2004 CHEVROLET TAHOE check engine

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 5-17for 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 5-61for 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 5-80.
6-10

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 2-38if
necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, contact
your GM Goodwrench dealer for service.
Automatic Transmission Shift Lock
Control System 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. It should be parked on a level
surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-38if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the key to the RUN
position, but do not start the engine. Without
applying the regular brake, try to move the shift
lever out of PARK (P) with normal effort. If the shift
lever moves out of PARK (P), contact your GM
Goodwrench dealer for service.
6-11

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
The key should turn to LOCK only when the
shift lever is in PARK (P).
The key should come out only in LOCK.
Contact your GM Goodwrench dealer if service is
required.
Parking Brake and Automatic
Transmission Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
To check the parking brake’s holding ability: With
the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK (P). Then
release the parking brake followed by the regular
brake.
Contact your GM Goodwrench dealer if service is
required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-12

Bulb Replacement (cont.)
Replacement Bulbs......................................5-60
Roof Marker Lamps.....................................5-57
Side Identication Marker Lamps...................5-57
Taillamps....................................................5-59
Buying New Tires...........................................5-74
C
California Fuel.................................................. 5-6
Canada – Customer Assistance.......................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Specications..........................5-118
Car Washes for QUADRASTEER™
Equipped Vehicles.......................................4-19
Carbon Monoxide...................2-14, 2-43, 4-48, 4-65
Care of
Safety Belts..............................................5-103
Your Cassette Tape Player..........................3-137
Your CD and DVD Player...........................3-138
Your CDs and DVDs..................................3-138
Cargo Cover..................................................2-65
Cargo Tie Downs............................................2-65
Cassette Tape Messages...............................3-104
CD Adapter Kits............................................3-104
CD Messages.............................3-92, 3-107, 3-122Center Console Storage Area...........................2-63
Center Instrument Panel Fuse Block................5-112
Center Passenger Position, Safety Belts.............1-40
Chains, Tires..................................................5-79
CHANGE ENGINE OIL....................................3-69
Check
Engine Light...............................................3-50
Check Engine Light.........................................3-50
CHECK OIL LEVEL.........................................3-70
CHECK TIRE PRESSURE...............................3-70
CHECK WASHER FLUID.................................3-70
Checking Brake Fluid......................................5-41
Checking Coolant............................................5-28
Checking Engine Oil........................................5-17
Checking Things Under the Hood......................5-12
Chemical Paint Spotting.................................5-107
Child Restraints
Child Restraint Systems...............................1-54
Infants and Young Children...........................1-50
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-62
Older Children.............................................1-48
Securing a Child Restraint Designed
for the LATCH System..............................1-64
Securing a Child Restraint in a Center
Rear Seat Position...................................1-67
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-64
3

Driving with a Trailer.......................................4-74
Dual Automatic Climate Control System.............3-27
Dual Climate Control System............................3-23
DVD
Rear Seat Entertainment System..................3-123
DVD Distortion..............................................3-133
DVD Messages.............................................3-133
DVD Player..................................................3-126
E
Easy Exit Seat...............................................2-68
Electrical System
Add-On Equipment.....................................5-110
Fuses and Circuit Breakers.........................5-110
Power Windows and Other Power Options....5-110
Windshield Wiper Fuses.............................5-110
Emissions Inspection and Maintenance
Programs...................................................3-52
Engine
Air Cleaner/Filter.........................................5-22
Battery.......................................................5-44
Check and Service Engine Soon Light............3-50
Coolant......................................................5-26
Coolant Heater............................................2-24
Coolant Temperature Gage...........................3-47
Drive Belt Routing.......................................6-17
Engine Compartment Overview......................5-14Engine (cont.)
Exhaust.....................................................2-43
Fan Noise..................................................5-37
Oil .............................................................5-17
Overheating................................................5-29
Starting......................................................2-23
ENGINE COOLANT HOT.................................3-70
Engine Hour Meter Display...............................3-41
Engine Oil Additives........................................5-20
ENGINE OVERHEATED..................................3-70
Entering or Exiting the Third Row Seats.............1-10
Entry Lighting.................................................3-19
Environmental Concerns..................................4-27
Erasing HomeLink
®Buttons..............................2-61
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-19
Express-Down Windows...................................2-17
Extender, Safety Belt.......................................1-47
Exterior Lamps...............................................3-14
F
Filter
Engine Air Cleaner......................................5-22
Finding a Program Type (PTY) Station
(RDS and XM™).......................3-85, 3-97, 3-112
Finding a Station..................3-78, 3-83, 3-95, 3-110
Finish Care..................................................5-104
6

