CHEVROLET CORVETTE GRAND SPORT 2019 Owners Manual

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
160 Driving and Operating
Once the power assist is used up, it
can take longer to stop and the
brake pedal will be harder to push.
Steering
Electric Power Steering
The vehicle has electric power
steering. It does not have power
steering fluid. Regular maintenance
is not required.
If power steering assist is lost due
to a system malfunction, the vehicle
can be steered, but may require
increased effort.
If the steering assist is used for an
extended period of time while the
vehicle is not moving, power assist
may be reduced.
If the steering wheel is turned until it
reaches the end of its travel and is
held against that position for an
extended period of time, power
steering assist may be reduced.
Normal use of the power steering
assist should return when the
system cools down.See your dealer if there is a
problem.
Curve Tips
.
Take curves at a reasonable
speed.
. Reduce speed before entering a
curve.
. Maintain a reasonable steady
speed through the curve.
. Wait until the vehicle is out of
the curve before accelerating
gently into the straightaway.
Steering in Emergencies
.There are some situations when
steering around a problem may
be more effective than braking.
. Holding both sides of the
steering wheel allows you to turn
180 degrees without removing
a hand.
. The Antilock Brake System
(ABS) allows steering while
braking.
Off-Road Recovery
The vehicle's right wheels can drop
off the edge of a road onto the
shoulder while driving. Follow
these tips:
1. Ease off the accelerator and then, if there is nothing in the
way, steer the vehicle so that it
straddles the edge of the
pavement.
2. Turn the steering wheel about one-eighth of a turn, until the
right front tire contacts the
pavement edge.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 161
3. Turn the steering wheel to gostraight down the roadway.
Loss of Control
Skidding
There are three types of skids that
correspond to the vehicle's three
control systems:
.Braking Skid —wheels are not
rolling.
. Steering or Cornering Skid —
too much speed or steering in a
curve causes tires to slip and
lose cornering force.
. Acceleration Skid —too much
throttle causes the driving
wheels to spin.
Defensive drivers avoid most skids
by taking reasonable care suited to
existing conditions, and by not
overdriving those conditions. But
skids are always possible. If the vehicle starts to slide, follow
these suggestions:
.
Ease your foot off the
accelerator pedal and steer the
way you want the vehicle to go.
The vehicle may straighten out.
Be ready for a second skid if it
occurs.
. Slow down and adjust your
driving according to weather
conditions. Stopping distance
can be longer and vehicle
control can be affected when
traction is reduced by water,
snow, ice, gravel, or other
material on the road. Learn to
recognize warning clues —such
as enough water, ice, or packed
snow on the road to make a
mirrored surface —and slow
down when you have any doubt.
. Try to avoid sudden steering,
acceleration, or braking,
including reducing vehicle speed
by shifting to a lower gear. Any
sudden changes could cause
the tires to slide. Remember: Antilock brakes help
avoid only the braking skid.
Track Events and
Competitive Driving
{Danger
High-performance features are
intended for use only on closed
tracks by experienced and
qualified drivers and should not
be used on public roads.
High-speed driving, aggressive
cornering, hard braking, and other
high-performance driving can be
dangerous. Improper driver inputs
for the conditions may result in
loss of control of the vehicle,
which could injure or kill you or
others. Always drive safely.
Participating in track events or other
competitive driving without following
the instructions provided may affect
the vehicle warranty. See the
warranty manual before using the

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
162 Driving and Operating
vehicle for racing or other
competitive driving. SeeCompetitive
Driving Mode 0203.
A manual transmission is
recommended for extended track
usage at higher ambient
temperatures. Consult the Track
Preparation Guide for additional
information. See your dealer.
Be sure to follow all service
procedures before driving the
vehicle at track events or
competitively.
Prior to each track event and again
before re-entering the public road
system, tighten the wheel nuts with
a torque wrench to the proper
torque specification. See Capacities
and Specifications 0326.Engine Sound Management
Setting
Caution
Do not place the vehicle in
Engine Sound Management –
Stealth mode. Damage could
result to exhaust valve actuators.
Engine Oil
Caution
If the vehicle is used for track
events and competitive driving,
the engine may use more oil than
it would with normal use. Low oil
levels can damage the engine.
Check the oil level often and
maintain the proper level. See
Engine Oil0232.
