2004 CHEVROLET BLAZER ECU

At Least Twice a Year
Restraint System Check
Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced.
Also look for any opened or broken air bag coverings,
and have them repaired or replaced. (The air bag
system does not need regular maintenance.)
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace
blade inserts that appear worn or damaged or that
streak or miss areas of the windshield. Also see
Cleaning the Outside of Your Vehicle on page 5-92.
Spare Tire Check
At least twice a year, after the monthly ination check of
the spare tire determines that the spare is inated to
the correct tire ination pressure, make sure that
the spare tire is stored securely. Push, pull, and then try
to rotate or turn the tire. If it moves, use the wheel
wrench to tighten the cable. SeeChanging a Flat Tire
on page 5-76.
Weatherstrip Lubrication
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth. During very cold,
damp weather more frequent application may be
required. SeePart D: Recommended Fluids and
Lubricants on page 6-33.
Manual Transmission Check
Check the transmission uid level; add if needed. See
Manual Transmission Fluid on page 5-22. Check
for leaks. A uid leak is the only reason for uid loss.
Have the system inspected and repaired if needed.
Automatic Transmission Check
Check the transmission uid level; add if needed. See
Automatic Transmission Fluid on page 5-19. A uid loss
may indicate a problem. Check the system and repair
if needed.
Hydraulic Clutch System Check
Check the uid level in the clutch reservoir. See
Hydraulic Clutch on page 5-23.
A uid loss in this system could indicate a problem.
Have the system inspected and repaired at once.
6-27

Roadside Assistance Program
Security While You Travel
1-800-CHEV-USA (243-8872)
As the proud owner of a new Chevrolet vehicle, you are
automatically enrolled in the Chevrolet Roadside
Assistance program. This value-added service is
intended to provide you with peace of mind as you drive
in the city or travel the open road. Chevrolet’s Roadside
Assistance toll-free number is staffed by courteous
and capable Roadside Assistance Representatives who
are available 24 hours a day, 365 days a year.
We will provide the following services during the
Bumper-to-Bumper warranty period, at no expense
to you:
Fuel Delivery:Delivery of enough fuel
($5 maximum) for the customer to get to the
nearest service station.
Lock-out Service (identication required):
Replacement keys or locksmith service will
be covered at no charge if you are unable to gain
entry into your vehicle. Delivery of the replacement
key will be covered within 10 miles.
Emergency Tow:Tow to the nearest dealership for
warranty service or in the event of a
vehicle-disabling accident. Assistance when the
vehicle is mired in sand, mud or snow.
Flat Tire Change:Installation of a spare tire will be
covered at no charge. (The customer is responsible
for the repair or replacement of the tire if not
covered by a warrantable failure.)
Jump Start:No-start occurrences which require a
battery jump start will be covered at no charge.
Dealer Locator Service
In many instances, mechanical failures are covered
under Chevrolet’s Bumper-to-Bumper warranty.
However, when other services are utilized, our Roadside
Assistance Representatives will explain any payment
obligations you might incur.
7-6

For prompt and efficient assistance when calling, please
provide the following to the Roadside Assistance
Representative:
Your name, home address, and home telephone
number
Telephone number of your location
Location of the vehicle
Model, year, color, and license plate number
Mileage, Vehicle Identication Number and delivery
date of the vehicle
Description of the problem
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 (1-800-234-8872), 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
Chevrolet has always exemplied quality and value in
its offering of motor vehicles. 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.
7-7

