2005 CHEVROLET CORVETTE check engine

Retained Accessory Power (RAP)
With RAP, your power windows and the audio system
will continue to work for up to 10 minutes after the
engine is turned off or until either door is opened. If a
door is opened, the power windows and audio system
will shut off.
Starting the Engine
Move your shift lever to PARK (P) or NEUTRAL (N) for
an automatic transmission, or your vehicle can be
started in NEUTRAL (N) or any other gear as long as
the clutch is depressed for a manual transmission.
To restart when you are already moving, use
NEUTRAL (N) only.
The keyless access transmitter must be in the vehicle
for the ignition to work.Notice:Do not try to shift to PARK (P) if your
vehicle is moving. If you do, you could damage the
transmission. Shift to PARK (P) only when your
vehicle is stopped.
1. For an automatic transmission, with your foot on the
brake pedal, press the START button. For a manual
transmission, while pressing in the clutch, press
the START button. When the engine begins
cranking, let go of the button. The idle speed will go
down as your engine gets warm.
If the battery in the keyless access transmitter is
weak, the DIC will display FOB BATTERY
LOW. You can still drive the vehicle. See “Battery
Replacement” underKeyless Access System
Operation on page 2-5for more information.
2. If the engine does not start and no DIC message is
displayed, wait 15 seconds before trying again.
Notice:Your engine is designed to work with the
electronics in your vehicle. If you add electrical
parts or accessories, you could change the way the
engine operates. Before adding electrical equipment,
check with your dealer. If you do not, your engine
might not perform properly. Any resulting damage
would not be covered by your vehicle’s warranty.
2-22

Stopping Your Engine
If your vehicle has an automatic transmission, move the
shift lever to PARK (P) and press the ACC button. If
the shifter is not in PARK (P), the vehicle will go
into accessory mode and the DIC will display SHIFT TO
PARK. Once the shifter is moved to PARK (P), the
vehicle will turn off.
If your vehicle has a manual transmission, move the
shift lever to REVERSE (R) and press the ACC button.
If the shifter is not in REVERSE (R), the vehicle will
go into accessory mode and the DIC will display SHIFT
TO REVERSE. Once the shifter is moved to
REVERSE (R), the vehicle will turn off.
If the keyless access transmitter is not detected while
going to off, the DIC will display NO FOB – OFF
OR RUN?.
SeeDIC Warnings and Messages on page 3-54for
more information.
Notice:If you do not put a manual transmission in
REVERSE (R) before exiting your vehicle, your
vehicle will not be secured, the battery will drain
and could be damaged. Always put a manual
transmission in REVERSE (R) before shutting off the
engine and exiting the vehicle.
Racing or Other Competitive Driving
See your warranty book before using your vehicle for
racing or other competitive driving.
Notice:If you use your vehicle for racing or other
competitive driving, the engine may use more
oil than it would with normal use. Low oil levels can
damage the engine. Be sure to check the oil level
often during racing or other competitive driving and
keep the level at or near 1 quart (1 L) above the
upper mark that shows the proper operating range
on the engine oil dipstick. For information on
how to add oil, seeEngine Oil on page 5-13. 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.
Vehicles with the Z51 performance package have
greaseable outer ends on both of the rear toe-links.
Under normal use, lubrication should be performed as
described in the maintenance schedule. SeeScheduled
Maintenance on page 6-4andRecommended Fluids
and Lubricants on page 6-12. If you use the vehicle for
racing, lubrication should be performed at the end of
each racing day. See your dealer for lubrication
and make sure any needed repairs are made at once.
Proper procedures for performing these services can be
found in the service manual. SeeService Publications
Ordering Information on page 7-11.
2-23

Battery Run-Down Protection
Your vehicle has a feature to help prevent you from
draining the battery in case the underhood lamp, vanity
mirror lamps, cargo lamps, reading lamps, console
or glove box lamps are accidentally left on. If you leave
any of these lamps on, they will automatically time-out
after about 20 minutes. To reset it, all of the above
lamps must be turned off or the ignition key on.
Head-Up Display (HUD)
{CAUTION:
If the HUD image is too bright, or too high in
your eld of view, it may take you more time to
see things you need to see when it is dark
outside. Be sure to keep the HUD image dim
and placed low in your eld of view.
If your vehicle is equipped with the Head-Up
Display (HUD), you can see some of the driver
information that appears on your instrument panel
cluster.The information may be displayed in English or metric
units and appears as an image focused out toward
the front of your vehicle. The HUD consists of the
following information:
Speedometer
Turn Signal Indicators
High-Beam Indicator Symbol
Tachometer
Oil and Temperature Gages
Shift Light (Performance SHIFT Light)
This light is used for performance driving to indicate
that the vehicle’s best performance level has
been reached to shift the transmission into the next
higher gear. The SHIFT light will display at an
engine speed of about 6,250 rpm, just prior
to reaching the engine fuel cut-off mode.
Check Gages Warning
Engine Coolant Temperature Gage
Transmission Oil Temperature Gage
Engine Oil Temperature Gage
Engine Oil Pressure Gage
G-Force Gage
3-20

