2003 CHEVROLET AVALANCHE fuses

Fuses Usage
IGN 0 PCM, TCM
TBC IGN 0 Truck Body Controller
VEH CHMSLVehicle and Trailer High
Mounted Stoplamp
LT TRLR ST/TRN Left Turn Signal/Stop Trailer
LT TRNLeft Turn Signals and
Sidemarkers
VEH STOPVehicle Stoplamps, Brake
Module, Electronic Throttle
Control Module
RT TRLR ST/TRN Right Turn Signal/Stop Trailer
RT TRNRight Turn Signals and
Sidemarkers
BODY Harness Connector
DDM Driver Door ModuleFuses Usage
AUX PWR 2Rear Cargo Area Power
Outlets
LOCKS Power Door Lock System
ECCRear Electronic Climate
Control
TBC 2C Truck Body Controller
FLASH Flasher Module
CB LT DOORSLeft Power Window Circuit
Breaker
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller
5-99

Underhood Fuse BlockThe underhood fuse block in the engine compartment
on the driver's side of the vehicle near the battery.
Lift the cover for access to the fuse/relay block.
To remove fuses, hold the end of the fuse between your
thumb and index ®nger and pull straight out.
See
Engine Compartment Overview on page 5-12for
more information on its location.
Your vehicle may not have all of the features or fuses
listed in this section.
5-101

*1Ð Gasoline Engine and Fuel Injection Rail #2.
*2Ð Gasoline Engine and Fuel Injection Rail #1.
*3Ð Gasoline Engine; Oxygen Sensors.
*4Ð Gasoline Engine; Oxygen Sensors.
*5Ð PCM Ignition
Fuses Usage
GLOW PLUG Not Used
CUST FEED Gasoline Accessory Power
STUD #1Auxiliary Power (Single
Battery and Diesels
Only)/Dual Battery (TP2) Do
not install fuse.
MBECMid Bussed Electrical Center
Power Feed, Front Seats,
Right Doors
BLOWER Front Climate Control Fan
LBECLeft Bussed Electrical Center,
Door Modules, Door Locks,
Auxiliary Power Outlet
STUD 2Accessory Power/Trailer
Wiring Brake Feed
ABS Anti-Lock Brakes
VSES/ECAS Vehicle Stability
Fuses Usage
IGN A Ignition Power
IGN B Ignition Power
LBEC 1Left Bussed Electrical Center,
Left Doors, Truck Body
Controller, Flasher Module
TRL PARK Parking Lamps Trailer Wiring
RR PARKRight Rear Parking and
Sidemarker Lamps
LR PARKLeft Rear Parking and
Sidemarker Lamps
PARK LP Parking Lamps Relay
STARTER Starter Relay
INTPARK Interior Lamps
STOP LP Stoplamps
TBC BATTTruck Body Controller Battery
Feed
SUNROOF Sunroof
SEO B2 Off-Road Lamps
4WSVent Solenoid
Canister/Quadrasteer Module
Power
RR HVAC Rear Climate Control
5-103

Fuses Usage
AUX PWRAuxiliary Power Outlet Ð
Console
IGN 1 Ignition Relay
PCM 1 Powertrain Control Module
ETC/ECMElectronic Throttle Control,
Electronic Brake Controller
IGN EInstrument Panel Cluster, Air
Conditioning Relay, Turn
Signal/Hazard Switch, Starter
Relay
RTD Ride Control
TRL B/U Backup Lamps Trailer Wiring
PCM BPowertrain Control Module,
Fuel Pump
F/PMP Fuel Pump (Relay)
B/U LPBack-up Lamps, Automatic
Transmission Shift Lock
Control System
RR DEFOG Rear Window Defogger
HDLP-HI Headlamp High Beam Relay
PRIME Not UsedFuses Usage
SIRSupplemental In¯atable
Restraint System
FRT PARKFront Parking Lamps,
Sidemarker Lamps
DRLDaytime Running Lamps
(Relay)
SEO IGN Rear Defog Relay
TBC IGN1 Truck Body Controller Ignition
HI HDLP-LT High Beam Headlamp-Left
LH HID Not Used
DRL Daytime Running Lamps
IPC/DICInstrument Panel
Cluster/Driver Information
Center
HVAC/ECAS Climate Control Controller
CIG LTR Cigarette Lighter
HI HDLP-RT High Beam Headlamp-Right
HDLP-LOW Headlamp Low Beam Relay
A/C COMP Air Conditioning Compressor
A/C COMPAir Conditioning Compressor
Relay
5-104

Fuses Usage
RR WPR Rear Wiper/Washer
RADIO Audio System
SEO B1Mid Bussed Electrical Center,
HomeLink, Rear Heated
Seats
LO HDLP-LT Headlamp Low Beam-Left
BTSIBrake Transmission Shift
Interlock System
CRANK Starting System
LO HDLP-RT Headlamp Low Beam-Right
FOG LP Fog Lamp Relay
FOG LP Fog Lamps
HORN Horn RelayFuses Usage
W/S WASHWindshield and Rear Window
Washer Pump Relay
W/S WASHWindshield and Rear Window
Washer Pump
INFOOnStar/Rear Seat
Entertainment
RADIO AMP Radio Ampli®er
RH HID Not Used
HORN Horn
EAP Electric Adjustable Pedals
TREC All-Wheel Drive Module
SBA Supplemental Brake Assist
5-105

