2005 CHEVROLET COBALT ECU

Disarming the System
You can disarm the system by doing any one of the
following:
Press the remote keyless entry transmitter unlock
button.
Turn the ignition on.
If the system is armed and the trunk is opened using
the trunk release button on the transmitter, the system
will temporarily disarm itself and re-arm when the
trunk has been closed. This allows the you to exit the
vehicle, lock the doors using the transmitter, and
open the trunk using the transmitter without having to
disarm and re-arm the system.
Once the system is disarmed, the security light will stop
ashing.
How the System Alarm is Activated
If the system is armed, it can be activated by either:
Opening the driver’s door or trunk. This will cause
a ten second pre-alarm chirp followed by a
thirty second full alarm of horn and lights.
Opening any other door. This will immediately cause
a full alarm of horn and lights for thirty seconds.
When an alarm event has nished, the system will
re-arm itself automatically.
How to Turn Off the System Alarm
To turn off the system alarm, do one of the following:
Press the lock button on the remote keyless
entry transmitter. The system will then re-arm itself.
Press the unlock button on the remote keyless entry
transmitter. This will also disarm the system.
Insert the key in the ignition and turn it on. This will
also disarm the system.
Simulated Armed Mode
If you choose not to arm the system or if proper arming
cannot be completed, the Content Theft Deterrent
system will ash the security light once every three
seconds after a one minute delay with all the doors
closed. This ashing serves as a visual deterrent;
however, the system is not armed.
How to Detect a Tamper Condition
If you hear three chirps when you press the unlock, lock,
or trunk release buttons on the remote keyless
transmitter, it means that the content theft security
system alarm was activated previously.
2-15

Passive Arming
If passive arming is enabled through the Driver
Information Center (DIC), the system will arm itself
60 seconds after cycling the ignition off and closing
all doors.
Passlock®
Your vehicle is equipped with the Passlock®
theft-deterrent system.
Passlock®is a passive theft-deterrent system. Passlock®
enables fuel if the ignition lock cylinder is turned with
a valid key. If a correct key is not used or the ignition
lock cylinder is tampered with, fuel is disabled.
During normal operation, the security light will go off
approximately three seconds after the key is turned to
RUN following an engine start. The security light is
located on the instrument panel cluster. SeeInstrument
Panel Cluster on page 3-22.
If the engine stalls and the security light ashes, wait
until the light stops ashing before trying to restart
the engine. Remember to release the key from START
as soon as the engine starts.
If the engine is running and the security light comes on,
you will be able to restart the engine if you turn the
engine off. However, your Passlock
®system is
not working properly and must be serviced by yourdealer. Your vehicle is not protected by Passlock
®at
this time. See your dealer for service. Or seeRoadside
Assistance Program on page 7-6for more information.
You may also want to check the fuses. SeeFuses
and Circuit Breakers on page 5-91.
Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an elaborate
break-in. But it will perform better in the long run if
you follow these guidelines:
Do not drive at any one speed, fast or slow, for
the rst 500 miles (805 km). Do not make
full-throttle starts.
Avoid making hard stops for the rst 200 miles
(322 km) or so. During this time your new brake
linings are not yet broken in. Hard stops with new
linings can mean premature wear and earlier
replacement. Follow this breaking-in guideline
every time you get new brake linings.
Do not tow a trailer during break-in. SeeTowing a
Trailer (Manual Transaxle) on page 4-37or
Towing a Trailer (Automatic Transaxle) on
page 4-38for more information.
2-16

OnStar®System
OnStar®uses global positioning system (GPS) satellite
technology, wireless communications, and call centers
to provide you with a wide range of safety, security,
information, and convenience services.
A complete OnStar
®user’s guide and the terms and
conditions of the OnStar®Subscription Service
Agreement are included in the vehicle’s glove box
literature. For more information, visit www.onstar.com or
www.onstarcanada.com. Contact OnStar
®at
1-888-4-ONSTAR (1-888-466-7827), or press the
OnStar
®button to speak to an OnStar®advisor 24 hours
a day, 7 days a week.
Terms and conditions of the Subscription Service
Agreement can be found at www.onstar.com or
www.onstarcanada.com.
OnStar®Services
For new vehicles equipped with OnStar®, the Safe and
Sound Plan is included for the rst year. You can
extend this plan beyond the rst year, or upgrade to the
Directions and Connections Plan to meet your needs.
For more information, press the OnStar
®button to speak
with an advisor.
Safe and Sound Plan

Advanced Automatic Collision Notication
Automatic Notication of Airbag Deployment
Emergency Services
Roadside Assistance
Stolen Vehicle Tracking
AccidentAssist
Remote Door Unlock/Vehicle Alert
Remote Diagnostics
Online Concierge
Directions and Connections Plan

All Safe and Sound Plan Services
Driving Directions
RideAssist
Information and Convenience Services
2-34

