1994 CHEVROLET BLAZER heater

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.
Tow a trailer.
If
you get the overheat warning with no sign of steam, try this for a minute
or so:
1. If you have an air conditioner, turn it off.
2. Turn on your heater to full hot at the highest fan speed and open the
3. If you’re in a traffic jam, shift to “N” (Neutral).
window as
necessary.
If
you no longer have the overheat warning, you can drive. Just to be safe,
drive slower for about
ten 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 OFF THE 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.
When
you decide it’s
safe to
lift the hood,
here’s what you’ll see:
A. Coolant recovery
B. Radiator pressure
C. Engine fan tank
cap
If the
coolant inside the coolant recovery tank is boiling, don’t do anything
else until
it cools down.
5-12

Downloaded from www.Manualslib.com manuals search engine B'
The coolant level should be at or above the ADD mark. If it isn't, you may
have a leak
in the radiator hoses, heater hoses, radiator, water pump or
somewhere else
in the cooling system.
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 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 or above
the
ADD mark, add a 50/50 mixture of clean water (preferably distilled)
and a proper antifreeze at the coolant recovery tank. (See "Engine Coolant"
in the Index for more information about the proper coolant mix.)
5-13

Downloaded from www.Manualslib.com manuals search engine NOTICE:
In cold weather, water can freeze and crack the engine, radiator, \
heater core
and other parts. Use the recommended coolant.
When the coolant in the coolant recovery tank is at or above the the ADD
mark, start your vehicle.
If the overheat warning continues, there’s one more thing you can try. You
can add the proper coolant mix directly to the radiator but be sure the
cooling system is cool before you do it.

Downloaded from www.Manualslib.com manuals search engine When to Change Engine Oil
See if any one of these is true for you:
Most trips are less than 4 miles (6 km).
It’s below freezing outside and most trips are less than 10 miles (I 6 km).
0 The engine is at low speed most of the time (as in door-to-door
delivery, or
in stop-and-go traffic).
You tow a trailer often.
0 Most trips are through dusty places.
0 The vehicle is frequently operated off-road.
If any one of these is true for your vehicle, then you need to change your oil
andfilter every 3,000 miles (5 000 km) or 3 months - whichever comes
first.
If none
of them is true, change the oil every 7,500 miles (12 500 km) or
12 months - whichever comes first. Change the filter at the first oil change
and at every other oil change after that.
Four-wheel Drive Remote Oil Filter
If your vehicle has four-wheel drive, you will have a remote oil filter
located under the hood. It is mounted to the front left inner fender, behind
the headlights.
Engine Coolant Heater (Engine Block Heater)
An engine coolant heater can be a big help if you have to park outside in
very cold weather, 0°F (-18°C) or colder. If your vehicle has this option,
see “Engine Coolant Heater
” in the Index.
What to Do with Used Oil
Did you know that used engine oil contains certain elements that may be
unhealthy for your skin and could even cause cancer? Don’t let used oil stay
on your skin for very long. Clean your skin
and nails with soap and water,
or
a good hand cleaner. Wash or properly throw away clothing or rags
containing used engine oil. (See
the manufacturer’s warnings about the use
and disposal of oil products.)
Used oil can be
a real threat to the environment. If you change your own oil,
be sure to drain all free-flowing oil from
the filter before disposal. Don’t
ever dispose of oil
by putting it in the trash, pouring it on the ground, into
sewers, or into streams or bodies of water. Instead, recycle
it by taking it to
a place that collects used oil. If you have a problem properly disposing of
your used oil, ask your dealer,
a service station or a local recycling center
for help.
6-13

Downloaded from www.Manualslib.com manuals search engine I NOTICE:
If you use an improper coolant mix, your engine could overheat
and be badly damaged. The repair cost wouldn’t be covered by
your warranty.
Too much water in the mix can freeze and crack
the engine, radiator, heater core and other parts.
Some conditions, such as air trapped in the cooling system, can affect the
coolant level in the radiator. Check the coolant level when the engine
is cold
and follow the steps under “Adding Coolant” for
the proper way to add
coolant.
If you have to add coolant more than four times a year, have your dealer
check your cooling system.
NOTICE:
If you use the proper coolant, you don’t have to add extra
inhibitors or additives which claim to improve the system. These
can be harmful.
Adding Coolant
To Check Coolant
When your engine is cold, the coolant level should be at “ADD,” or a little
higher. When your engine
is warm, the level should be up to “FULL HOT,”
or a little higher.
To Add Coolant
If you need more
coolant, add the
proper mix
at the
coolant recovery tank.
6-24