Audio Functions, Street Mode Only
Navigation, Only with Navigation Radio, Street
Mode Only
Check Gages Warning
There are three HUD modes that you can choose
to view in the HUD display. By pressing the MODE
button, you can scroll through these modes in the
following order:
Street Mode supports
audio and navigation
functions with your choice
of tachometer settings.
Track Mode 1 supports the
G-Force gage and minor
gages with a circular
tachometer.Track Mode 2 supports
G-Force gages and minor
gages with a linear
tachometer.
When you have chosen the desired HUD display,
release the MODE button.
Within each mode, the display, can be further
customized by pressing the PAGE button. Pressing this
button in each mode will turn off and on the following:
Street Mode — No tachometer, circular tachometer
and linear tachometer.
Track Modes 1 and2—Nominor gage, coolant
temperature, transmission oil temperature, engine
oil temperature and engine oil pressure.
3-21

If your vehicle is equipped
with a navigation radio,
many of the turn-by-turn
navigation features
will also be displayed on
the HUD if you are in
Street Mode.
Be sure to continue scanning your displays, controls
and driving environment just as you would in a vehicle
without HUD. If you never look at your instrument
panel cluster, you may not see something important,
such as a warning light. Under important warning
conditions, the CHECK GAGES warning will illuminate
in the HUD. View your Driver Information Center (DIC)
for more information.The HUD controls are
located to the left of the
steering wheel.
To adjust the HUD so you can see it properly, do the
following:
1. Start your engine and press the HUD dimmer
control all the way up by pressing the (+) button.
The brightness of the HUD image is determined by
the light conditions in the direction your vehicle is
facing and where you have the HUD dimmer control
set. If you are facing a dark object or a heavily
shaded area, your HUD may anticipate that you are
entering a dark area and may begin to dim.
It is possible for sunlight to enter the HUD making
it difficult to see the image. The display will return
to normal when the sunlight is no longer entering
the HUD.
3-22

Outlet Adjustment
Use the tab located on the air outlets to change the
direction of the airow.
Operation Tips

Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may
block the ow of air into your vehicle.
Use of non-GM approved hood deectors may
adversely affect the performance of the system.
Keep the area around the base of the instrument
panel console and air path under the seats clear
of objects to help circulate the air inside of
your vehicle more effectively.
Passenger Compartment Air Filter
The passenger compartment air lter removes certain
odor and particles from the air including pollen and dust
particles. Reductions in airow, which may occur
more often in dusty areas, indicate that the lter may
need to be replaced. SeeScheduled Maintenance
on page 6-4for information on how often to replace the
lter.Notice:Driving without a passenger compartment
air lter in place can cause water and small
particles, like paper and leaves, to be pulled into
your climate control system which may cause
damage to it. Make sure you always replace the old
lter with a new one.
The passenger compartment air lter is located on the
passenger side of the engine compartment near the
battery. SeeEngine Compartment Overview on
page 5-12.
To check or replace the air lter, do the following:
1. Disengage the passenger compartment air lter
housing cover retainer clips (1).
2. Remove the passenger compartment air lter
housing cover.
3-31

3. Remove the passenger compartment air lter from
the housing.
4. Insert the new lter into the housing.
5. Reinstall the passenger compartment air lter
housing cover.
6. Engage the passenger compartment air lter
housing cover retainer clips.
Warning Lights, Gages, and
Indicators
This part describes the warning lights and gages that
may be on your vehicle. The pictures will help you
locate them.Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause
an expensive repair or replacement. Paying attention to
your warning lights and gages could also save you
or others from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle’s functions. As you will
see in the details on the next few pages, some
warning lights come on briey when you start the
engine just to let you know they are working. If you are
familiar with this section, you should not be alarmed
when this happens.
Gages can indicate when there may be or is a problem
with one of your vehicle’s functions. Often gages
and warning lights work together to let you know when
there is a problem with your vehicle.
When one of the warning lights comes on and stays on
when you are driving, or when one of the gages
shows there may be a problem, check the section that
tells you what to do about it. Please follow this
manual’s advice. Waiting to do repairs can be
costly — and even dangerous. So please get to know
your warning lights and gages. They are a big help.
Your vehicle has a Driver Information Center that works
along with the warning lights and gages. SeeDriver
Information Center (DIC) on page 3-49.
3-32

{CAUTION:
If the airbag readiness light ever comes on
when you have turned off the passenger’s
frontal airbag and side impact airbag
(if equipped), it means that something may
be wrong with the airbag system. The
passenger’s frontal airbag and side impact
airbag (if equipped) could inate even though
the switch is off. If this ever happens, do not
let anyone whom the national government has
identied as a member of a passenger airbag
risk group sit in the passenger’s position
(for example, do not secure a rear-facing child
restraint in your vehicle) until you have your
vehicle serviced. SeeAirbag Off Switch on
page 1-48.
Voltmeter Gage
The voltmeter shows the
voltage output of your
battery. When the engine
is running, it shows
the voltage output of the
charging system.
The reading will change as the rate of charge changes
(with engine speed, for example), but if the voltmeter
reads at 9 volts or below, your instrument panel cluster
and other systems may shut down. The Driver
Information Center (DIC) will read BATTERY VOLTAGE
LOW when your vehicle is at 10 volts or below. Have
it checked right away. Driving with the voltmeter reading
at 10 volts or below could drain your battery and
disable your vehicle.
3-37