heating CHEVROLET CORVETTE 1998 5.G User Guide

Downloaded from www.Manualslib.com manuals search engine When adjusting the temperature, start with a driver-set
temperature of
73°F (23 "C) until you determine your
comfort zone. If you choose
60°F (16"C), the system
will remain at maximum cooling and will not
automatically adjust fan speed or air delivery. If you
choose
90°F (32"C), the system will remain at
maximum heating and will not automatically adjust fan
speed or air delivery. Choosing either maximum setting
will not cause the system to heat or cool any faster.
Turning the knob past either maximum setting has no
effect on the operation of the system.
Passenger Temperature Offset
The PASSENGER knob changes the temperature on the
passenger's side of the vehicle. When the knob is in the
12 o'clock position, the passenger's temperature is the
same as the driver's. Turn the knob to the right for
warmer air
on the passenger's side, to the left for cooler
air. If the driver-set temperature is set at
60°F (1 6 " C) or
90 OF (32 " C), turning the passenger knob has no effect
because the system is locked at a maximum setting.
Automatic Operation
Press the AUTO button to place the entire system in the
automatic mode. After a five second display of the current settings, only the word
AUTO and the outside
temperature will be shown on the digital display. The
system will operate to achieve your comfort set
temperature as quickly as possible. If you have set the
driver temperature at
60°F (16°C) or 90°F (32"C), the
system will not operate automatically until a different
temperature is selected. The AUTO control system
works best with the windows up and the removable roof
installed or the convertible top up.
A Typical Cold Weather Example:
Your vehicle has been parked outside overnight in cold
weather (below
32 OF/ 0 " C) and you have set the driver
temperature at
73°F (23°C) and have selected the AUTO
mode. The system will automatically adjust the
temperature output to maximum heating. The fan will start
at a low speed. This is to avoid blowing cold
air into the
vehicle. The length of the delay depends on the amount of
time since the engine was last started, the outside
temperature and the engine coolant temperature. As the
coolant warms up, the fan speed will gradually increase.
Air will flow to the floor with some air to the windshield
to prevent fogging under most normal conditions.
3-5

Downloaded from www.Manualslib.com manuals search engine As the interior of the vehicle warms up to your comfort
set temperature, the fan speed will decrease and the
temperature output may become cooler.
If the interior
temperature continues to warm up due to heating from
the sun or outside temperature increases, the system
may switch to other air delivery modes (typically
DEFOG or BI-LEVEL).
A ljpical Hot Weather Example:
Your vehicle has been parked outside all day in hot
weather (above
7OoF/ 21 O C) and you have set the driver
temperature at
73 OF (23 "C) and have selected the
AUTO mode. The system will automatically adjust the
temperature output to maximum cooling. The blower
will start at a low speed momentarily to push the hot air
to the floor of the vehicle and then go to a higher blower
speed with cold airflow out of the instrument panel
outlets.
A small amount of airflow will continue through
the lower ducts to cool the
floor area.
The air intake may start in the recirculated mode for
maximum cooling performance.
As the interior of the
vehicle cools down to your comfort set temperature, the
fan speed will decrease and the temperature output may
become warmer. The air intake may shift from
recirculation to fresh air mode.
If the interior continues to
cool due to a decrease,,,in the amount of heat the
vehicle is absorbing from the sun or a decrease
in the
outside temperature, the system could switch to other air
delivery modes (typically BI-LEVEL or DEFOG).
Manual Settings
With the Dual Zone Electronic Climate Control, there
are several manual settings you can use to control the
system and override the
AUTO operation. You can
program the fan speed,
air delivery mode, air intake
mode and control the air conditioning operation using
these settings. The system will still determine the
temperature output level based on the driver-set
temperature and the passenger temperature offset.
% FAN SPEED: Press the button with the fan switch
on it to manually lock
in the current fan speed and to
stop the automatic fan speed control. Pressing the
arrows will delete
AUTO from the digital display. The
fan graphics with the fan speed bars will be shown.
To
increase the fan speed so that more air flows into the
vehicle, press the
UP arrow on the fan switch. To
decrease the fan speed and airflow, press the DOWN
arrow. The
AUTO button must be pressed to return to
the automatic fan control.

