2004 CHEVROLET TAHOE towing

6. Then replace the
pressure cap.
Be sure the pressure
cap is hand-tight
and fully seated.Engine Fan Noise
Your vehicle has a clutched engine cooling fan. When
the clutch is engaged, the fan spins faster to provide
more air to cool the engine. In most everyday driving
conditions, the fan is spinning slower and the clutch is
not fully engaged. This improves fuel economy and
reduces fan noise. Under heavy vehicle loading, trailer
towing and/or high outside temperatures, the fan
speed increases as the clutch more fully engages.
So you may hear an increase in fan noise. This
is normal and should not be mistaken as the
transmission slipping or making extra shifts. It is
merely the cooling system functioning properly.
The fan will slow down when additional cooling is
not required and the clutch disengages.
You may also hear this fan noise when you start the
engine. It will go away as the fan clutch partially
disengages.
5-37

(f)Lubricate all key lock cylinders, hood latch assembly,
secondary latch, pivots, spring anchor, release pawl,
rear compartment hinges, outer liftgate handle pivot
points, rear door detent link, roller mechanism, liftgate
handle pivot points, latch bolt, fuel door hinge, cargo
door hinge, locks and folding seat hardware. More
frequent lubrication may be required when exposed to a
corrosive environment. Applying silicone grease on
weatherstrips with a clean cloth will make them
last longer, seal better and not stick or squeak.
(g)Add uid as needed. A uid loss could indicate a
problem; repair as needed. Check vent hose at transfer
case for kinks and proper installation.
(h)Change automatic transmission uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or delivery
service.(i)Drain, ush and rell cooling system. See Engine
Coolant on page 5-26for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and ller neck.
Pressure test the cooling system and pressure cap.
(j)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired and
the uid level checked. Add uid if needed.
(k)Inspect system. Check all fuel and vapor lines and
hoses for proper hook-up, routing and condition.
Check that the purge valve works properly (if equipped).
Replace as needed.
6-9

Customer Assistance Information (cont.)
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..................................3-16
Defensive Driving............................................. 4-2
Defogging and Defrosting.........................3-25, 3-32
Delayed Locking.............................................2-10
Dinghy Towing................................................4-56
Doing Your Own Service Work........................... 5-3
Dolly Towing..................................................4-57
Dome Lamps.................................................3-20
Door
Delayed Locking..........................................2-10
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-13Driver
Position, Safety Belt.....................................1-31
DRIVER DOOR AJAR.....................................3-70
Driver Information Center (DIC).........................3-56
DIC Operation and Displays..........................3-56
DIC Warnings and Messages........................3-68
Driving
At Night.....................................................4-39
City...........................................................4-43
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Freeway.....................................................4-44
Hill and Mountain Roads..............................4-46
In Rain and on Wet Roads...........................4-40
Off-Road....................................................4-23
Winter........................................................4-48
Driving Across an Incline..................................4-35
Driving Downhill..............................................4-34
Driving in Mud, Sand, Snow or Ice....................4-37
Driving in Water..............................................4-38
Driving On Grades..........................................4-76
Driving on Off-Road Hills.................................4-30
Driving on Snow or Ice....................................4-48
Driving Through Deep Standing Water...............4-42
Driving Through Flowing Water.........................4-42
Driving Uphill..................................................4-31
5

M
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....................................6-18
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................................................... 6-2
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-77
Making Turns.................................................4-75
Malfunction Indicator Light................................3-50
Manual Seats................................................... 1-3
Manual Windows............................................2-16
Matching Transmitter(s) to Your Vehicle............... 2-6
Memory Seat.................................................2-67
Message
DIC Warnings and Messages........................3-68
Mexico, Central America and Caribbean Islands/
Countries (Except Puerto Rico and U.S. Virgin
Islands) – Customer Assistance........................ 7-5Mirrors
Automatic Dimming Rearview with Compass
and Temperature Display...........................2-49
Automatic Dimming Rearview with OnStar®,
Compass and Temperature Display.............2-45
Manual Rearview Mirror................................2-45
Outside Automatic Dimming Mirror.................2-54
Outside Camper-Type Mirrors........................2-52
Outside Convex Mirror.................................2-55
Outside Curb View Assist Mirrors...................2-54
Outside Heated Mirrors................................2-55
Outside Manual Mirrors................................2-51
Outside Power Camper-Type.........................2-53
Outside Power Foldaway Mirrors....................2-53
Outside Power Mirrors..................................2-52
Model Reference................................................ vi
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-21
Normal Maintenance Replacement Parts............6-15
O
Odometer......................................................3-41
Off-Road Driving.............................................4-23
Off-Road Recovery..........................................4-20
10

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

Tires (cont.)
Changing a Flat Tire....................................5-80
If a Tire Goes Flat.......................................5-80
Ination - Tire Pressure................................5-69
Inspection and Rotation................................5-72
Pressure Monitor System..............................5-70
Spare Tire................................................5-100
Uniform Tire Quality Grading.........................5-76
Wheel Alignment and Tire Balance.................5-77
Wheel Replacement.....................................5-77
When It Is Time for New Tires......................5-74
To Use the Engine Coolant Heater....................2-25
Top Strap......................................................1-58
Top Strap Anchor Location...............................1-59
Torque Lock...................................................2-41
Total Weight on Your Vehicle’s Tires..................4-72
Tow/Haul Mode...............................................2-29
Tow/Haul Mode Light.......................................3-54
Towing
Recreational Vehicle.....................................4-55
Towing a Trailer..........................................4-65
Your Vehicle...............................................4-55
Traction
Assist System (TAS)...................................... 4-9
Off Light.....................................................3-46
Stabilitrak
®System......................................4-12
TRACTION ACTIVE........................................3-75
Traction Control Operation................................4-13
TRACTION SYS LIMITED................................3-75Trailer
Recommendations.......................................4-65
Trailer Brakes.................................................4-73
Trailer Wiring Harness.....................................4-78
Transfer Case........................................5-50, 5-52
Transmission
Fluid, Automatic...........................................5-24
Temperature Gage.......................................3-48
TRANSMISSION HOT.....................................3-75
Transmission Operation, Automatic....................2-26
Transmission, Transaxle, Transfer Case Unit
Repair Manual............................................7-11
Transportation Options...................................... 7-8
Traveling to Remote Areas...............................4-27
Trip Information Button....................................3-57
Trip Odometer................................................3-41
Turn and Lane Change Signals.......................... 3-8
TURN SIGNAL ON.........................................3-76
Turn Signal/Multifunction Lever........................... 3-7
Turn Signals When Towing a Trailer..................4-75
U
Underhood Fuse Block...................................5-113
Understanding Radio Reception.......................3-137
Uniform Tire Quality Grading............................5-76
United States – Customer Assistance.................. 7-4
Used Replacement Wheels..............................5-78
Using Cleaner on Fabric................................5-101
16