1999 CHEVROLET CORVETTE length

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3-5
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 clockwise for
warmer air on the passenger's side, counterclockwise for
cooler air. If the driver
-set temperature is set at 60
F
(16
C) or 90
F (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
F/ 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.

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4-3
Drunken Driving
Death and injury associated with drinking and driving is
a national tragedy. It's the number one contributor to
the highway death toll, claiming thousands of victims
every year.
Alcohol affects four things that anyone needs to drive
a vehicle:

Judgment

Muscular Coordination

Vision

Attentiveness.
Police records show that almost half of all motor
vehicle
-related deaths involve alcohol. In most cases,
these deaths are the result of someone who was drinking
and driving. In recent years, over 17,000 annual motor
vehicle
-related deaths have been associated with the use
of alcohol, with more than 300,000 people injured.
Many adults
-- by some estimates, nearly half the adult
population
-- choose never to drink alcohol, so they
never drive after drinking. For persons under 21, it's
against the law in every U.S. state to drink alcohol.
There are good medical, psychological and
developmental reasons for these laws.The obvious way to solve the leading highway safety
problem is for people never to drink alcohol and then
drive. But what if people do? How much is ªtoo muchº
if the driver plans to drive? It's a lot less than many
might think. Although it depends on each person and
situation, here is some general information on
the problem.
The Blood Alcohol Concentration (BAC) of someone
who is drinking depends upon four things:

The amount of alcohol consumed

The drinker's body weight

The amount of food that is consumed before and
during drinking

The length of time it has taken the drinker to
consume the alcohol.
According to the American Medical Association, a
180
-lb. (82 kg) person who drinks three 12-ounce
(355 ml) bottles of beer in an hour will end up with a
BAC of about 0.06 percent. The person would reach the
same BAC by drinking three 4
-ounce (120 ml) glasses
of wine or three mixed drinks if each had 1
-1/2 ounces
(45 ml) of a liquor like whiskey, gin or vodka.

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6-38 Back-Up Lamps
You can access the back-up lamps through the inboard
taillamp opening. See ªRear Turn Signal and Taillampsº
in the Index.
1. Squeeze the tab on the socket while turning it
counterclockwise to remove it from the assembly.
2. Remove the bulb from the socket.
3. Reverse the steps listed previously with a new bulb.
Windshield Wiper
Blade Replacement
Windshield wiper blades should be inspected at least
twice a year for wear or cracking. See ªWiper Blade
Checkº in Section 7 of this manual under Part B ªOwner
Checks and Servicesº for more information.
Replacement blades come in different types and are
removed in different ways. For the proper type and
length, see ªNormal Maintenance Replacement Partsº in
the Index.
It's a good idea to clean or replace the wiper blade
assembly every six months.
NOTICE:
Use care when removing or installing a blade
assembly. Accidental bumping can cause the arm
to fall back and strike the windshield.

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6-76
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the air
conditioning system in your vehicle needs refrigerant, be
sure the proper refrigerant is used. If you're not sure, ask
your dealer.
Normal Maintenance
Replacement Parts
Air Cleaner FilterA917C . . . . . . . . . . . . . . . . . . . . . .
Battery78A
-72H . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Surge Tank CapGM Part No. 10296465 . . .
15 psi (105 kPa)
Engine Oil FilterPF44 . . . . . . . . . . . . . . . . . . . . . . . .
PCV Valve799C . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0.060 inch (1.524 mm)
Spark Plug41
-931 (0.60 inch Gap) . . . . . . . . . . . . .
ThermostatGM Part No. 12555717 . . . . . . . . . . . . .
or equivalent
Windshield Wiper Blade
Length 22 inches (55.9 cm). . . . . . . . . . . . . . . . . . . .
Type 9 mm x 3 mm Shepherd's Hook. . . . . . . . . . . .
Vehicle Dimensions
Wheelbase104.5 inches (265.4 cm) . . . . . . . . . . . . . .
Tread
Front 62.1 inches (157.7 cm). . . . . . . . . . . . . . . . . .
Rear 62.0 inches (157.4 cm). . . . . . . . . . . . . . . . . . .
Length179.7 inches (456.4 cm) . . . . . . . . . . . . . . . . .
Width73.6 inches (186.9 cm) . . . . . . . . . . . . . . . . . . .
Height47.7 inches (121.1 cm) . . . . . . . . . . . . . . . . . .