Downloaded from www.Manualslib.com manuals search engine Air Conditioning Heating
On
very hot days, your vehicle will cool down more
quickly and economically if you open the windows long
enough to let hot inside
air escape. Then keep your
windows closed in order to allow the air conditioning to
work best. Maximum cooling will occur when the
RECIRCULATE setting is operating, airflow direction is
in the upper mode, and the temperature control knob (on
a manual climate control system) is turned all the way to
the blue area. These settings will be selected by the
Automatic Electronic Dual Climate Control System if
operating in AUTO when maximum cooling is required.
When the air conditioning is on, you may sometimes
notice slight changes in your vehicle’s engine
performance and power. This is normal. The system is
designed to .help fuel economy while maintaining the
desired cooling level.
The
air conditioning removes moisture from the air, so you
may notice water dripping fi-om under your vehicle when
it is idling or after it has been turned
off. This is normal. The
heater works best
if you keep your windows closed.
Maximum heating will occur when airflow direction is
in the lower mode and the temperature control knob (on
a manual climate control system) is all the way
in the
red area. These settings will be selected by the
Automatic Electronic Dual Climate Control System if
operating in AUTO when maximum heating is required.
The BI-LEVEL setting is designed for use on sunny days
when the
air is only moderately warm or cool. On days
like these, the sun may adequately warm your upper body,
but your lower body may not
be warm enough. The
BI-LEVEL setting will direct cooler airflow to
your upper
body and warmer
air to the floor area.
If you have the optional engine coolant heater and use it
during cold weather
0°F (- 18 “C) or lower, your heating
system will provide heat more quickly because the
coolant is already warmed. See “Engine Coolant Heater”
in the Index.
3-10

Downloaded from www.Manualslib.com manuals search engine Section 5 Problems on the Road
Here you’ll find what to do about some problems that can occur on the ro\
ad.
5-2
5-3
5-8 5-13 Hazard Warning Flashers
Jump Starting
Towing Your Vehicle
Engine Overheating
5-16 Cooling System
5-22 If a Tire Goes Flat
5-22 If You’re Stuck: In Sand, Mud, Ice or Snow
5-1

Downloaded from www.Manualslib.com manuals search engine Engine Overheating
You will find an engine coolant temperature gage on the
instrument cluster and a COOLANT OVER TEMP
message on the Driver Information Center
(DIC).
Overheated Engine Protection
Operating Mode
Should a low coolant condition exist and the messages
COOLANT OVERTEMP and REDUCED ENGINE
POWER are displayed, along with the Check Engine
light, an overheat protection mode which alternates
firing groups of four cylinders helps prevent engine
damage. In this mode, you will notice a loss in power
and engine performance. This operating mode allows
your vehicle to be driven to a safe place in an
emergency; you may drive up
to 50 miles (80 km).
1 NOTICE:
After driving in the overheated engine protection
operating mode, to avoid engine damage, allow
the engine to cool before attempting any repair.
The engine oil will be severely degraded. Repair
the cause of coolant loss, change the oil and reset
the oil life monitor. See “Engine Oil, When to
Change” in the Index.
5-13

Downloaded from www.Manualslib.com manuals search engine The coolant level should be at or above the FULL
COLD 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.
A CAUTION:
I
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 if you keep running your engine
without coolant isn’t covered by your warranty.
See “Overheated Engine Protection Operating
Mode” in the Index.
If there seems to be no leak, with the engine on, check to
see if the electric engine cooling
fans are running. If the
engine is overheating, both
fans should be running. If
they aren’t.
vow vehicle needs service.
5-17

Downloaded from www.Manualslib.com manuals search engine How to Check Lubricant
If the level is below the bottom of the filler plug hole,
you’ll need to add some lubricant. Add enough lubricant
to raise
the level to the bottom of the filler plug hole.
What to Use
To add lubricant when the level is low, use Axle
Lubricant (GM Part
No. 12345977) or SAE 8OW-90
GL-5 gear lubricant. To completely refill after draining,
add
4 ounces (1 18 ml) of Limited-Slip Differential
Lubricant Additive (GM Part
No. 1052358). Then fill to the bottom
of the filler plug hole with Axle Lubricant
(GM Part No. 12345977) or SAE 8OW-90 GL-5
gear lubricant.
Engine Coolant
The cooling s stem 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 “Engine Overheating” in
the Index.
A
50/50 mixture of water and DEX-COOL@
coolant will:
0 Give freezing protection down to -34°F (-37°C).
8
0 Give boiling protection up to 265 “F (129” C).
Protect against rust and corrosion.
0 Help keep the proper engine temperature.
Let the warning lights and gauges work as
they should.
6-22

Downloaded from www.Manualslib.com manuals search engine Surge Tank Pressure Cap
NOTICE:
The surge tank pressure cap is a 15 psi (105 kPa)
pressure-type cap and must be tightly installed to prevent coolant
loss and possible engine damage
from overheating.
When you replace the surge tank pressure cap, a GM cap
is recommended.
Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a pre-set temperature.
When you replace the thermostat, a GM thermostat
is recommended.
Power Steering Fluid
When to Check Power Steering Fluid
It is not necessary to regularly check power steering fluid
unless you suspect there is a leak
in the system or you hear
an unusual noise. A fluid loss in this system could indicate
a problem. Have the system inspected
and repaired.