H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-9
Headlamp High/Low-Beam Changer.................... 3-8
Headlamps....................................................5-54
Bulb Replacement.......................................5-54
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-56
Halogen Bulbs............................................5-54
Roof Marker Lamps.....................................5-57
Side Identication Marker Lamps...................5-57
Headphones.................................................3-123
Heated Seats................................................... 1-6
Heating.........................................................3-31
Highway Hypnosis...........................................4-46
Hill and Mountain Roads..................................4-46
Hitches..........................................................4-72
HomeLink
®Transmitter....................................2-58
HomeLink®Transmitter, Programming................2-59
Hood
Checking Things Under................................5-12
Release.....................................................5-12
Horn............................................................... 3-6
How to Add Coolant to the Coolant
Surge Tank.................................................5-34
How to Add Fluid............................................5-26
How to Check Lubricant...................................5-51How to Check Power Steering Fluid..................5-39
How to Inspect...............................................5-22
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-31
Hydroplaning..................................................4-42
I
If No Steam Is Coming From Your Engine..........5-31
If Steam Is Coming From Your Engine...............5-30
If the Light is Flashing.....................................3-51
If the Light Is On Steady.................................3-51
If You Are Caught in a Blizzard.........................4-50
If You Are Stuck in Sand, Mud, Ice or Snow.......4-52
If You Do Decide To Pull A Trailer.....................4-66
Ignition Positions.............................................2-22
Infants and Young Children, Restraints...............1-50
Ination - Tire Pressure...................................5-69
Instrument Panel
Cluster.......................................................3-40
Overview..................................................... 3-4
Instrument Panel Brightness.............................3-18
Instrument Panel Fuse Block..........................5-111
Interior Lamps................................................3-18
J
Jump Starting.................................................5-44
8

Oil
Engine.......................................................5-17
Pressure Gage............................................3-53
OIL LIFE RESET............................................3-71
Oil Life System...............................................3-60
OIL PRESSURE LOW.....................................3-71
Older Children, Restraints................................1-48
Online Owner Center........................................ 7-3
OnStar
®Personal Calling.................................2-57
OnStar®Services............................................2-56
OnStar®Steering Wheel Controls......................2-57
OnStar®System.............................................2-56
OnStar®Virtual Advisor....................................2-57
Other Warning Devices...................................... 3-6
Outlet Adjustment...................................3-26, 3-33
Outside
Automatic Dimming Mirror.............................2-54
Camper-Type Mirrors....................................2-52
Convex Mirror.............................................2-55
Curb View Assist Mirrors..............................2-54
Heated Mirrors............................................2-55
Manual Mirrors............................................2-51
Power Foldaway Mirrors...............................2-53
Power Mirrors.............................................2-52
Outside Power Camper-Type Mirror...................2-53
Overheated Engine Protection Operating
Mode (V8 Engines Only)..............................5-29
Overseas – Customer Assistance........................ 7-5Owner Checks and Services.............................6-10
Owners, Canadian............................................... ii
Owner’s Information........................................7-12
P
Panel Doors...................................................2-15
Parental Control............................................3-123
Park (P)
Shifting Into................................................2-39
Shifting Out of............................................2-41
Parking
Brake........................................................2-38
Over Things That Burn.................................2-42
Parking on Hills..............................................4-76
Passenger Air Bag Indicator.....................2-48, 2-51
Passenger Air Bag Status Indicator...................3-42
PASSENGER DOOR AJAR..............................3-72
Passenger Sensing System..............................1-84
Passing.................................................4-20, 4-75
Passlock
®......................................................2-20
Personalization Button.....................................3-61
Plan Ahead When Possible................................ 7-7
Playing a Cassette Tape................................3-102
Playing a CD..............................3-90, 3-105, 3-117
Playing a Specic Loaded CD.........................3-118
Playing the Radio.................3-78, 3-82, 3-94, 3-109
11

Rearview Mirrors.............................................2-45
Reclining Seatbacks.......................................... 1-7
Reclining the Seatbacks...................................1-23
Recommended Fluids and Lubricants.................6-13
Recreational Vehicle Towing.............................4-55
REDUCED ENGINE POWER...........................3-72
Remote Control.............................................3-128
Remote Keyless Entry System............................ 2-5
Remote Keyless Entry System, Operation............ 2-6
Removing the 50/50 Split Bench Seat................1-16
Removing the Bench Seat................................1-21
Removing the Flat Tire and Installing the
Spare Tire..................................................5-86
Removing the Spare Tire and Tools...................5-82
REPLACE LIFTGATE FUSE.............................3-72
Replacement Bulbs.........................................5-60
Replacing Brake System Parts..........................5-43
Replacing the 50/50 Split Bench Seat................1-17
Replacing the Bench Seat................................1-22
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-10
Reprogramming a Single HomeLink
®Button.......2-62
Resetting Defaults...........................................2-62
Restraint System Check
Checking Your Restraint Systems...................1-89
Replacing Restraint System Parts After a
Crash.....................................................1-90Restraint Systems
Checking....................................................1-89
Replacing Parts...........................................1-90
Resynchronization............................................. 2-8
Retained Accessory Power (RAP)......................2-22
Right Front Passenger Position, Safety Belts......1-40
RIGHT REAR DOOR AJAR..............................3-72
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle To Get It Out...................4-53
Routing, Engine Drive Belt...............................6-17
Running Your Engine While You Are Parked.......2-44
S
Safety Belt
Reminder Light............................................3-41
Safety Belts
Care of....................................................5-103
Center Passenger Position............................1-40
Driver Position............................................1-31
How to Wear Safety Belts Properly................1-31
Questions and Answers About Safety Belts.....1-30
Rear Safety Belt Comfort Guides for Children
and Small Adults......................................1-45
Rear Seat Passengers.................................1-42
Right Front Passenger Position......................1-40
Safety Belt Extender....................................1-47
13