Center Rear Passenger Position, Safety Belts.....1-26
Center Seat Positions, Child Restraints..............1-51
Certication/Tire Label.....................................4-58
Chains, Tires..................................................5-74
Charging System Light....................................3-26
Check
Engine Light...............................................3-30
Gages Warning Light...................................3-35
Checking Brake Fluid......................................5-40
Checking Coolant............................................5-25
Checking Engine Oil........................................5-13
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-95
Child Restraints
Center Seat Positions..................................1-51
Child Restraint Systems...............................1-37
Infants and Young Children...........................1-34
Lower Anchorages and Top Tethers
for Children (LATCH System).....................1-44
Older Children.............................................1-31
Securing a Child Restraint Designed
for the LATCH System..............................1-46
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-46
Securing a Child Restraint in the
Right Front Seat Position..........................1-48
Top Strap...................................................1-41
Top Strap Anchor Location............................1-43
Where to Put the Restraint...........................1-40
Cigarette Lighter.............................................3-17Cleaning
Inside of Your Vehicle..................................5-90
Outside of Your Vehicle................................5-92
Underbody Maintenance...............................5-95
Weatherstrips..............................................5-92
Cleaning Aluminum Wheels..............................5-94
Cleaning Exterior Lamps/Lenses.......................5-93
Cleaning Fabric/Carpet....................................5-90
Cleaning Glass Surfaces..................................5-91
Cleaning Interior Plastic Components.................5-91
Cleaning Leather............................................5-91
Cleaning the Mirror.........................................2-43
Cleaning the Photocells...................................2-43
Cleaning the Top of the Instrument Panel...........5-91
Cleaning the Windshield, Backglass and
Wiper Blades..............................................5-94
Cleaning Tires................................................5-94
Cleaning Vinyl................................................5-90
Cleaning Wood Panels....................................5-91
Climate Control System...................................3-17
Outlet Adjustment........................................3-20
Clutch, Hydraulic.............................................5-23
Column Shift Lever.........................................2-36
Compact Spare Tire........................................5-88
Console Shift Lever.........................................2-37
Content Theft-Deterrent....................................2-16
Control of a Vehicle.......................................... 4-7
Convenience Net............................................2-59
Convenience System, Rear..............................2-60
3

Coolant
Engine Temperature Gage............................3-29
Heater, Engine............................................2-22
Cooling.........................................................3-18
Cooling System..............................................5-29
Cruise Control.................................................. 3-9
Current and Past Model Order Forms................7-12
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 Program for Persons with
Disabilities................................................ 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............................................. 4-3
Defogging and Defrosting.................................3-19
Dinghy Towing................................................4-47Directing the Airow........................................3-18
Doing Your Own Service Work........................... 5-3
Dolly Towing (Two-Wheel Drive Vehicles)...........4-52
Dolly Towing (Vehicles with Automatic
Transfer Case)............................................4-49
Dolly Towing (Vehicles with Electronic
Transfer Case)............................................4-50
Dome Lamps.................................................3-16
Door
Locks.......................................................... 2-7
Power Door Locks......................................... 2-8
Programmable Automatic Door Locks............... 2-8
Rear Door Security Locks.............................2-10
Driver
Position, Safety Belt.....................................1-13
Driver Behavior................................................ 4-2
Driver Information Center (DIC).........................2-54
Driving
At Night.....................................................4-30
City...........................................................4-35
Defensive..................................................... 4-3
Drunken....................................................... 4-4
Environment................................................. 4-2
Freeway.....................................................4-36
Hill and Mountain Roads..............................4-38
In Rain and on Wet Roads...........................4-32
Winter........................................................4-40
Driving Across an Incline..................................4-26
Driving Downhill..............................................4-24
Driving in Mud, Sand, Snow or Ice....................4-28
4

Inspection (cont.)
Fuel System...............................................6-31
Part C - Periodic Maintenance.......................6-31
Steering, Suspension and Front Drive
Axle Boot and Seal..................................6-31
Throttle System...........................................6-32
Transfer Case and Front Axle
(Four-Wheel Drive)...................................6-32
Installing a Garage Door Opener.......................2-50
Instrument Panel
Cluster.......................................................3-22
Overview..................................................... 3-2
Instrument Panel Fuse Block............................5-99
Instrumental Panel Brightness...........................3-15
Interior Lamps................................................3-15
J
Jump Starting.................................................5-43
K
Key Lock Cylinders Service..............................6-28
Key Release Button........................................2-20
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Lamps
Exterior......................................................3-12
Interior.......................................................3-15
Lamps On Reminder.......................................3-13
Lap Belt................................................1-21, 1-27
Lap-Shoulder Belt...........................................1-14
LATCH System
Child Restraints...........................................1-44
Securing a Child Restraint Designed for the
LATCH System........................................1-46
Leaving Your Vehicle.......................................2-10
Leaving Your Vehicle With the Engine Running......2-38
Light
Air Bag Readiness.......................................3-25
Anti-Lock Brake System Warning...................3-29
Brake System Warning.................................3-28
Charging System.........................................3-26
Check Gages Warning.................................3-35
Gate Ajar...................................................3-35
Low Fuel Warning.......................................3-36
Malfunction Indicator....................................3-30
Safety Belt Reminder...................................3-24
Security.....................................................3-34
Service Four-Wheel-Drive Warning Light.........3-34
Tow/Haul Mode...........................................3-35
Up-Shift.....................................................3-27
Loading Your Vehicle.......................................4-54
Loading Your Vehicle for Off-Road Driving..........4-16
8

