2001 CHEVROLET CAVALIER heater

5-13
NOTICE:
When adding coolant, it is important that you
use only DEX
-COOL
(silicate-free) coolant.
If coolant other than DEX-COOL is added to
the system, premature engine, heater core or
radiator corrosion may result. In addition, the
engine coolant will require change sooner
-- at
30,000 miles (50 000 km) or 24 months,
whichever occurs first. Damage caused by the
use of coolant other than DEX
-COOL
is not
covered by your new vehicle warranty.
If there seems to be no leak, with the engine on, check to
see if the electric engine cooling fan is running. If the
engine is overheating, the fan should be running. If it
isn't, your vehicle needs service.
How to Add Coolant to the Coolant
Surge Tank
If you haven't found a problem yet, but the coolant level
isn't at the FULL COLD mark, add a 50/50 mixture of
clean, drinkable water and DEX
-COOL
coolant at
the coolant surge tank, but be sure the cooling system,
including the coolant surge tank pressure cap, is cool
before you do it. See ªEngine Coolantº in the Index for
more information.

5-15
CAUTION:
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 50/50 mixture of clean, drinkable water
and DEX
-COOL
coolant.
NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other parts.
So use the recommended coolant.
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.

6-24
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-COOL
engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX
-COOL
extended life coolant.
The following explains your cooling system and how
to add coolant when it is low. If you have a problem
with engine overheating, see ªEngine Overheatingº
in the Index.
A 50/50 mixture of clean, drinkable water and
DEX
-COOL
coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning lights and gages work as
they should.
NOTICE:
When adding coolant, it is important that you
use only DEX
-COOL (silicate-free) coolant.
If coolant other than DEX-COOL is added to
the system, premature engine, heater core or
radiator corrosion may result. In addition, the
engine coolant will require change sooner
-- at
30,000 miles (50 000 km) or 24 months,
whichever occurs first. Damage caused by the
use of coolant other than DEX
-COOL is not
covered by your new vehicle warranty.

6-25 What to Use
Use a mixture of one-half clean, drinkable water and
one
-half DEX-COOL
coolant which won't damage
aluminum parts. If you use this coolant mixture,
you don't need to add anything else.
CAUTION:
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 50/50 mixture of clean, drinkable water
and DEX
-COOL
coolant.
NOTICE:
If you use an improper coolant mixture, your
engine could overheat and be badly damaged.
The repair cost wouldn't be covered by your
warranty. Too much water in the mixture can
freeze and crack the engine, radiator, heater core
and other parts.
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.

6-63
Fuse Usage
STOP/HZD Stop Lamps, Hazard Lamps
Blank Not Used
Blank Not Used
RR DEFOG Rear Window Defogger
PWR ACC Power Door Locks
Blank Not Used
Blank Not Used
Blank Not Used
O
2 HTR Oxygen Sensor Heater
HVAC Climate Control System
WIPER Windshield Wiper
BCM Body Control Module
AMPL Audio Amplifier
PWR WDO Power Windows, Sunroof
DRL Daytime Running Lamps (Relay)Engine Compartment Fuse Block
The engine compartment fuse block is located on
the driver's side of the engine compartment.
Lift off the cover to check the fuses. See ªEngine
Compartment Overviewº in the Index for more
information on location.

6-64
Fuse Usage
IGN Ignition Switch Circuits
BATT 1 Exterior Lamps, Power Outlet,
Horn, Audio Amplifier
BATT 2 Rear Defogger,
Power Locks, Stoplamps
ABS Anti
-Lock Brake System
COOLING FAN Engine Cooling Fan
PCM/HVAC Powertrain Control Module,
Heater and A/C Blower
BLO Heater and A/C Blower
PCM Powertrain Control Module
A/C A/C Compressor
FUEL PUMP Fuel Pump
HEATER BLOWER Heater and A/C Blower
Replacement Bulbs
Lamps Bulb Number
Back
-Up Lamps 912. . . . . . . . . . . . . . . . . . . . . . . . . .
Front Parking/Turn Signal Lamps 3157. . . . . . . . . . .
Center High
-Mounted Stoplamp
Interior Mounted 1141. . . . . . . . . . . . . . . . . . . . . . .
Spoiler Mounted 912. . . . . . . . . . . . . . . . . . . . . . . .
Halogen Headlamps, High/Low Beam 9007. . . . . . .
Tail/Turn Signal Lamps 3057. . . . . . . . . . . . . . . . . .
Turn Signal Lamps (Rear Sedan) 3057. . . . . . . . . .
Dome/Reading Lamp (If Equipped)
Base Model 912. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Up
-Level Model 168 & 906. . . . . . . . . . . . . . . . . . .
Sunroof Model 912 (Dome). . . . . . . . . . . . . . . . . . .
212
-2 (Mirror)