ECU CHEVROLET AVALANCHE 2004 1.G Repair Manual

Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench dealer can assist you
with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-13.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-16for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-26for 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 tires and make sure tires are
inated to the correct pressures. Do not forget to check
your spare tire. SeeTires on page 5-68for further
details. Check to make sure the spare tire is stored
securely. Push, pull and then try to rotate or turn
the spare tire. If it moves, tighten it. SeeChanging a
Flat Tire on page 5-90.
6-10

GM Mobility Program for Persons
with Disabilities
This program, available to
qualied applicants, can
reimburse you up to $1,000
toward eligible aftermarket
driver or passenger
adaptive equipment that
may be required for your
vehicle, such as hand
controls, wheelchair/
scooter lifts, etc.).
This program can also provide you with free resource
information, such as area driver assessment centers and
mobility equipment installers. The offer is available for
a limited period of time from the date of vehicle
purchase/lease. For more details, or to determine your
vehicle’s eligibility, see your GM dealer or call the
GM Mobility Assistance Center at 1-800-323-9935. Text
telephone (TTY) users, call 1-800-833-9935.
GM of Canada also has a Mobility Program. Call
1-800-GM-DRIVE (463-7483) for details. All TTY users
call 1-800-263-3830.
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.
7-6

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.
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.
7-7

C
California Fuel.................................................. 5-6
Canada – Customer Assistance.......................... 7-5
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-8
Capacities and Specications..........................5-128
Carbon Monoxide...........2-14, 2-23, 2-47, 4-44, 4-68
Care of
Safety Belts..............................................5-114
Your CD and DVD Player...........................3-116
Your CDs and DVDs..................................3-116
Cargo Area, All-Weather..................................2-78
Cargo Area Floor Drains..................................2-82
Cargo Cover Panels........................................2-67
Cargo Lamps.................................................3-19
Cargo Panel Storage System............................2-70
Cargo Tie Downs............................................2-77
CD Messages........................................3-85, 3-99
Center Console Storage Area...........................2-66
Center Front Passenger Position, Safety Belts....1-23
Center High-Mounted Stoplamp (CHMSL)...........5-65
Center Instrument Panel Fuse Block................5-122
Center Overhead Console................................2-65
Chains, Tire...................................................5-88CHANGE ENGINE OIL....................................3-65
Charging System Light....................................3-40
Check Engine Light.........................................3-47
CHECK OIL LEVEL.........................................3-66
CHECK TIRE PRESSURE...............................3-72
CHECK WASHER FLUID.................................3-68
Checking Brake Fluid......................................5-44
Checking Coolant............................................5-28
Checking Engine Oil........................................5-16
Checking Things Under the Hood......................5-10
Chemical Paint Spotting.................................5-117
Child Restraints
Child Restraint Systems...............................1-36
Infants and Young Children...........................1-32
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-42
Older Children.............................................1-30
Securing a Child Restraint Designed for the
LATCH System........................................1-44
Securing a Child Restraint in a Rear Seat
Position..................................................1-44
Securing a Child Restraint in the Center Front
Seat Position...........................................1-46
Securing a Child Restraint in the Right Front
Seat Position...........................................1-47
3

D
Daytime Running Lamps..................................3-17
Defensive Driving............................................. 4-2
Defogging and Defrosting.........................3-28, 3-31
Delayed Locking.............................................2-10
Dinghy Towing................................................4-53
Doing Your Own Service Work........................... 5-4
Dolly Towing..................................................4-54
Dome Lamps.................................................3-20
Door
Delayed Locking..........................................2-10
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-13
Driver
Position, Safety Belt.....................................1-14
DRIVER DOOR AJAR.....................................3-69
Driver Information Center (DIC).........................3-53
DIC Operation and Displays..........................3-54
DIC Warnings and Messages........................3-65
Driving
At Night.....................................................4-33
City...........................................................4-38Driving (cont.)
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-39
Hill and Mountain Roads..............................4-43
In Rain and on Wet Roads...........................4-35
Winter........................................................4-44
Driving Across an Incline..................................4-29
Driving Downhill..............................................4-27
Driving in Mud, Sand, Snow or Ice....................4-31
Driving in Water..............................................4-32
Driving On Grades..........................................4-77
Driving on Off-Road Hills.................................4-24
Driving on Snow or Ice....................................4-45
Driving Through Deep Standing Water...............4-37
Driving Through Flowing Water.........................4-37
Driving Uphill..................................................4-25
Driving with a Trailer.......................................4-76
Dual Climate Control System............................3-29
DVD
Rear Seat Entertainment System...................3-99
DVD Distortion..............................................3-112
DVD Messages.............................................3-111
DVD Player..................................................3-104
5

J
Jump Starting.................................................5-48
K
KEYFOB X BATTERY LOW.............................3-70
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Lamps
Exterior......................................................3-14
Interior.......................................................3-20
Lamps On Reminder.......................................3-16
Lap Belt........................................................1-23
Lap-Shoulder Belt...................................1-14, 1-25
LATCH System
Child Restraints...........................................1-42
Securing a Child Restraint Designed for the
LATCH System........................................1-44
Leaving Your Vehicle With the Engine Running . . . 2-45
LEFT REAR DOOR AJAR................................3-70Level Control..................................................4-62
Light
Air Bag Readiness.......................................3-36
Anti-Lock Brake System Warning...................3-43
Brake System Warning.................................3-42
Charging System.........................................3-40
Cruise Control.............................................3-51
Low Fuel Warning.......................................3-52
Low Tire Pressure Warning Light...................3-43
Malfunction Indicator....................................3-47
Passenger Air Bag Status Indicator................3-38
Safety Belt Reminder...................................3-36
Security.....................................................3-51
Tow/Haul Mode...........................................3-51
Traction Off................................................3-44
Listening to a DVD.........................................3-99
Loading Your Vehicle.......................................4-55
Loading Your Vehicle for Off-Road Driving..........4-20
Locking Rear Axle...........................................4-11
Lockout Protection..........................................2-13
Locks
Delayed Locking..........................................2-10
Door........................................................... 2-8
Lockout Protection.......................................2-13
9

