1998 CHEVROLET BLAZER service

Downloaded from www.Manualslib.com manuals search engine Highway Hypnosis
Is’ there actually such a condition as “highway hypnosis”?
Or is it just plain falling asleep at the wheel? Call it
highway hypnosis, lack
of awareness, or whatever.
There is something about an easy stretch
of road with
the same scenery, along with the hum
of the tires on the
road, the drone of the engine, and the rush of the wind
against the vehicle that can make you sleepy. Don’t let it
happen to you!
If it does, your vehicle can leave the
road in
less than a second, and you could crash and
be injured.
What can you do about highway hypnosis? First, be
aware that it can happen.
Then here are some tips:
Make sure your vehicle is well ventilated, with a
comfortably cool interior.
Keep your eyes moving. Scan the road ahead and
to the sides. Check your mirrors and your
instruments frequently.
Hill and Mountain Roads
Driving on steep hills or mountains is different from
driving in flat or rolling terrain.
If you drive regularly in steep country, or if you’re
If You get Pull Off the road into a service planning to visit there, here are some tips that can make
Or parking area and take a nap, get Some exercise, Or your trips safer and more enjoyable. (See “Off-Road
both. For safety, treat drowsiness on the highway as
Driving,7 in the Index for about driving
an emergency.
off-road.)

Downloaded from www.Manualslib.com manuals search engine 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 store 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, belt, cooling system
and brake adjustment. 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.
Trailer Wiring H-T--- ess
The light duty trailer wir is a six-wire harness
assembly. The optional heavy-duty trailer wiring
is an
eight-wire harness assembly. The harnesses are stored under the vehicle, along the passenger-side frame
crossmember on two-door vehicles or on the driver’s side
corner frame rear crossmember on four-door vehicles. The
heavy-duty trailer wiring has a 30-amp feed wire with
an
inline fuse located by the junction block. See
“Fuses and Circuit Breakers” in the Index. Both
harnesses have
no connector and should be wired by a
qualified electrical technician. The technician
can use
the following color code chart when connecting the
wiring harness to your trailer.
0
0
0
0
0
0
0
0
Dark Blue: Use for electric trailer brakes or
auxiliary wiring.
Red: Use for battery charging; it connects to the
starter solenoid (eight-wire harness only).
Light Green: Back-up lamps (eight-wire
harness only).
Brown: Taillamps and parking lamps. Yellow: Left stoplamp and turn signal.
Dark Green: Right stoplamp and turn signal.
White (Heavy Gage): Ground wire.
White (Light Gage): Auxiliary stoplamp.
Securely attach the harness to the trailer, then tape or
strap
it to your vehicle’s frame rail. Be sure you leave
it loose enough
so the wiring doesn’t bend or break,
but not
so loose that it drags on the ground. Store the
harness in its original place. Wrap the harness together
and tie it neatly
so it won’t be damaged.

Downloaded from www.Manualslib.com manuals search engine 9. Attach the cable at least
18 inches (45 cm) away
from the dead battery,
but not near engine parts
that move.
The electrical
connection is just as
good there, but the
chance
of sparks getting
back to the battery is
much less.
10. Now start the vehicle with the good battery and run
the engine for awhile.
11. Try to start the vehicle with the dead battery. If it
won’t start after a few tries, make sure all
connections are good. If it still won’t start, it
probably needs service.
Fans or other moving engine parts can injure you
badly. Keep your hands away from moving parts once the engiv is running.
12. Remove the cables in reverse order to prevent
electrical shorting. Take care that they don’t touch
each other or
any other metal.
A. Heavy Metal Engine Part
B. Good Battery
C. Dead Battery
5-6

Downloaded from www.Manualslib.com manuals search engine Towing Your Vehicle
Try to have a GM dealer or a professional towing
service tow your vehicle. See “Roadside Assistance”
in
the Index.
If your vehicle
has been changed since it was
factory-new by adding things like fog lamps, aero
skirting, or special tires and wheels, these instructions
may not be correct.
Before you do anything, turn
on the hazard
warning flashers.
When you call, tell the towing service:
Whether your vehicle has rear-wheel drive,
four-wheel drive or all-wheel drive.
The make, model and year of your vehicle.
Whether you can move the shift lever for the
transmission and
shift the transfer case, if you
have one.
If there was an accident, what was damaged.
When the towing service arrives, let the tow operator
know
that this manual contains these towing
instructions. The operator may want to see them.
5-7

