Defogging and Defrosting
Fog on the inside of the windows is a result of high
humidity (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 and side windows.
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. For best results, clear all snow and ice
from the windshield before defrosting.
-(Defog):This mode can be used on cool, humid
days to keep the windshield and side windows clear.
1(Defrost):This mode directs most of the air to the
windshield and the side window outlets, with only a
little air directed to the ¯oor outlets. When you select this
mode, the system runs the air-conditioning compressor
unless the outside temperature is at or below freezing.
Do not drive the vehicle until all the windows are clear.
Outlet Adjustment
The ¯ow through outlets on your vehicle allow outside
air to enter your vehicle while it is moving. Outside
air will also enter your vehicle while the air-conditioning
compressor is running.
Use the thumbwheels located in the center and on the
sides, to change the direction of the air ¯owing
through the outlets.
3-21
Uniform Tire Quality Grading
Quality grades can be found where applicable on the
tire sidewall between tread shoulder and maximum
section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system developed
by the United States National Highway Traffic Safety
Administration, 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 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 and additional General Motors Tire
Performance Criteria (TPC) standards.
Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a speci®ed government test course.
For example, a tire graded 150 would wear one and
a half (1.5) 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 signi®cantly 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 speci®ed 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.
5-67
Chains, Tires..................................................5-70
Charging System Light....................................3-29
Checking Brake Fluid......................................5-43
Checking Coolant............................................5-28
Checking Engine Oil........................................5-15
Checking the Fluid Level..................................5-23
Checking Things Under the Hood......................5-10
Checking Your Restraint Systems......................1-65
Check...........................................................3-33
Engine Light...............................................3-33
Gages Warning Light...................................3-38
Chemical Paint Spotting...................................5-90
Child Restraints..............................................1-36
Child Restraint Systems...............................1-36
Infants and Young Children...........................1-32
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-44
Older Children.............................................1-30
Securing a Child Restraint Designed for the
LATCH System........................................1-46
Securing a Child Restraint in a Center Seat
Position..................................................1-49
Securing a Child Restraint in a Rear Outside
Seat Position...........................................1-46
Securing a Child Restraint in the Right Front
Seat Position...........................................1-49
Top Strap Anchor Location............................1-43
Top Strap...................................................1-41
Where to Put the Restraint...................1-39, 1-40
Cigarette Lighter.............................................3-18Cleaning Aluminum Wheels..............................5-89
Cleaning Exterior Lamps/Lenses.......................5-87
Cleaning Fabric/Carpet....................................5-84
Cleaning Glass Surfaces..................................5-86
Cleaning Interior Plastic Components.................5-86
Cleaning Leather............................................5-85
Cleaning the Mirror.........................................2-39
Cleaning the Photocells...................................2-39
Cleaning the Top of the Instrument Panel...........5-86
Cleaning the Windshield and Wiper Blades.........5-88
Cleaning Tires................................................5-89
Cleaning Vinyl................................................5-85
Cleaning Wood Panels....................................5-86
Cleaning........................................................5-84
Inside of Your Vehicle..................................5-84
Outside of Your Vehicle................................5-87
Underbody Maintenance...............................5-90
Weatherstrips..............................................5-87
Climate Control System...................................3-18
Outlet Adjustment........................................3-21
Clutch, Hydraulic.............................................5-26
Compact Disc Messages.................3-52, 3-62, 3-73
Compact Spare Tire........................................5-83
Content Theft-Deferrent....................................2-17
Control of a Vehicle.......................................... 4-6
Coolant.........................................................3-32
Engine Temperature Gage............................3-32
Heater, Engine............................................2-24
Cooling System..............................................5-32
Cooling.........................................................3-19
3
