ECU CHEVROLET COBALT 2005 1.G Service Manual

Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-23for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank and add the proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not forget to
check the spare tire. SeeTires on page 5-54for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-70.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation on
page 5-63.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-26.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. On automatic transaxle vehicles, try to start the
engine in each gear. The vehicle should start only in
PARK (P) or NEUTRAL (N). If the vehicle starts in
any other position, your vehicle needs service.
On manual transaxle vehicles, put the shift lever in
NEUTRAL (N), push the clutch down halfway, and try
to start the engine. The vehicle should start only
when the clutch is pushed down all the way to the
oor. If the vehicle starts when the clutch is not
pushed all the way down, your vehicle needs service.
6-9

While we hope you never have the occasion to use our
service, it is added security while traveling for you
and your family. Remember, we are only a phone call
away. Chevrolet Roadside Assistance:
1-800-CHEV-USA (1-800-243-8872), text telephone
(TTY) users, call 1-888-889-2438.
Chevrolet reserves the right to limit services or
reimbursement to an owner or driver when, in
Chevrolet’s judgement, the claims become excessive in
frequency or type of occurrence.
Roadside Assistance is not part of or included in the
coverage provided by the New Vehicle Limited Warranty.
Chevrolet reserves the right to make any changes or
discontinue the Roadside Assistance program at
any time without notication.
Canadian Roadside Assistance
Vehicles purchased in Canada have an extensive
roadside assistance program accessible from anywhere
in Canada or the United States. Please refer to the
Warranty and Owner Assistance Information book.
Courtesy Transportation
To enhance your ownership experience, we and our
participating dealers are proud to offer Courtesy
Transportation, a customer support program for new
vehicles.
The Courtesy Transportation program is offered to retail
purchase/lease customers in conjunction with the
Bumper-to-Bumper coverage provided by the New
Vehicle Limited Warranty. Several transportation options
are available when warranty repairs are required. This will
reduce your inconvenience during warranty repairs.
Scheduling Service Appointments
When your vehicle requires warranty service, you should
contact your dealer and request an appointment. By
scheduling a service appointment and advising
your service consultant of your transportation needs,
your dealer can help minimize your inconvenience.
If your vehicle cannot be scheduled into the service
department immediately, keep driving it until it can be
scheduled for service, unless, of course, the problem is
safety-related. If it is, please call your dealership, let
them know this, and ask for instructions.
If the dealer requests that you simply drop the vehicle off
for service, you are urged to do so as early in the work
day as possible to allow for the same day repair.
7-7

Charging System Light....................................3-26
Check
Engine Light...............................................3-30
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-87
Child Restraints
Child Restraint Systems...............................1-34
Infants and Young Children...........................1-31
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-40
Older Children.............................................1-28
Securing a Child Restraint Designed for
the LATCH System...................................1-42
Securing a Child Restraint in a Rear
Seat Position...........................................1-43
Securing a Child Restraint in the Right
Front Seat Position...................................1-45
Top Strap...................................................1-38
Top Strap Anchor Location............................1-39
Where to Put the Restraint...........................1-37
Cigarette Lighter.............................................3-17
Cleaning
Aluminum or Chrome-Plated Wheels..............5-86
Exterior Lamps/Lenses.................................5-85
Fabric/Carpet..............................................5-83Cleaning (cont.)
Finish Care.................................................5-85
Inside of Your Vehicle..................................5-81
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-84
Leather......................................................5-83
Tires..........................................................5-87
Underbody Maintenance...............................5-87
Washing Your Vehicle...................................5-85
Weatherstrips..............................................5-84
Windshield and Wiper Blades........................5-86
Climate Control System...................................3-17
Outlet Adjustment........................................3-20
Clutch, Hydraulic.............................................5-23
Comfort Guides, Rear Safety Belt.....................1-25
Compact Spare Tire........................................5-80
Content Theft-Deterrent....................................2-14
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-36
Coolant
Engine Temperature Warning Light.................3-29
Heater, Engine............................................2-20
Surge Tank Pressure Cap.............................5-29
Cooling System..............................................5-31
3

Cruise Control................................................3-10
Cupholder(s)..................................................2-35
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the
Canadian Government..............................7-11
Reporting Safety Defects to the
United States Government.........................7-10
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-14
Defensive Driving............................................. 4-2
Delayed Locking............................................... 2-8
Differential, Limited-Slip..................................... 4-9
Doing Your Own Service Work........................... 5-4
Dome Lamp...................................................3-15Door
Automatic Door Locks.................................... 2-9
Delayed Locking........................................... 2-8
Locks.......................................................... 2-7
Power Door Locks......................................... 2-8
Programmable Automatic Door Unlock.............. 2-9
Rear Door Security Locks............................... 2-9
Driver
Position, Safety Belt.....................................1-15
Seat Height Adjuster...................................... 1-3
Driver Information Center (DIC).........................3-35
DIC Operation and Displays..........................3-35
DIC Vehicle Personalization..........................3-40
DIC Warnings and Messages........................3-37
Driver’s Storage Compartment..........................2-35
Driving
At Night.....................................................4-16
City...........................................................4-20
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-21
Hill and Mountain Roads..............................4-23
In Rain and on Wet Roads...........................4-17
Rocking Your Vehicle to Get it Out.................4-30
Winter........................................................4-25
4

Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-14
Hydraulic Clutch.............................................5-23
I
Ignition Positions.............................................2-17
Infants and Young Children, Restraints...............1-31
Ination -- Tire Pressure..................................5-61
Instrument Panel
Overview..................................................... 3-4
Instrument Panel (I/P)
Brightness..................................................3-15
Cluster.......................................................3-22
J
Jump Starting.................................................5-40
K
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Labelling, Tire Sidewall....................................5-56
Lamps
Battery Run-Down Protection.........................3-16
Dome........................................................3-15
Fog ...........................................................3-15
Mirror Reading............................................3-16
LATCH System
Child Restraints...........................................1-40
Securing a Child Restraint Designed
for the LATCH System..............................1-42
Light
Airbag Readiness........................................3-25
Anti-Lock Brake System Warning...................3-28
Brake System Warning.................................3-27
Charging System.........................................3-26
Engine Coolant Temperature Warning.............3-29
Enhanced Traction System (ETS)
Warning Light..........................................3-28
Fog Lamp..................................................3-33
Highbeam On.............................................3-33
Malfunction Indicator....................................3-30
Oil Pressure...............................................3-32
Safety Belt Reminder...................................3-24
Security.....................................................3-33
Up-Shift.....................................................3-26
7

Lighting
Entry/Exit...................................................3-16
Limited-Slip Differential...................................... 4-9
Loading Your Vehicle.......................................4-30
Lockout Protection..........................................2-10
Locks
Automatic Door Locks.................................... 2-9
Delayed Locking........................................... 2-8
Door........................................................... 2-7
Lockout Protection.......................................2-10
Power Door.................................................. 2-8
Programmable Automatic Door Unlock.............. 2-9
Rear Door Security Locks............................... 2-9
Loss of Control...............................................4-14
Lumbar
Manual Controls............................................ 1-3
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-8
At Least Once a Month.................................. 6-9
At Least Once a Year.................................... 6-9
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-15Maintenance Schedule (cont.)
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-14
Owner Checks and Services........................... 6-8
Recommended Fluids and Lubricants.............6-12
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-30
Manual Lumbar Controls.................................... 1-3
Manual Seats................................................... 1-2
Manual Transaxle
Fluid..........................................................5-22
Operation...................................................2-24
Manual Windows............................................2-12
Message
DIC Warnings and Messages........................3-37
Mirror Reading Lamps.....................................3-16
Mirrors
Automatic Dimming Rearview........................2-32
Manual Rearview Mirror................................2-32
Outside Convex Mirror.................................2-33
Outside Manual Mirror..................................2-32
Outside Power Mirrors..................................2-33
Outside Remote Control Mirror......................2-32
MyGMLink.com................................................ 7-3
8

R
Radios..........................................................3-45
Care of Your CD Player...............................3-76
Care of Your CDs........................................3-76
Radio with CD............................3-46, 3-51, 3-60
Setting the Time for Radios with
Radio Data Systems (RDS).......................3-46
Setting the Time for Radios without
Radio Data Systems (RDS).......................3-45
Theft-Deterrent............................................3-74
Understanding Reception..............................3-75
Rear Door Security Locks.................................. 2-9
Rear Safety Belt Comfort Guides......................1-25
Rear Seat Passengers, Safety Belts..................1-22
Rearview Mirror, Automatic Dimming..................2-32
Rearview Mirrors.............................................2-32
Reclining Seatbacks.......................................... 1-4
Recommended Fluids and Lubricants.................6-12
Recreational Vehicle Towing.............................4-35
Remote Keyless Entry System............................ 2-3
Remote Keyless Entry System, Operation............ 2-4
Removing the Flat Tire and Installing
the Spare Tire.............................................5-75
Removing the Spare Tire and Tools...................5-71
Replacement Bulbs.........................................5-53Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking the Restraint Systems....................1-57
Replacing Restraint System Parts
After a Crash..........................................1-58
Retained Accessory Power (RAP)......................2-19
Right Front Passenger Position, Safety Belts......1-22
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle to Get it Out....................4-30
Running the Engine While Parked.....................2-31
S
Safety Belt
Pretensioners..............................................1-27
Reminder Light............................................3-24
Safety Belts
Care of......................................................5-84
Driver Position............................................1-15
How to Wear Safety Belts Properly................1-14
10

Safety Belts (cont.)
Questions and Answers About Safety Belts.....1-14
Rear Safety Belt Comfort Guides for
Children and Small Adults.........................1-25
Rear Seat Passengers.................................1-22
Right Front Passenger Position......................1-22
Safety Belt Extender....................................1-27
Safety Belt Use During Pregnancy.................1-22
Safety Belts Are for Everyone......................... 1-9
Shoulder Belt Height Adjuster........................1-21
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seats
Driver Seat Height Adjuster............................. 1-3
Easy Entry Seat............................................ 1-7
Head Restraints............................................ 1-6
Heated Seats............................................... 1-4
Manual........................................................ 1-2
Manual Lumbar............................................. 1-3
Reclining Seatbacks...................................... 1-4
Split Folding Rear Seat.................................. 1-8
Securing a Child Restraint
Designed for the LATCH System...................1-42
Rear Seat Position......................................1-43
Right Front Seat Position..............................1-45Security Light.................................................3-33
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-5
Doing Your Own Work................................... 5-4
Engine Soon Light.......................................3-30
Publications Ordering Information...................7-11
Servicing Your Airbag-Equipped Vehicle..............1-57
Setting the Time
Radios with Radio Data Systems (RDS).........3-46
Radios without Radio Data Systems (RDS).....3-45
Sheet Metal Damage.......................................5-87
Shifting Into Park (P).......................................2-28
Shifting Out of Park (P)...................................2-29
Shoulder Belt Height Adjuster...........................1-21
Signals, Turn and Lane-Change.......................... 3-8
Spare Tire
Compact....................................................5-80
Installing....................................................5-75
Removing...................................................5-71
Storing.......................................................5-78
Specications, Capacities.................................5-97
Speedometer..................................................3-24
Split Folding Rear Seat..................................... 1-8
Starting Your Engine.......................................2-19
11