hill, here’s how to do it:
1. Apply your regular brakes, but don’t shift into P (Park) yet, or into gear
for a manual transmission.
2. Have someone place chocks under the trailer wheels.
3, When the wheel chocks are in place, release the regular brakes\
until the
4. Reapply the regular brakes. Then apply your parking brake, and \
then
chocks absorb the load.
shift
to P (Park), or R (Reverse) for a manual transmission.
5. If you have a four-wheel-drive vehicle, be sure the transfer case \
is in
a
drive gear-not in
N (Neutral).
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. .
6. Release the regular brakes.
CAUTION
It can be dangerous to get out of your vehicle if the shift lever is no
fully in
P (Park) wi-. the parking brake firmly set. Your vehicle can
roll.
If you have left the engine running, the vehicle can move suddenl\
y.
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 foll\
ow.
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 in N (Neutral).
If you are parking on a hill, or if you’re pulling a trailer, also see
I “Parking On Hills” in the Index. I
When You Are Ready to Leave After Parking on a Hill
1. Apply your regular brakes and hold the pedal down while you:
Start your engine.
Shift into a gear; and
Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and stow the chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you’re pulling a \
trailer. .See
the Maintenance Schedule for more on this. Things that are especially
important in trailer operation are automatic transmission fluid (don’t overfill),
engine oil, axle lubricant, belts, cooling system, and brake ad\
justment. Each
of these is covered in this manual, and the Index will help you find them
quickly.
If you’re trailering, it’s a good idea to review these sections before
you start your trip.
Check periodically to see that all hitch nuts and bolts are tight.
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Yiiur Driving and the Road
mailer Wiring Harness
Power Winches
See “Trailer Wiring Harness” in the Index.
If you wish to use a power winch on your vehicle, only use it when your
vehicle
is stationary or anchored.
transmission may be damaged.
Use the regular brakes, set the parking brake or block the wh\
eels to keep
your vehicle from rolling.
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Here you’ll find what to do about some problems that can occur on the road.
Hazard Warning Flashers ........................................................................\
............. 5-2
Other Warning Devices ........................................................................\
................. 5-3
Jump Starting ........................................................................\
................................ 5-3
Towing Your Vehicle, ........................................................................\
..................... 5-7
Engine Overheating ........................................................................\
....................... 5-8
Engine Fan Noise ........................................................................\
....................... 5-1 6
If a Tire Goes Flat ........................................................................\
...................... 5-16
Changing a Flat
Storing the Jack
If You’re Stuck: In
Tire ........................................................................\
............... 5-16
and
Tire. ........................................................................\
...... 5-30
Sand, Mud, Ice or Snow ................................................... 5-31
5-1