The engine is factory filled with
0W-40 dexos2 oil. For LT1 and LT4
engines only, 0W-40 dexos2 engine
oil is approved for both track and
street use. 15W-50 full synthetic engine oil may also be used for
track use, but after track use must
be changed back to 0W-40 dexos2
for street use. If 0W-40 dexos2 oil is
not available, 5W-30 dexos1 full
synthetic engine oil may be used for
street use. If 5W-30 dexos1 is used,
it must be changed to 0W-40
dexos2 or 15W-50 full synthetic
engine oil for track use.
For the LT5 engine, SAE 15W-50
full synthetic engine oil must be
used for track use, but after track
use must be changed back to
0W-40 dexos2 for street use.
Z51 Performance Package, Grand
Sport, Z06, and ZR1: Check the oil
level often during track events and
competitive driving and keep the
level at or near 0.5 L (0.5 qt) above
the upper mark that shows the
proper operating range on the
engine oil dipstick. After the
competitive driving, remove excess
oil so that the level on the dipstick is
not above the upper mark that
shows the proper operating range.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 163
Stingray without Z51 Performance
Package: Additional oil fill above the
upper mark on the dipstick is not
recommended for track events or
other competitive driving. Check the
oil level often during racing or other
competitive driving and keep the
level at or near the upper mark that
shows the proper operating range
on the engine oil dipstick. After the
competitive driving, remove excess
oil so that the level on the dipstick is
not above the upper mark that
shows the proper operating range.
Fuel
LT1 Engine :93 octane (or higher)
unleaded gasoline is required.
LT4 Engine : 93 octane (or higher)
unleaded gasoline is required.
100 octane (or higher) unleaded
gasoline is recommended at the
track when temperatures are above
30 °C (86 °F) to maximize
powertrain performance and
improve longevity of components
within the powertrain. LT5 Engine :
93 octane (or higher)
unleaded gasoline is required.
100 octane (or higher) unleaded
gasoline is recommended to
maximize powertrain performance
and improve longevity of
components within the powertrain.
Caution
Some high octane fuels contain
additives and compounds that
may damage the vehicle and void
the vehicle warranty. See
Prohibited Fuels 0213.
Automatic Transmission Fluid
Transmission fluid should be
changed after every 15 hours of
track usage. Any transmission level
set or change should be performed
at your dealer.
Manual Transmission Fluid
Manual transmission fluid should be
changed after every 15 hours of
track usage.
Load Limit
Z51 Performance Package Only:
Limit vehicle load to the driver only,
with no other cargo. Inflate tires to
180 kPa (26 psi) and drive at a
maximum speed of 280 km/h
(174 mph).
Grand Sport, Z06, and ZR1 Only:
Limit vehicle load to the driver only,
with no other cargo. Inflate tires to
180 kPa (26 psi) and drive at a
maximum speed of 296 km/h
(184 mph).
Wheel Alignment
Caution
Using these wheel alignment
settings may cause excessive tire
wear. Only use these wheel
alignment settings for racing or
competitive driving. Excessive tire
wear is not covered under the
vehicle warranty.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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164 Driving and Operating
ZR1 FEB suspension equipped
vehicles can be lowered 12 mm in
the front for optimal track
performance. Lowering the vehicle
should be completed prior to the
track suspension alignment. The
front spring outboard ends must be
unloaded from the front control arms
in order to adjust the spring cushion
adjuster screws upward by
approximately 6–9 mm to achieve
the lowered condition. Driving on
the public roads in this condition is
not recommended.
Caution
Failure to unload the front spring
outboard ends before adjusting
the spring cushion adjuster
screws could damage the spring.If the vehicle is a Z51, Grand Sport,
Z06, or ZR1, the racing and
competitive driving wheel alignment
settings should be set as
described here:
.
Z51 Performance
Package –remove one washer
from each upper control arm to
body bolt attachment (both front
and rear).
. Grand Sport, Z06, and
ZR1 models –do not remove
washers from front or rear upper
control arm bolts.
Proceed by adjusting the lower
control arm cam bolts until
alignment is within specifications.
Alignment values are targets. See
your dealer for tolerances.
After track use, reinstall washers
and reset to factory alignment
settings.
Front (per corner)
. Caster: +7.0 degrees
. Camber: -2.0 degrees
. Toe: 0.05 degrees toe in Rear (per corner)
.