Downloaded from www.Manualslib.com manuals search engine When your vehicle is being towed, have the ignition key
turned to the OFF position. The steering wheel should
be clamped in a straight-ahead position with
a clamping
device designed for towing service.
Do not use the
vehicle’s steering column lock for this. The transmission
should be in
NEUTRAL (N) and the transfer case, if you
have one, should be in 2HI. The parking brake should
be released.
If your vehicle has a floor-mounted shifter and no
electrical power, the electrical solenoid lock must be
overridden to shift from PARK
(P) to NEUTRAL (N).
Follow these steps:
1. Push the base of the shift lever boot forward with
your thumb.
2. Lift the boot and find the white solenoid lever.
3. Move the solenoid lever
toward the driver’s side
to unlock
it.
4. While holding the solenoid lever in the unlock
position, press
the shift lever button and shift into
NEUTRAL
(N).
5. Release the solenoid lever and snap the boot back
into place.
Don’t have your vehicle towed on the drive wheels
unless you must. If the vehicle must be towed on the
drive wheels, be sure to follow the speed and distance
restrictions later
in this section or your transmission will
be damaged. If these limitations must be exceeded, then
the drive wheels have to be supported on a dolly.
5-9

Downloaded from www.Manualslib.com manuals search engine If No Steam Is Coming From Your Engine
If you get the overheat warning but see or hear no
steam, the problem may not be too serious. Sometimes
the engine can get a little too hot when you:
Climb a long hill on a hot day.
Stop after high-speed driving.
Idle for long periods in traffic.
0 Tow a trailer. See “Driving on Grades” in the Index.
If you get the overheat warning with no sign of steam,
try this for a minute
or so:
1. Turn off your air conditioner.
2. Turn on your heater to full hot at the highest fan
speed and open the window
as necessary,
3. If you’re in a traffic jam, shift to NEUTRAL (N);
otherwise, shift to the highest gear while
driving
-- DRIVE (D) or THIRD (3) for
automatic transmissions. If you no
longer have
the overheat warning, you can
drive. Just
to be safe, drive slower for about 10 minutes.
If the warning doesn’t come back on, you can
drive normally.
If the warning continues, pull over, stop, and park your
vehicle right away.
If there’s still no sign
of steam, push the accelerator until
the engine speed
is about twice as fast as normal idle
speed. Bring the engine speed back to normal idle speed
after two or three minutes. Now see if the warning stops.
But then,
if you still have the warning, turn ofSthe
engine
and get everyone out of the vehicle until it
cools down.
You may decide not to
lift the hood but to get service
help right away.
5-13

Downloaded from www.Manualslib.com manuals search engine A CAUTION:
Heater and radiator hoses, and other engine
parts, can be very hot. Don’t touch them.
If you
do, you can be burned.
Don’t run the engine
if there is a leak. If you run
the engine,
it could lose all coolant. That could
cause an engine fire, and you could be burned.
Get any leak fixed before you drive the vehicle.
NOTICE:
Engine damage from running your engine
without coolant isn’t covered
by your warranty.
If there seems to be no leak, start the engine again. See
if the engine cooling fan speed increases when idle
speed is doubled by pushing the accelerator pedal down.
If it doesn’t, your vehicle needs service. Turn off
the engine.
How to Add Coolant to the Coolant
Recovery Tank
If you haven’t found a problem yet, but the coolant level
isn’t at the
ADD mark, add a 50/50 mixture of clean
water (preferably distilled) and DEX-COOL@ engine
coolant at the coolant recovery tank. (See “Engine
Coolant” in the Index for more information.)
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mixture will. Your vehicle’s coolant
warning system is set for the proper coolant
mixture. With plain water or the wrong mixture,
your engine could get too hot but you wouldn’t
get the overheat warning. Your engine could
catch fire and you or others could be burned.
Use a
50EO mixture of clean water and
DEX-COOL@ coolant.
5-15

Downloaded from www.Manualslib.com manuals search engine Section 6 Service and Appnara-- ~2 Care
Here you will find information about the care of your vehicle. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There is also technical information about your
vehicle, and a part devoted to its appearance care.
6-2
6-3
6-5
6-5
6-7
6-8
6-10
6- 14
6-15
6-1 9
6-20
6-2
1
6-22 6-23
6-26 6-27
6-27
Service
Fuel
Fuels
in Foreign Countries
Filling Your Tank
Filling a Portable Fuel Container
Checking Things Under the Hood
Engine Oil
Air Cleaner
Automatic Transmission Fluid
Manual Transmission Fluid
Hydraulic Clutch
Rear Axle
Four-wheel Drive
Engine Coolant
Radiator Pressure Cap
Thermostat Power Steering Fluid 6-28
6-29
6-32
6-33
6-38
6-40
6-49
6-50
6-52
6-54
6-57
6-58
6-58
6-58
6-64 6-64
6-65 Windshield Washer Fluid
Brakes
Battery
Bulb Replacement
Windshield Wiper Blade Replacement
Tires
Appearance Care
Cleaning the Inside of Your Vehicle
Care
of Safety Belts
Cleaning the Outside
of Your Vehicle
Appearance Care Materials Chart
Vehicle Identification Number (VTN)
Service Parts Identification Label
Electrical System
Replacement Bulbs Capacities and Specifications
Air Conditioning Refrigerants