Convenience Net
Your vehicle may have a convenience net. You will see
it inside the back wall of the trunk. Put small loads
behind the net. It can help keep them from falling over
during sharp turns or quick starts and stops.
Unclip a corner of the convenience net to t larger
objects behind the net, then reclip it to secure them in
place. The net is not for larger, heavier loads. Store
them in the trunk as far forward as you can.
You can unhook the net so that it will lie at when you
are not using it.
Sunroof
Your vehicle may be
equipped with a power
sunroof. The switch
that operates it is located
on the headliner.To open or close the sunroof, the ignition must be on,
or turned to ACC, or Retained Accessory Power
(RAP) must be active. SeeRetained Accessory Power
(RAP) on page 2-19.
Press and hold the switch rearward to open the glass
panel to the vent position. Press and hold the switch
rearward a second time to open the sunroof. If the
sunshade is closed, it will open automatically with the
sunroof.
To close the sunroof, press the switch forward and hold
it until the sunroof is closed. The sunroof will stop if
the switch is released. The sunshade must be closed
manually.
The sunroof glass panel cannot be opened or closed if
the vehicle has an electrical failure.
Notice:If you force the sunshade forward of the
sliding glass panel, damage will occur and the
sunroof may not open or close properly. Always
close the glass panel before closing the sunshade.
2-36

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-6
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-7
Turn and Lane-Change Signals........................3-8
Headlamp High/Low-Beam Changer..................3-8
Flash-to-Pass.................................................3-8
Windshield Wipers..........................................3-9
Windshield Washer.......................................3-10
Cruise Control..............................................3-10
Headlamps..................................................3-13
Wiper Activated Headlamps............................3-14
Headlamps on Reminder................................3-14
Daytime Running Lamps (DRL).......................3-14
Fog Lamps..................................................3-15
Instrument Panel Brightness...........................3-15
Dome Lamp.................................................3-15
Entry/Exit Lighting.........................................3-16
Mirror Reading Lamps...................................3-16
Battery Run-Down Protection..........................3-16
Accessory Power Outlets...............................3-16
Ashtrays and Cigarette Lighter........................3-17Climate Controls............................................3-17
Climate Control System.................................3-17
Outlet Adjustment.........................................3-20
Warning Lights, Gages, and Indicators............3-21
Instrument Panel Cluster................................3-22
Speedometer and Odometer...........................3-24
Tachometer.................................................3-24
Safety Belt Reminder Light.............................3-24
Airbag Readiness Light..................................3-25
Charging System Light..................................3-26
Up-Shift Light...............................................3-26
Brake System Warning Light..........................3-27
Anti-Lock Brake System Warning Light.............3-28
Enhanced Traction System Warning Light.........3-28
Engine Coolant Temperature Warning Light......3-29
Malfunction Indicator Lamp.............................3-30
Oil Pressure Light.........................................3-32
Security Light...............................................3-33
Fog Lamp Light............................................3-33
Highbeam On Light.......................................3-33
Fuel Gage...................................................3-34
Boost Gage.................................................3-34
Section 3 Instrument Panel
3-1

{CAUTION:
Do not keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches re. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice:Lack of proper engine oil maintenance may
damage the engine. The repairs would not be
covered by your warranty. Always follow the
maintenance schedule in this manual for changing
engine oil.
Security Light
This light ashes when the
vehicle security system is
activated.
Fog Lamp Light
The fog lamps light will
come on when the fog
lamps are in use.
The light will go out when the fog lamps are turned off.
SeeFog Lamps on page 3-15for more information.
Highbeam On Light
This light will come on
when the high-beam
headlamps are in use.
SeeHeadlamp High/Low-Beam Changer on page 3-8.
3-33

SECURITY
If your vehicle has the remote keyless entry system, this
feature allows you to select the method used to arm
the vehicle’s security system. When SECURITY appears
on the display, press the reset button to scroll through
the available settings:
RKE (Remote Keyless Entry) (default):The content
theft-deterrent system will arm when the lock button
on the remote keyless entry transmitter is pressed
or when the power door lock switch is pressed.
PASSIVE:The content theft-deterrent system will arm
itself 60 seconds after the ignition has been turned
off and all of the doors have been closed.
SeeContent Theft-Deterrent on page 2-14for more
information.
Choose one of the available settings and press the
information button to select it and move on to the next
feature.
LANGUAGE
This feature allows you to select the language in which
the DIC will display. Press the reset button to scroll
through the available settings:
ENGLISH (default):The DIC will display all information
in English.
FRENCH:The DIC will display all information in
French.
SPANISH:The DIC will display all information in
Spanish.
GERMAN:The DIC will display all information in
German.
Choose one of the available settings and press the
information button to select it and exit out of the
personalization menu mode.
3-44

XM™ Radio Messages (cont’d)
Radio Display
MessageCondition Action Required
No Info Category Name not
availableNo category information is available at this time on this
channel. The system is working properly.
No Info No Text/Informational
message availableNo text or informational messages are available at this
time on this channel. The system is working properly.
Not Found No channel available for
the chosen categoryThere are no channels available for the selected category.
The system is working properly.
XM Lock Theft lock active The XM™ receiver in the vehicle may have previously
been in another vehicle. For security purposes, XM™
receivers cannot be swapped between vehicles. If this
message appears after having your vehicle serviced, check
with your GM dealer.
Radio ID Radio ID label (channel 0) If tuned to channel 0, this message will alternate with the
XM™ Radio eight digit radio ID label. This label is needed
to activate the service.
Unknown Radio ID not known
(should only be if
hardware failure)If this message is received when tuned to channel 0, there
may be a receiver fault. Consult with your GM dealer.
Check DAB Hardware failure If this message does not clear within a short period of time,
the receiver may have a fault. Consult with your GM
dealer.
3-57