Caster: 0 degrees
. Camber: -2.0 degrees
. Toe: 0.05 degrees toe in
Thrust Angle: 0 degrees
Rear Axle Fluid
Caution
During a first time track or racing
event, high rear axle
temperatures can occur. Damage
could be caused to the rear axle
and would not be covered by the
vehicle warranty. Do not drive as
long or as fast the first time the
vehicle is driven on the track or
raced.
Axles must have 2414 km (1,500 mi)
before being used in track driving.
The rear axle fluid temperatures
may be higher than when driving in
severe conditions. Drain and refill
with new fluid after the first racing or
competitive driving event, and then

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 165
after every 24 hours of racing or
competitive driving. See
Recommended Fluids and
Lubricants0321.
General Information
If reduced performance is
experienced during track events or
competitive driving, turning off the
A/C will help to improve engine
performance.
Maintain a mixture of 40%
DEX-COOL coolant and 60% clean,
drinkable water to optimize engine
performance.
The front license plate bracket or
aero panel should be removed for
track events and competitive driving
to improve engine performance.
Brakes
{Warning
Braking above 200 mph:
(Continued)
Warning (Continued)
Applying and sustaining full force
braking at speeds exceeding
200 mph (322 km/h) can cause
serious damage to the braking
system. At any speed, braking
must be performed in a smooth
and controlled manner, but at
these speeds specifically, lower
initial brake pedal efforts are
recommended.
Brake Cooling
If additional brake cooling is
required, the grille mesh in the lower
corners of the front grille in front of
the brake duct can be removed.
This is not reversible, and a
replacement grille will not be
covered by the vehicle warranty.
If this is done, it is recommended
that the gap between the fascia and
the cooling duct be taped over. Brake Fluid
Replace existing brake fluid with a
qualified high performance brake
fluid from a sealed container. Brake
fluid with a dry boiling point >310 °C
(590 °F) is qualified. If high
performance brake fluid is used,
replace it with GM approved brake
fluid before driving on public roads.
If high performance brake fluid is in
the vehicle and the age of the brake
fluid is over a month old or
unknown, replace the brake fluid
before track events and competitive
driving. Do not use silicone or
DOT-5 brake fluids.
Brake Burnishing
New brake pads must be burnished
before racing or other competitive
driving.
Caution
Performing the brake burnish
procedure on a base brake
system can result in brake
damage.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
166 Driving and Operating
Caution
The new vehicle break-in period
should be completed before
performing the brake burnish
procedure, otherwise damage
may occur to the powertrain/
engine. SeeNew Vehicle
Break-In 0179.
Caution
Brake pedal fade will occur during
any track burnish procedure and
can cause brake pedal travel and
force to increase. This could
extend stopping distance until the
brakes are fully burnished.
When this procedure is performed
as instructed, it will not damage the
brakes. The brake pads will smoke
and produce an odor. The braking
force and pedal travel may increase.
After the procedure, the brake pads
may appear white at the rotor
contact. Perform this procedure only on dry
pavement, in a safe manner, and in
compliance with all local and state
ordinances/laws regarding motor
vehicle operation.
Brake Burnishing Procedure (Z51
Performance Package, Grand
Sport with J56, and Z06 with J56)
1. Apply the brakes 25 times starting at 100 km/h (60 mph) to
50 km/h (30 mph) while
decelerating at 0.4 g. This is a
medium brake application.
Drive for at least 1 km (0.6 mi)
between applying the brakes.
This first step may be skipped
if there are more than 320 km
(200 mi) on the brake pads.
2. Repeatedly apply the brakes from 100 km/h (60 mph) to
25 km/h (15 mph) while
decelerating at 0.8 g. This is a
hard brake application, without
activating the Antilock Brake
System (ABS). Drive for at
least 1 km (0.6 mi) between
stops. Repeat until the brake
pedal travel starts to increase. Depending on conditions, this
should take no longer than 25
brake applications.
3. Cool down: Drive at 100 km/h (60 mph) for approximately
15 km (10 mi) without using the
brakes.
4. Apply the brakes 25 times from 100 km/h (60 mph) to 50 km/h
(30 mph) while decelerating at
0.4 g. This is a medium brake
application. Drive for at least
1 km (0.6 mi) between
applications.
Street High Performance Brake
Burnishing Procedure (Grand
Sport with J57, Z06 with J57,
and ZR1)
This procedure should only be run
on a track or other non-public area,
and only on dry pavement. 1. From a stop, accelerate as rapidly as possible without
activating traction control to a
speed of 100 km/h (60 mph).

