Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Fuse Layout Chevrolet Avalanche 2001-2006

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Fuse Box Location

Instrument Panel

The fuse box is located on the side of the instrument panel, on the driver’s side, behind the cover.Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Center instrument panel relay box

The center instrument panel utility block is located underneath the instrument panel, to the left of the steering column.

Engine Compartment

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Engine Compartment Additional Fuse Block (if equipped)

The auxiliary electric cooling fan fuse block is located in the engine compartment on the driver’s side of the vehicle next to the underhood fusebox.

Fuse box diagrams

2001, 2002

Instrument Panel

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Assignment of the fuses in the instrument panel (2001-2002)

Name Usage
L BODY Retained Accessory Power Relay
LOCK Power Door Locks
DRV UNLOCK Power Door Lock Relay
LOCK Power Door Lock Relay
HVAC 1 Climate Control System
CRUISE Cruise Control, Instrument Cluster
IGN 3 Ignition, Power Seats
4WD Four-Wheel Drive System, Auxiliary Battery
CRANK Starting System
INT PRK Interior Lamps
L DOOR Power Door Lock Relay
BRAKE Anti-Lock Brake System
RR WIPER Not Used
ILLUM Interior Lamps, Cargo Lamps
SEAT Power Seat Circuit Breaker
TURN Exterior Lamps, Turn Signals, Hazard Lamps
UNLOCK Power Door Locks
HTR A/C Climate Control System
WS WPR Windshield Wipers
IGN 1 Ignition, Instrument Panel
AIR BAG Air Bag
MIR/LOCK Power Mirrors, Power Door Locks
DR LOCK Power Door Locks
PWR WDO Power Window Circuit Breaker
UNLOCK Power Door Lock Relay
IGN 0 PRND321 Display, Odometer, VCM/PCM
SEO IGN Special Equipment Option, Ignition
SEO ACCY Special Equipment Option Accessory
RAP #1 Retained Accessory Power Relay
RDO 1 Audio System
RAP #2 Rear Power Windows, Sunroof, Radio
Center instrument panel relay box

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Center instrument panel relay box (2001-2002)

Relay Usage
SEO Special Equipment Option
HTD ST Heated Seats
SPARE Not Used
VANITY Headliner Wiring
TRAILER Trailer Brake Wiring
PWR ST Power Seats
SPARE Not used
UPF Upfitter
PARK LAMP Parking Lamps
FRT PRK EXPT Not Used
SPARE 2 Not Used
PUDDLE LP Puddle Lamps
SL RIDE Not Used
SPARE 3 Not Used
INADV PWR Interior Lamps Feed
CTSY LP Courtesy Lamps
CEL PHONE Cellular Telephone Wiring
Engine Compartment

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Assignment of the fuses and relay in the engine compartment (2001-2002)

Name Usage
STUD #1 Accessory Power/Trailer Wiring Feed/Load Leveling
ABS Anti-Lock Brakes
IGN A Ignition Switch
AIR A.I.R. System
RAP #1 Retained Accessory Power, Power Mirrors, Power Door Locks, Power Seat(s)
IGN B Ignition Switch
RAP #2 Retained Accessory Power/Rear Power Windows, Sunroof, Radio
STUD #2 Accessory Power/Trailer Wiring Brake Feed
TRL R TRN Right Turn Signal Trailer Wiring
TRL L TRN Left Turn Signal Trailer Wiring
IGN 1 Ignition, Fuel Controls
INJ-B Ignition, Fuel Controls (Relay)
STARTER Starter (Relay)
PARK LP Parking Lamps
FRT HVAC Climate Control System
STOP LP Exterior Lamps, Stoplamps
ECM 1 VCM/PCM
CHMSL Center High Mounted Stoplamp
VEH STOP Stoplamps, Cruise Control
TRL B/U Backup Lamps Trailer Wiring
INJ-A Fuel Controls, Ignition
RR HVAC Not Used
VEH B/U Vehicle Backup Lamps
ENG 1 Engine Controls, Canister Purge, Fuel System
ETC Electronic Throttle Control
IGN E A/C Compressor Relay, Rear Window Defogger, Daytime Running Lamps, A.I.R. System
B/U LP Backup Lamps, Automatic Transmission Shift Lock Control System
ATC Automatic Transfer Case
RR DEFOG Rear Window Defogger, Heated Mirrors (Relay)
RTD Not Used
RR PRK Right Rear Parking Lamps
ECM B VCM/PCM
F/PMP Fuel Pump (Relay)
O2 A Oxygen Sensors
O2 B Oxygen Sensors
LR PRK Left Rear Parking Lamps
RR DEFOG Rear Window Defogger, Heated Mirrors
HDLP Headlamps (Relay)
TRL PRK Parking Lamps Trailer Wiring
PRIME Not Used
RT HDLP Right Headlamps
DRL Daytime Running Lamps (Relay)
HTD MIR Heated Mirrors
LT HDLP Left Headlamps
A/C Air Conditioning
AUX PWR Cigarette Lighter, Auxiliary Power Outlets
SEO 2 Special Equipment Option Power, Power Seats, Aux Roof Mnt Lamp
SEO 1 Special Equipment Option Power, Aux Roof Mnt Lamp
DRL Daytime Running Lamps
A/C A/C (Relay)
FOG LP Fog Lamps
FOG LP Fog Lamps (Relay)
RADIO Audio System, Instrument Cluster, Climate Control System
CIGAR Cigarette Lighter, Auxiliary Power Outlets
RT TURN Right Turn Signals
BTSI Automatic Transmission Shift Lock Control System
LT TURN Left Turn Signals
FR PRK Front Parking Lamps, Sidemarker Lamps
W/W PMP Windshield Washer Pump
HORN Horn (Relay)
IGN C Ignition Switch, Fuel Pump, PRND321 Display, Crank
RDO AMP Radio Amplifier
HAZ LP Exterior Lamps, Hazard Lamps
EXP LPS Not Used
HORN Horn
CTSY LP Interior Lamps
RR WPR Not Used
TBC Body Control Module, Remote Keyless Entry, Headlamps