Downloaded from www.Manualslib.com manuals search engine 3. Put the blade assembly pivot in the wiper arm
hook. Pull up until the pivot locking tab locks
in the hook slot.
4. Carefully lower the wiper arm and blade assembly
into the windshield.
Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service, see
your Corvette Warranty booklet for details.
A CAUTION:
Poorly maintained and improperly used tires
are dangerous.
0
0
0
Overloading your tires can cause overheating
as a result of too much friction. You could
have an airout and a serious accident.
See
‘Zoading Your Vehicle” in the Index.
Underinflated tires pose the same danger as
overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be checked
when your tires are cold.
Overinflated tires are more likely to be
cut, punctured or broken by a sudden
impact
-- such as when you hit a pothole.
Keep tires at the recommended pressure.
Worn, old tires can cause accidents.
If your
tread is badly worn, or if your tires have
been damaged, replace them.

Downloaded from www.Manualslib.com manuals search engine Driving (Continued) Drunken
..................................... 4-2
Freeway
.................................... 4-20
InaBlizzard
................................. 4-26
IntheRain
.................................. 4-17
Oncurves
.................................. 4-10
OnSnowandIce ............................. 4-25
WetRoads
.................................. 4-17
Winter
...................................... 4-24
In Foreign Countries
........................... 6-4
Night
...................................... 4-15
On Hill and Mountain Roads
.................... 4-22
Through Deep Water
.......................... 4-18
Drunken Driving
................................ 4-2
Electrical Equipment. Adding
.......... 2.23.3.27. 6.62
Electrical System
............................... 6-62
Electronic Dual Climate Control System
.............. 3-4
Accessory Belt
............................... 6-72
Coolant
........................... 5-13,5-16, 6-22
Coolant Heater
............................... 2-24
Coolant Level Check
.......................... 7- 11
Coolant Temperature Gage ................ 2-8 1, 5- 13
Exhaust
........................... 2-15,2-37, 4-28
Identification
................................ 6-62
Oil, Adding ................................. 6-12
Oil, Additives
................................ 6-15
Oil, Life Monitor
............................. 6-15
EMT
......................................... 6-41
Engine
....................................... 6-10
FuseBlock
.................................. 6-67
Oil
........................................ 6-12
Oil, Checking
................................ 6-12
OilLevelCheck
.............................. 7-11
9-4
Oil. Used ................................... 6-16
Overheating
................................. 5-13
Specifications
................................ 6-70
Oil,
When to Change
.......................... 6-15
Running While Parked
......................... 2-38
Starting Your
................................ 2-22
Oil, Pressure Gage
............................ 2-84
EnglisWMetric Button
........................... 2-77
Ethanol
........................................ 6-4
Exhaust, Engine
...................... 2-15,2-37, 4-28
Express-Down Window
.......................... 2-41
Extended Mobility Tires
......................... 6-41
Fabric Cleaning
............................... 6-53
Fabric Protection
............................... 6-53
Fan Control Buttons
.......................... 3-2, 3-6
Feature, Theft-Deterrent
......................... 2-17
Fiberglass Springs
.............................. 6-59
Fifth Gear. Manual Transmission
................... 2-29
Filling
a Portable Fuel Container .................... 6-8
Filling Your Tank ................................ 6-5
Filter, Air Cleaner
.............................. 6-17
Finish Damage
................................. 6-59
Finish Damage
................................. 6-59
First Gear, Automatic Transmission
................ 2-28
First Gear, Manual Transmission
................... 2-29
Flashers, Hazard Warning
......................... 5-2
Flat Tire, What to Do
............................ 5-22
Fluid Capacities
................................ 6-71
Overheated
Engine Protection Operating Mode
..... 5-13
Finishcare
.................................... 6-56
FloorMats
.................................... 2-59
FobTraining
................................... 2-97
FogLamps
.................................... 2-51