towing CHEVROLET AVALANCHE 2004 1.G Owner's Guide

5. 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.
5-40

(f)Lubricate all key lock cylinders, hood latch assembly,
secondary latch, pivots, spring anchor, release pawl,
midgate hinges, side storage box door hinges, tailgate
hinges, tailgate linkage, outer tailgate handle pivot points,
latch bolt, fuel 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

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

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

T
Tachometer....................................................3-35
Tailgate.........................................................2-23
Tailgate Removal............................................2-24
Taillamps.......................................................5-65
Temperature and Compass Display....................2-50
Temperature Display........................................2-53
Testing the Alarm............................................2-28
Theft-Deterrent, Radio....................................3-114
Theft-Deterrent Systems...................................2-27
Content Theft-Deterrent................................2-27
Passlock
®...................................................2-29
Throttle, Adjustable..........................................2-33
TIGHTEN FUEL CAP......................................3-67
Tilt Wheel........................................................ 3-7
Tire Sidewall Labeling......................................5-68
Tire Size.......................................................5-72
Tire Terminology and Denitions........................5-74
Tires...................................................5-68, 5-116
Buying New Tires........................................5-83
Chains.......................................................5-88
Changing a Flat Tire....................................5-90
If a Tire Goes Flat.......................................5-89
Ination - Tire Pressure................................5-76
Inspection and Rotation................................5-81
Pressure Monitor System..............................5-77
Spare Tire................................................5-110
Uniform Tire Quality Grading.........................5-85
Wheel Alignment and Tire Balance.................5-86Tires (cont.)
Wheel Replacement.....................................5-86
When It Is Time for New Tires......................5-82
To Use the Engine Coolant Heater....................2-34
Tonneau Cover...............................................2-83
Top Drain Grates – Removal and Cleaning.........2-79
Top Strap......................................................1-40
Top Strap Anchor Location...............................1-41
Top-Box Storage.............................................2-82
Torque Lock...................................................2-45
Total Weight on Your Vehicle’s Tires..................4-74
Tow/Haul Mode...............................................2-37
Tow/Haul Mode Light.......................................3-51
Towing
Recreational Vehicle.....................................4-52
Towing a Trailer..........................................4-68
Your Vehicle...............................................4-52
Traction
Assist System (TAS)...................................... 4-9
Off Light.....................................................3-44
Stabilitrak
®System......................................4-11
TRACTION ACTIVE........................................3-70
Traction Control Operation................................4-13
TRACTION SYS LIMITED................................3-70
Trailer
Recommendations.......................................4-67
Trailer Brakes.................................................4-75
Trailer Wiring Harness.....................................4-79
TRANS HOT IDLE ENGINE.............................3-68
Transfer Case................................................5-56
16

Transmission
Fluid, Automatic...........................................5-23
Temperature Gage.......................................3-45
TRANSMISSION HOT.....................................3-68
Transmission Operation, Automatic....................2-34
Transmission, Transaxle, Transfer Case Unit
Repair Manual............................................7-13
Transportation Options...................................... 7-9
Traveling to Remote Areas...............................4-22
Trip Information Button....................................3-54
Truck-Camper Loading Information....................4-67
Turn and Lane Change Signals.......................... 3-8
TURN SIGNAL ON.........................................3-67
Turn Signal/Multifunction Lever........................... 3-8
Turn Signals When Towing a Trailer..................4-77
U
Underhood Fuse Block...................................5-123
Understanding Radio Reception.......................3-115
Uniform Tire Quality Grading............................5-85
United States – Customer Assistance.................. 7-5
Used Replacement Wheels..............................5-87
Using Cleaner on Fabric................................5-112
Using HomeLink
®...........................................2-64
Using Song List Mode.....................................3-97
Using the Recovery Hooks...............................4-50
V
Vehicle
Control........................................................ 4-6
Damage Warnings........................................... iv
Loading......................................................4-55
Symbols......................................................... iv
Vehicle Data Collection and Event Data
Recorders..................................................7-10
Vehicle Identication
Number (VIN)............................................5-119
Service Parts Identication Label..................5-119
Vehicle Personalization
Memory Seat..............................................2-90
Vehicle Storage..............................................5-47
Vehicles with Body-Side Cladding..............5-58, 5-62
Vehicles with Gray Body-Side Cladding..............5-65
Vehicles without Body-Side Cladding.........5-60, 5-63
Ventilation Adjustment......................................3-32
Video Screen................................................3-103
Visors...........................................................2-26
Voltmeter Gage..............................................3-41
17