1999 CHEVROLET CORVETTE traction control

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5-19
NOTICE:
Spinning your wheels can destroy parts of your
vehicle as well as the tires. If you spin the wheels
too fast while shifting your transmission back
and forth, you can destroy your transmission.
For information about using tire chains on your vehicle,
see ªTire Chainsº in the Index.
Rocking Your Vehicle To Get It Out
First, turn your steering wheel left and right. That will
clear the area around your front wheels. You should turn
your TCS System off. (See ªTraction Control Systemº
in the Index.) Then shift back and forth between
REVERSE (R) and a forward gear, spinning the wheels
as little as possible. For a manual transmission, shift
slowly between either FIRST (1) or SECOND (2) and
REVERSE (R), allowing the wheels to stop before
shifting into gear. Release the accelerator pedal while
you shift, and press lightly on the accelerator pedal
when the transmission is in gear. By slowly spinning
your wheels in the forward and reverse directions, you
will cause a rocking motion that may free your vehicle.
If that doesn't get you out after a few tries, you may
need to be towed out. If you do need to be towed out,
see ªTowing Your Vehicleº in the Index.

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6-47
CAUTION:
Mixing tires could cause you to lose control while
driving. If you mix tires of different sizes (other
than those originally installed on your vehicle) or
types (radial and bias
-belted tires), the vehicle
may not handle properly, and you could have a
crash. Using tires of different sizes (other than
those originally installed on your vehicle) may
also cause damage to your vehicle. Be sure to use
the correct size and type tires on all four wheels.
If you feel that winter tires are needed, see ªExtended
Mobility Tiresº in the Index.
CAUTION:
If you use bias-ply tires on your vehicle, the
wheel rim flanges could develop cracks after
many miles of driving. A tire and/or wheel could
fail suddenly, causing a crash. Use only radial
-ply
tires with the wheels on your vehicle.
Uniform Tire Quality Grading
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.

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6-48
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.Temperature
-- A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire's resistance to the generation of
heat and its ability to dissipate heat when tested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance
which all passenger car tires must meet under the
Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance
on the laboratory test wheel than the minimum required
by law.
Warning: The temperature grade for this tire is
established for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.

