Engine Coolant Heater (Engine Block Heater); Audio Systems - GMC 1994 Sonoma Owner's Manual

OFF':
This setting turns off all heating functions. Some outside air will still
come out of the heater outlet whenever the vehicle is moving forward.
MAX A/C: Air inside your vehicle is recirculated to maximize your air
conditioner's performance and your vehicle's fuel economy. This setting
cools the air the fastest and should be used to keep "unwanted odors" from
entering vehicle..
NORM A/C: This setting cools outside air and directs
it through the
instrument panel vents. This setting is useful for normal cooling on hot
days.
BI-LEV A/C: Outside air is delivered through the heater floor vents and
the instrument panel vents. This setting is useful in cool weather with bright
sunlight.
VENT: Airflow is through the instrument panel vents. Set the upper knob to
the temperature desired. This setting is useful for mild outside temperatures,
when little heating or cooling is desired.
HEAT Heated air comes out through the heater floor vents and windshield
defroster vents, This setting is useful for cold weather.
BLEND: Airflow is divided equally between the heater floor vent and the
windshield defroster vents. This setting is useful in cool weather when you
have fog or ice on the windshield or side windows.
DEF: This setting directs most air through the windshield defroster vents
and some through the heater vents. This setting is useful when you have fog
or ice on the windshield.
Engine Coolant Heater (Engine Block Heater)
If you use the optional engine coolant heater before starting your engine,
your heating system will produce warmer air faster, to heat the passenger
compartment in cold weather. See "Engine Coolant Heater" in the Index.
Audio Systems
Your Delco' audio system has been designed to operate easily and give
years of listening pleasure. But you will get the most enjoyment out of it if
you acquaint yourself with it first. Find out what your Delco@ system can
do and how to operate all
its
controls, to
be
sure you're getting
the
most
out
of the advanced engineering that went into
it.
Be aware that hearing damage from loud noise is almost undetectable until
it is too late. Your hearing can adapt to higher volumes of sound. Sound that
seems normal can be loud and harmful to your hearing. Take precautions by
adjusting the volume control on your radio to a safe sound level before your
hearing adapts to it.