Locking Rear Axle...........................................4-10
Lockout Protection..........................................2-10
Locks
Door........................................................... 2-7
Leaving Your Vehicle....................................2-10
Lockout Protection.......................................2-10
Power Door.................................................. 2-8
Programmable Automatic Door Locks............... 2-8
Rear Door Security Locks.............................2-10
Long Trip/Highway Denition.............................. 6-6
Long Trip/Highway Intervals............................... 6-6
Long Trip/Highway Scheduled Maintenance........6-18
Loss of Control...............................................4-14
Low Fuel Warning Light...................................3-36
Luggage Carrier..............................................2-57
Lumbar
Power Controls............................................. 1-3
M
Maintenance Schedule
At Each Fuel Fill.........................................6-26
At Least Once a Month................................6-26
At Least Once a Year..................................6-28
At Least Twice a Year..................................6-27
Brake System Inspection..............................6-32
Engine Cooling System Inspection.................6-31
Exhaust System Inspection...........................6-31
Fuel System Inspection................................6-31Maintenance Schedule (cont.)
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Long Trip/Highway Scheduled Maintenance.....6-18
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-35
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-26
Part C - Periodic Maintenance Inspections......6-31
Part D - Recommended Fluids
and Lubricants.........................................6-33
Part E - Maintenance Record........................6-37
Selecting the Right Schedule.......................... 6-5
Short Trip/City Scheduled Maintenance............. 6-6
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-31
Throttle System Inspection............................6-32
Transfer Case and Front Axle
(Four-Wheel Drive) Inspection....................6-32
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-71
Making Turns.................................................4-68
Malfunction Indicator Light................................3-30
Manual Seats................................................... 1-2
Manual Transmission.......................................2-21
Fluid..........................................................5-22
Operation...................................................2-26
Manual Transmission Check.............................6-27
Memory Seat.................................................2-64
9

Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-26
Part C - Periodic Maintenance Inspections..........6-31
Part D - Recommended Fluids and
Lubricants..................................................6-33
Part E - Maintenance Record...........................6-37
Passing.................................................4-13, 4-68
Passlock
®......................................................2-18
Payload.........................................................4-60
Plan Ahead When Possible................................ 7-8
Playing a Cassette Tape..................................3-55
Playing a CD.................................3-47, 3-58, 3-66
Playing a Specic Loaded CD..........................3-68
Playing the Radio...................3-38, 3-41, 3-49, 3-60
Power
Door Locks.................................................. 2-8
Electrical System.........................................5-98
Lumbar Controls........................................... 1-3
Seat............................................................ 1-3
Steering Fluid.............................................5-36
Windows....................................................2-12
Power Steering...............................................4-10
Programmable Automatic Door Locks.................. 2-8
Programming the HomeLink
®Transmitter...........2-46
Q
Questions and Answers About Safety Belts.........1-12
R
Radiator Pressure Cap....................................5-26
Radio Data System (RDS)...............3-44, 3-52, 3-63
Radio Messages.............................3-40, 3-47, 3-55
Radios..........................................................3-37
AM-FM Radio.............................................3-38
Care of Your Cassette Tape Player................3-72
Care of Your CD Player...............................3-74
Care of Your CDs........................................3-74
Radio with Cassette and CD.........................3-49
Radio with CD............................................3-41
Radio with Six-Disc CD................................3-60
Setting the Time for Radios with Radio
Data Systems (RDS)................................3-38
Setting the Time for Radios without
Radio Data Systems (RDS).......................3-37
Theft-Deterrent............................................3-72
Understanding Reception..............................3-72
RDS Messages..............................3-46, 3-54, 3-65
Rear Axle......................................................5-47
Locking......................................................4-10
Rear Door Security Locks................................2-10
Rear Safety Belt Comfort Guides......................1-28
Rear Seat Operation......................................... 1-6
Rear Seat Outside Passenger Positions.............1-23
Rear Seat Passengers, Safety Belts..................1-23
Rear Storage Area..........................................2-59
Rear Window.................................................2-13
Rear Window Defogger....................................3-20
11