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9-4
Driver Information Center (DIC) Messages (Continued)
Change Oil Now 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change Oil Soon 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charge System Fault 2-105 . . . . . . . . . . . . . . . . . . . . . . . . .
Competitive Driving 2-103 . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Over Temp 2-107 . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Disengaged 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Set_MPH (_km/h) 2-112 . . . . . . . . . . . . . . . . . . . . . .
Door Ajar 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Protection Reduce Engine RPM 2-112 . . . . . . . . . .
Flat Tire 2-110 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hatch Ajar 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Oil Temperature Reduce Engine rpm 2-107 . . . . . . . .
High Tire Pressure - (LF, LR, RF, RR) 2-111 . . . . . . . . . . .
High Trans Temp 2-108 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Voltage 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Brake Fluid 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Coolant 2-107 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Fuel 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Oil Level 2-104 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Oil Pressure 2-104 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Tire Pressure 2-109 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Voltage 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Washer Fluid 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Speed 80 mph (129 km/h) 2-107 . . . . . . . . . . . .
Pull-Key - Wait 10 Sec 2-104 . . . . . . . . . . . . . . . . . . . . . . .
Reduced Engine Power 2-104 . . . . . . . . . . . . . . . . . . . . . . .
Reserve Fuel 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service ABS 2-103 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Active Handling 2-108, 4-11 . . . . . . . . . . . . . . . . .
Service Column Lock 2-104 . . . . . . . . . . . . . . . . . . . . . . . . .
Service Ride Control 2-106 . . . . . . . . . . . . . . . . . . . . . . . . . Service Tire Mon Sys 2
-111 . . . . . . . . . . . . . . . . . . . . . . . . .
Service Traction System 2-106 . . . . . . . . . . . . . . . . . . . . . .
Service Vehicle Soon 2-105 . . . . . . . . . . . . . . . . . . . . . . . . .
Shocks Inoperative 2-106 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trac/Act Hndlg - Off 2-103 . . . . . . . . . . . . . . . . . . . . . . . . .
Trac/Act Hndlg - On 2-102, 4-11 . . . . . . . . . . . . . . . . . . . .
Traction Sys Active 2-105 . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction System - Off 2-106 . . . . . . . . . . . . . . . . . . . . . . . .
Traction System - On 2-105 . . . . . . . . . . . . . . . . . . . . . . . . .
Trunk Ajar 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Upshift Now 2-112 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warm Up Complete 2-102, 4-10 . . . . . . . . . . . . . . . . . . . . .
Driver Position 1-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driving 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
City 4-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Competitive 4-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defensive 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drunken 4-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Freeway 4-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In a Blizzard 4-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Foreign Countries 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
In the Rain 4-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Night 4-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Curves 4-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Hill and Mountain Roads 4-24 . . . . . . . . . . . . . . . . . . . .
On Snow and Ice 4-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Through Deep Water 4-20 . . . . . . . . . . . . . . . . . . . . . . . . . .
Wet Roads 4-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Winter 4-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRL 2-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drunk Driving 4-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-11
Specifications and Capacities 6-74 . . . . . . . . . . . . . . . . . . . . . .
Specifications, Engine 6-75 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Speech Impaired, Customer Assistance 8-4 . . . . . . . . . . . . . . .
Speedometer 2-77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sport Seat 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Springs, Fiberglass 6-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRTD System 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starter
Interlock 2
-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch Check 7-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your Engine 2-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steam 5-9, 5-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Emergencies 4-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power 4-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tips 4-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel, Telescopic 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel, Tilt 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage
Center Console 2
-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compartments 2-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear 2-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle 6-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stuck: In Sand, Mud, Ice or Snow 5-18 . . . . . . . . . . . . . . . . . .
Sun Visors 2-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Surge Tank
Coolant 5
-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Cap 6-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols, Vehicle x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Controls, Comfort Control System 3
-2, 3-4 . . . . . . . .
Tachometer 2-77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tape Player Care 3-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Telescopic Steering Wheel 2
-42 . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Controls 3-2, 3-4 . . . . . . . . . . . . . . . . . . . . . . . . .
Theft 2-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent System 3-27 . . . . . . . . . . . . . . . . . . . . . . . . . .
THEFTLOCK 3-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat 6-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Gear
Automatic Transmission 2
-29 . . . . . . . . . . . . . . . . . . . . . . .
Manual Transmission 2-31 . . . . . . . . . . . . . . . . . . . . . . . . . .
Tilt Steering Wheel 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time, Setting the 3-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire Chains 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire Training 2-101 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire-Loading Information Label 4-31 . . . . . . . . . . . . . . . . . . .
Tires 6-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment and Balance 6-49 . . . . . . . . . . . . . . . . . . . . . . . .
Buying New 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Extended Mobility 6-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
If One Goes Flat 5-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation 6-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation Check 7-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Rotation 6-46 . . . . . . . . . . . . . . . . . . . . . . . .
Loading 4-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure 6-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Treadwear 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Uniform Quality Grading 6-47 . . . . . . . . . . . . . . . . . . . . . . .
Used Wheel Replacement 6-51 . . . . . . . . . . . . . . . . . . . . . .
Wear Indicators 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Replacement 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . .
When It's Time for New 6-46 . . . . . . . . . . . . . . . . . . . . . . .
Top Strap 1-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-12
Torque Lock 2-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque, Wheel Nut 6-75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Towing
A Trailer 4
-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recreational Vehicle 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . .
Your Vehicle 5-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction Control
System 4
-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System (TCS) Light 2-81 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer Towing 4-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission Fluid 6-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic 6-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual 6-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Lock Check 7-16 . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitters, Remote Function Actuation System 2-7 . . . . . .
Transportation, Courtesy 8-8 . . . . . . . . . . . . . . . . . . . . . . . . . .
TTY Users 8-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal and Lane Change Indicator 2-43 . . . . . . . . . . . . .
Turn Signal/Multifunction Lever 2-43 . . . . . . . . . . . . . . . . . . .
Twilight Sentinel 2-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Underbody Flushing Service 7-16 . . . . . . . . . . . . . . . . . . . . .
Universal Theft-Deterrent System 2-17 . . . . . . . . . . . . . . . . . .
Arming 2-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disarming 2-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing 2-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle
Adding Equipment to the Outside of Your 6-3 . . . . . . . . . . .
Control 4-6, 4-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Damage Warnings ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 6
-76 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Identification Number 6
-65 . . . . . . . . . . . . . . . . . . . . . . . . .
Loading 4-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage 6-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ventilation System 3-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visor Vanity Mirrors 2-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visors, Sun 2-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltmeter 2-79 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Devices 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Lights, Gages and Messages 2-77 . . . . . . . . . . . . . . .
Warranty Information 8-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Washer Fluid, Windshield 6-27 . . . . . . . . . . . . . . . . . . . . . . . .
Washing Your Vehicle 6-60 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weatherstrip Lubrication 7-14 . . . . . . . . . . . . . . . . . . . . . . . . .
Weatherstrips 6-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel
Alignment 6
-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nut Torque 6-75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Wheel Lock Key 6-51 . . . . . . . . . . . . . . . . . . . . .
Windows 2-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Express-Down 2-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power 2-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield Washer 2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid Level Check 7-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield Wipers 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blade Replacement 6-38 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuses 6-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Winter Driving 4-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiper Blade Check 7-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring, Headlamp 6-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wrecker Towing 5-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .