climate control CHEVROLET OPTRA 5 2007 1.G User Guide

Defogging and Defrosting
Fog on the inside of windows is a result of high
humidity or moisture condensing on the cool
window glass. This can be minimized if the climate
control system is used properly. There are
two modes to clear fog or frost from your
windshield. Use the defog mode to clear the
windows of fog or moisture and warm the
passengers. Use the defrost mode to remove fog
or frost from the windshield more quickly.
Select one of these available modes from the
right knob.
É(Defog):This mode directs most of the air to
the windshield and the floor outlets. A small
amount of air is also directed to the outboard
outlets for the side windows and to the instrument
panel side outlets.When you select this mode, the system runs the
air-conditioning compressor. To defog the windows
faster, turn the temperature control knob
clockwise to the warmest setting.
0(Defrost):This mode directs most of the air to
the windshield and the outboard outlets for the
side windows. A small amount of air is also
directed to the instrument panel side outlets.
When you select this mode, the system runs the
air-conditioning compressor. To defrost the
windows faster, turn the temperature control knob
clockwise to the warmest setting.
Do not drive the vehicle until all windows are clear.
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Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum selection width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the Unites States National Highway
Traffic Safety Administration (NHTSA), which
grades tires by treadwear, traction, and
temperature performance. This applies only to
vehicles sold in the United States. The grades are
molded on the sidewalls of most passenger car
tires. The Uniform Tire Quality Grading (UTQG)
system does not apply to deep tread, winter-type
snow tires, space-saver, or temporary use
spare tires, tires with nominal rim diameters of
10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements.
Treadwear
The treadwear grade is a comparative rating based
on the wear rate of the tire when tested under
controlled conditions on a specified government
test course. For example, a tire graded 150 would
wear one and a half (1
1⁄2) times as well on the
government course as a tire graded 100. The
relative performance of tires depends upon the
actual conditions of their use, however, and may
depart significantly from the norm due to variations
in driving habits, service practices, and differences
in road characteristics and climate.
Traction — AA, A, B, C
The traction grades, from highest to lowest, are
AA, A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured
under controlled conditions on specified
government test surfaces of asphalt and concrete.
A tire marked C may have poor traction
performance.
Warning:The traction grade assigned to this tire
is based on straight-ahead braking traction tests,
and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
320

CD, MP3 ............................................194, 198
Center High-Mounted
Stoplamp (CHMSL).........................296, 297
Center Rear Passenger Position,
Safety Belts............................................... 36
Chains, Tire................................................. 323
Charging System Light................................ 167
Check
Engine Light............................................ 172
Checking Things Under the Hood................ 256
Chemical Paint Spotting.............................. 343
Child Restraints
Child Restraint Systems............................. 45
Infants and Young Children........................ 41
Lower Anchors and Tethers for
Children.................................................. 51
Older Children........................................... 38
Securing a Child Restraint in a
Rear Seat Position................................. 59
Securing a Child Restraint in the
Right Front Seat Position........................ 62
Where to Put the Restraint........................ 50
Cigarette Lighter.......................................... 153
Cleaning
Aluminum Wheels.................................... 341
Exterior Lamps/Lenses............................. 340
Fabric/Carpet........................................... 337Cleaning (cont.)
Finish Care.............................................. 340
Inside of Your Vehicle .............................. 335
Instrument Panel, Vinyl, and Other
Plastic Surfaces.................................... 338
Leather.................................................... 338
Tires........................................................ 342
Underbody Maintenance........................... 342
Washing Your Vehicle .............................. 339
Weatherstrips........................................... 339
Windshield and Wiper Blades................... 340
Climate Control System............................... 155
Air Filter, Passenger Compartment........... 159
Outlet Adjustment..................................... 159
Clock.......................................................... 154
Clutch, Hydraulic......................................... 266
Collision Damage Repair............................. 401
Compact Spare Tire.................................... 334
Control of a Vehicle..................................... 210
Convenience Net......................................... 129
Coolant
Engine Temperature Gage........................ 171
Heater, Engine......................................... 109
Surge Tank Pressure Cap........................ 271
Cooling System........................................... 273
Cruise Control............................................. 145
Cruise Control Light.................................... 176
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