Driving Downhill..............................................4-26
Driving in Mud, Sand, Snow or Ice....................4-29
Driving in Water..............................................4-30
Driving On Grades..........................................4-66
Driving on Off-Road Hills.................................4-23
Driving on Snow or Ice....................................4-42
Driving Through Deep Standing Water...............4-35
Driving Through Flowing Water.........................4-35
Driving Uphill..................................................4-24
Driving with a Trailer.......................................4-64
Driving..........................................................4-32
At Night.....................................................4-32
City...........................................................4-36
Defensive..................................................... 4-2
Drunken....................................................... 4-3
Freeway.....................................................4-37
Hill and Mountain Roads..............................4-39
In Rain and on Wet Roads...........................4-33
Winter........................................................4-41
Dual Climate Control System............................3-26
DVD Player....................................................3-90
DVD ............................................................3-103
Cleaning the Video Screen..........................3-103
Distortion..................................................3-102
Rear Seat Entertainment System...................3-90E
Easy Exit Seat...............................................2-86
Electrical System............................................5-96
Fuses and Circuit Breakers...........................5-97
Power Windows and Other Power Options......5-97
Windshield Wiper Fuses...............................5-97
Electrochromic Mirror Operation................2-46, 2-49
Emissions Inspection and Maintenance
Programs...................................................3-43
ENGINE COOLANT HOT.................................3-58
Engine Coolant Level Check.............................6-10
Engine Oil Additives........................................5-18
Engine Oil and Chassis Lubrication Scheduled
Maintenance................................................. 6-5
Engine Oil Level Check...................................6-10
ENGINE OVERHEATED..................................3-58
Engine..........................................................5-20
Air Cleaner/Filter.........................................5-20
Battery.......................................................5-42
Check and Service Engine Soon Light............3-41
Compartment Overview................................5-12
Coolant Heater............................................2-30
Coolant Temperature Gage...........................3-39
Coolant......................................................5-24
Cooling System Inspection............................6-16
Exhaust.....................................................2-44
Fan Noise..................................................5-36
Oil .............................................................5-15
Overheating................................................5-27
5

Engine (cont.)
Starting......................................................2-28
Entertainment System....................................3-103
Cleaning the Video Screen..........................3-103
DVD Distortion..........................................3-102
Entry Lighting.................................................3-17
Environmental Concerns..................................4-21
Erasing HomeLink
žButtons..............................2-58
Exit Lighting...................................................3-18
Extender, Safety Belt.......................................1-31
Exterior Lamps...............................................3-13
F
Filter.............................................................5-20
Engine Air Cleaner......................................5-20
Finding a PTY Station (RDS and XMŸ).....3-69, 3-80
Finding a Station....................................3-67, 3-78
Finish Care....................................................5-92
Finish Damage...............................................5-93
Fixed Mast Antenna.......................................3-103
Flash-to-Pass................................................... 3-8
Flat Tire, Changing.........................................5-70
Flat Tire........................................................5-69
Fluid.............................................................5-22
Automatic Transmission................................5-22
Power Steering...........................................5-36
Windshield Washer......................................5-38Fluid (cont.)
FM Stereo....................................................3-102
Fog Lamps....................................................3-15
Following Distance..........................................4-65
Footnotes........................................................ 6-5
Four-Wheel Drive....................................2-34, 5-50
Front Armrest Storage Area..............................2-59
Front Axle Locking Feature...............................2-34
Front Axle......................................................5-51
Frontal Air Bags.............................................1-57
Fuel Information Button....................................3-49
FUEL LEVEL LOW.........................................3-60
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-45
Gasoline Octane........................................... 5-5
Gasoline Speci®cations.................................. 5-5
Low Warning Light.......................................3-45
System Inspection.......................................6-15
Fuses...........................................................5-97
Fuses and Circuit Breakers...........................5-97
Windshield Wiper.........................................5-97
6

When to Check..............................................5-62
When to Inspect.............................................5-20
When You Are Ready to Leave After Parking
on a Hill.....................................................4-67
Where to Put the Restraint...............................1-41
Why Safety Belts Work....................................1-11
Windows.......................................................2-23
Power........................................................2-24
Windshield and Wiper Blades...........................5-92
Windshield Washer Fluid Level Check................6-11
Windshield Washer........................................... 3-9
Fluid..........................................................5-38
Windshield Wiper............................................5-60
Blade Replacement......................................5-60
Fuses........................................................5-97
Windshield Wipers............................................ 3-9
Winter Driving................................................4-41
Wiper Blade Check.........................................6-11X
XMŸ Radio Satellite Service (USA Only) . . . 3-65, 3-76
XMŸ Satellite Radio Antenna System..............3-103
XMŸ Satellite Radio Service (USA Only)..........3-102
Y
Your Vehicle and the Environment....................... 6-2
17