Locks (cont.)
Power Door.................................................. 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-13
Loss of Control...............................................4-19
LOW COOLANT LEVEL..................................3-66
Low Fuel Warning Light...................................3-52
Luggage Carrier..............................................2-66
Lumbar
Power Controls............................................. 1-3
M
Maintenance and Cleaning...............................2-79
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill.........................................6-10
At Least Once a Month................................6-10
At Least Once a Year..................................6-11
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-8
Maintenance Record....................................6-17Maintenance Schedule (cont.)
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-15
Owner Checks and Services.........................6-10
Recommended Fluids and Lubricants.............6-13
Scheduled Maintenance................................. 6-4
Using Your................................................... 6-3
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-79
Making Turns.................................................4-76
Malfunction Indicator Light................................3-47
Manual Passenger Seat.................................... 1-2
Matching Transmitter(s) to Your Vehicle............... 2-6
Memory Seat.................................................2-90
Message
DIC Warnings and Messages........................3-65
Mexico, Central America and Caribbean Islands/
Countries (Except Puerto Rico and U.S. Virgin
Islands) – Customer Assistance........................ 7-5
Midgate.........................................................2-14
Midgate Drain Grate Removal and Cleaning.......2-81
10

Radios (cont.)
Radio with CD............................................3-73
Radio with Six-Disc CD................................3-85
Rear Seat Audio........................................3-112
Setting the Time..........................................3-73
Theft-Deterrent..........................................3-114
Understanding Reception............................3-115
RDS Messages......................................3-79, 3-91
Reading Lamps..............................................3-21
Rear Axle......................................................5-55
Locking......................................................4-11
Rear Door Security Locks................................2-13
Rear Safety Belt Comfort Guides......................1-27
Rear Seat Audio (RSA)..................................3-112
Rear Seat Entertainment System.......................3-99
Rear Seat Operation......................................... 1-7
Rear Seat Passengers, Safety Belts..................1-24
Rear Storage Area..........................................2-67
Rear Window Defogger............................3-28, 3-31
Rearview Mirror, Automatic Dimming with
Compass and Temperature Display................2-52
Rearview Mirror, Automatic Dimming with
OnStar
®, Compass and Temperature Display . . . 2-49
Reclining Seatbacks.......................................... 1-5
Recommended Fluids and Lubricants.................6-13
Recreational Vehicle Towing.............................4-52REDUCED ENGINE POWER...........................3-66
Reinstalling the Cargo Cover Panels..................2-74
Remote Control.............................................3-106
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
Removing the Flat Tire and Installing the Spare
Tire ...........................................................5-96
Removing the Front/Rear Rails and Bows..........2-87
Removing the Spare Tire and Tools...................5-91
Removing the Tonneau Cover...........................2-84
Replacement Bulbs.........................................5-66
Replacing Brake System Parts..........................5-47
Reporting Safety Defects
Canadian Government..................................7-12
General Motors...........................................7-13
United States Government............................7-12
Reprogramming a Single HomeLink
®Button.......2-65
Resetting Defaults...........................................2-65
Restraint System Check
Checking Your Restraint Systems...................1-67
Replacing Restraint System Parts After a
Crash.....................................................1-68
Restraint Systems
Checking....................................................1-67
Replacing Parts...........................................1-68
13

Resynchronization............................................. 2-8
Retained Accessory Power (RAP)......................2-31
Right Front Passenger Position, Safety Belts......1-23
RIGHT REAR DOOR AJAR..............................3-70
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle To Get It Out...................4-50
Routing, Engine Drive Belt...............................6-16
Running Your Engine While You Are Parked.......2-48
S
Safety Belt
Reminder Light............................................3-36
Safety Belts
Care of....................................................5-114
Center Front Passenger Position....................1-23
Driver Position............................................1-14
How to Wear Safety Belts Properly................1-14
Questions and Answers About Safety Belts.....1-13
Rear Safety Belt Comfort Guides for Children
and Small Adults......................................1-27
Rear Seat Passengers.................................1-24
Right Front Passenger Position......................1-23
Safety Belt Extender....................................1-29Safety Belts (cont.)
Safety Belt Use During Pregnancy.................1-22
Safety Belts Are for Everyone......................... 1-9
Safety Chains.................................................4-75
Safety Warnings and Symbols.............................. iii
Scanning the Terrain.......................................4-23
Scheduled Maintenance..................................... 6-4
Seats
Head Restraints............................................ 1-7
Heated Seats............................................... 1-4
Manual Passenger......................................... 1-2
Memory.....................................................2-90
Power Lumbar.............................................. 1-3
Power Seats................................................. 1-2
Rear Seat Operation...................................... 1-7
Reclining Seatbacks...................................... 1-5
Secondary Latch System................................5-107
Securing a Child Restraint
Center Front Seat Position............................1-46
Designed for the LATCH System...................1-44
Rear Seat Position......................................1-44
Right Front Seat Position..............................1-47
Security Light.................................................3-51
Security While You Travel.................................. 7-6
Select Button.................................................3-65
Service........................................................... 5-3
14