Downloaded from www.Manualslib.com manuals search engine INTERIOR LAMPS
Ash Tray Lamp
Courtesy Lamp
Dome Lamp Dome Lamp (Rear)
Four-wheel Drive Indicator
Heater
& AC Control
Instrument Panel Compartment Lamp
Overhead Console
Dome Lamp (Front)
Reading Lamps
Rearview Mirror Lamps
Sunshade Vanity Mirror Lamps
Underhood Lamp
161
1003
21 1-2
561
161
37
1003
211-2 194
2 12-2
7065 93
Instrument Cluster Lamps
NOTE:
A PC part number indicates that the bulb and base are one
assembly and must be replaced as
such.
Anti-lock Brake Warning Indicator?
(Utility Models)
Anti-lock Brake Warning Indicator$
(Utility Models)
Brake System Warning Indicator?
Brake System Warning Indicator$
Check Gages Indicator?
Daytime Running Lights Indicator’f
Daytime Running Lights Indicator$
Charging System Indicator?
High Beam Indicator?
High Beam Indicator$
Instrument Cluster Illumination?
Malfunction Indicator Lamp (Service
Engine Soon)?
1
1
1
1
1
I
1
1
1
6
1
PC74
PC 194
PC74
PC 194
PC74
PC74
PC 194
PC74
PC74
PC 194
PC168 PC74
6-64

Downloaded from www.Manualslib.com manuals search engine NAME
INST LPS
PWR ACC
HORN-DM
BATT
STOP-HAZ
TAIL LMPS
ECM B
CIRCUITS PROTECTED
FUSE CIRCUIT
BREAKER
Instrument Panel Lights,
Headlight Warning Buzzer,
Rear Defogger Switch Light,
Four-wheel Drive Indicator
Light, RR Wiper Switch
Lamp, Fog Lamp Switch
Light, Electronic Shift Pnl
Lamps
Power Door Locks, Rear
Defogger, Electric Shift
Transfer Case, Power Seat
Horn, Dome Lights, Courtesy
20 Amp
Lights, Fog Lamp Relay,
Outside Rearview Mirror,
Liftgate Release Solenoid,
ISRV
& Lighted Vanity
Mirror, IP Compr Lamps, Cig
Lighter
IGN-GAGES Indicator Lights and Gages,
Rear Defogger Relay, Cruise
Control, Four Wheel Drive
Indicator Light, Rear
Defogger Timer, Seat Belt
Timer,
02 Sensor, VTC Relay,
Auto Trans, RR Defog
Switch,
0 Spd Warning
(Export),
DRL Relay, ISRV
and Vanity
Stop Lights, Hazard Flasher
Warning Lights, Chime
Module
Light Switch, Tailpark
Lights, Digital Cluster,
License Lamp
TURN-B/U Turn Signals
& Backup Lights 15 Amp
HEATER A/C Heating and Air Conditioning
25 Amp
RADIO Radio, Rear Wiper, Rear
15 Amp
Washer
Engine Control Module, Fuel
15 Amp
Pump
5 Amp
30 Amp
20 Amp
15 Amp
20 Amp
6-67

Downloaded from www.Manualslib.com manuals search engine Driving Across an Incline
............................................. 4-21
After Off-Road Driving
........................................ 4-24
AtNight
.................................................... 4-24
BackingUp
.................................................. 4-41
Defensive
.................................................... 4-2
Downhill
.................................................... 4-19
Freeway
..................................................... 4-28
Guidelines
................................................... 4-12
Highway Hypnosis
............................................ 4-30
Hydroplaning
................................................ 4-26
InBlizzard
................................................... 4-34
InCity
...................................................... 4-27
In Mud. Sand. Snow. Or Ice
................................ 4-22. 5-32
InRain
...................................................... 4-25
InWater
..................................................... 4-23
LossofControl
............................................... 4-11
Nightvision
................................................. 4-25
Off-Roading
................................................. 4-13
On Hill and Mountain Roads
.................................... 4-30
On Off-Road Hills
............................................ 4-16
OnSnoworIce
............................................... 4-32
Passing
..................................................... 4-10
Skidding
.................................................... 4-12
Stuck
in Deep Snow ...................................... 4-32. 5-32
Throughwater
.......................................... 2-19. 4-23
Uphill
...................................................... 4-17
Winter
...................................................... 4-32
With
a Trailer ................................................ 4-37
DrunkenDriving
................................................. 4-2
Electrical System Accessory Power Outlet
........................................ 2-56
Add-on Equipment
........................................... 6-60
Endgate ........................................................ 2-8
Electric Glass Release ........................................... 2-9
Mounted Spare Tire Carrier
..................................... 2-10
Adding Coolant
.......................................... 5-1 3. 6-24
Aircleaner
.................................................. 6-14
Coolant (Block) Heater
................................. 2-19 3.5, 6-13
Coolant
................................................ 6-23. 6-63
Coolant Temperature Gage
...................................... 2-70
Exhaust ..................................................... 2-29
FanNoise
................................................... 5-18
Identification
................................................. 6-62
Oil (See “Oil”)
Overheating
.................................................. 5-11
RunningWhileParked
......................................... 2-30
Starting
..................................................... 2-17
Equipment, Add-on ............................................. 6-41
Exhaustsystem ................................................. 6-38
Engine
3