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Driving and Operating 167
2. Use enough pedal force tocompletely stop the vehicle in
four to five seconds. If ABS
activates, braking is too hard.
3. Repeat Steps 1 and 2 –20
consecutive times, this should
take about 5 minutes.
4. After completing the 20 stops, cool the brakes by driving for
8 km (5 mi) at 100 km/h
(60 mph).
As with all high performance brake
systems, some amount of brake
squeal is normal.
Racing/Track Brake Burnishing
Procedure (Grand Sport with J57,
Z06 with J57, and ZR1)
This procedure should only be run
on a track and only on dry
pavement.
Caution
Brake pedal fade will occur during
this track burnish procedure and
can cause brake pedal travel and (Continued)
Caution (Continued)
force to increase. This could
extend stopping distance until the
brakes are fully burnished.
1. Drive a normal first lap, not too aggressively.
2. Laps 2 and 3 should be gradually driven faster and
more aggressively, while
allowing for reduced brake
output and increased stopping
distance due to brake fade.
3. Drive Lap 4 near full speed, while allowing for reduced
brake output and increased
stopping distance due to
brake fade.
4. Laps 5 and 6 should be cool down laps.
5. Lap 7 should be normal driving or an easy out lap.
Exhaust Cooling
Hardware (ZR1)
The exhaust cooling hardware
should be installed prior to any track
event. These components will help
cool the exhaust system.
To install the closeout plates and
deflectors:
1. Install the 12 U-nuts onto the
tunnel brace. Align the
threaded holes in the U-nuts
with the holes in the tunnel
brace.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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168 Driving and Operating
2. Install the two closeout platesover the holes.
Install the two deflectors over
the holes, with the shorter one
in front.
3. Torque all the fasteners to 9Y (6.6 lb ft).
When the track event is complete,
remove the closeout plates and
deflectors and store them for the
next track event.
Rear Adjustable Performance
Wing (If Equipped)
The Rear Adjustable Performance
Wing can be adjusted up for greater
downforce during a track event.
To change the angle of the rear
wing, remove the rear attaching
bolts and move them to the upper
hole. Tighten the bolts to 9 Y
(6.6 lb ft). Return the wing to the
factory location following the track
event. Every time the wing is
adjusted, re-apply threadlocker to
the attachment bolts. See
Recommended Fluids and
Lubricants 0321.
Front Compartment Air
Deflector Panel
Prior to the track event, when
ambient temperatures are above 27
°C (80 °F), the panel between the
front fascia extension and the front
cradle can be removed to maximize
cooling air flow to the steering gear
power assist motor.
To remove the air deflector:
1. Remove the four front (2) and
three rear (4) front
compartment air deflector
screws.

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Driving and Operating 169
2. Remove the forwardpush pin (1).
3. Remove the front compartment air deflector (3) by tipping the
rear down and sliding it out
from under the lower deflector
panel.
When the track events are
complete, reinstall this panel.
Z07 Performance Package
Z06 with the Z07 Performance
Package has installed Stage 2 and
Stage 3 Aero Packages, which
consist of a front splitter with short
end caps, rocker panel extensions,
and a rear spoiler.
Stage 3 Aero components are
delivered but not installed on the
vehicle. These are intended to be
installed for track use only. The
components include:
. Front splitter tall end caps that
replace the front splitter short
end caps
. A center transparent wicker bill
for the rear spoiler
{Warning
Changing the following track
settings could reduce tire traction
and could cause a crash. Do not
change the track settings.
The track settings for the Z07
Performance Package with the
Stage 3 Aero Package are:
. The front splitter tall end caps
installed
. The center transparent wicker
bill installed all the way up on
the rear spoiler
. The Driver Mode Selector in
Track Mode
Stingray with Performance
Package-Carbon Fiber (CFZ)
The Stingray with Performance
Package-Carbon Fiber (CFZ) has
an installed aero package which
consists of a front splitter with short
end caps, rocker panel extensions,
and a rear spoiler. A center
transparent wicker bill for the rear spoiler is delivered but not installed.
This is intended to be installed for
track use only.
Front Brake Cooling Duct Kit
(Z06 and ZR1)
The following installation procedure
is for Z06/ZR1 vehicles. The upper
cooling ducts should be installed
prior to any track events or high
speed straight runs.
To install the cooling ducts:
1. Remove the front wheels. Refer to the procedure in the
vehicle service manual.