2003, 2004, 2005, 2006

Instrument Panel

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Assignment of the fuses in the instrument panel (2003-2006)

Name Usage
RR Wiper 2003-2005:Rear Window Wiper Switch

2006: Not Used

SEO ACCY Special Equipment Option Accessory
WS WPR Windshield Wipers
TBC ACCY Truck Body Controller Accessory
IGN 3 Ignition, Heated Seats
4WD Four-Wheel Drive System
HTR A/C Climate Control System
LCK Power Door Lock Relay (Lock Function)
HVAC 1 Inside Rearview Mirror, Climate Control System
LT DR Driver’s Door Harness Connection
CRUISE Cruise Control
UNLOCK Power Door Lock Relay (Unlock Function)
RR FOG LP Rear Fog Lamp (Export Only)
BRAKE Anti-Lock Brake System
DRIVER UNLOCK Power Door Lock Relay (Driver’s Door Unlock Function)
IGN 0 Powertrain Control Module, Transmission Control Module
TBC IGN 0 Truck Body Controller
VEH CHMSL Vehicle and Trailer High Mounted Stoplamp
LT TRLR ST/TRN Left Turn Signal/Stop Trailer
LT TRN Left Turn Signals and Sidemarkers
VEH STOP Vehicle Stoplamps, Brake Module, Electronic Throttle Control Module
BODY Harness Connector
RT TRLR ST/TRN Right Turn Signal/Stop Trailer
RT TRN Right Turn Signals and Sidemarkers
DDM Driver Door Module
AUX PWR 2, M/GATE Rear Cargo Area Power Outlets, Midgate
LCKS Power Door Lock System
ECC, TPM Rear Electronic Climate Control, Tire Pressure Monitoring System (If Equipped)
TBC 2C Truck Body Controller
FLASH (2003-2005)
HAZRD (2006)
Flasher Module
CB LT DRS Left Power Window Circuit Breaker
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller
Center instrument panel relay box

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Center instrument panel relay box (2003-2006)

Relay name Usage
SEO 2003-2005: Special Equipment Option

2006: Special Equipment Option/Off-road Lamps Harness Connector

TRAILER Trailer Brake Wiring
UPFIT Upfitter (Not Used)
SL RIDE 2003-2005: Ride Control Harness Connection

2006: Ride Control (Not Used)

HDLR 2 Headliner Wiring Connector
BODY Body Wiring Connector
DEFOG Rear Defogger Relay
HDLNR 1 Headliner Wiring Connector 1
SPARE RELAY Not Used
CB SEAT Driver and Passenger Seat Module Circuit Breaker
CB RT DOOR 2003-2005: Right Power Window Circuit Breaker

2006: Rear Right Power Window, Passenger Door Module

SPARE Not Used
INFO 2003-2004: Infotainment Harness Connection

2005-2006: Not Used

Engine Compartment Fuse Box (2003-2005)

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

*1 — Gasoline Engine and Fuel Injection Rail #2;
*2 — Gasoline Engine and Fuel Injection Rail #1;
*3 — Gasoline Engine; Oxygen Sensors;
*4 — Gasoline Engine; Oxygen Sensors;
*5 — PCM Ignition.

Assignment of the fuses and relay in the engine compartment (2003-2005)

Name Usage
GLOW PLUG Not Used
CUST FEED Accessory Power
HYBRID Hybrid
STUD #1 Auxiliary Power
MBEC Mid Bussed Electrical Center Power Feed, Front Seats, Right Doors
BLOWER Front Climate Control Fan
LBEC Left Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet—Rear Cargo Area and Instrument Panel
STUD 2 Accessory Power/Trailer Wiring Brake Feed
ABS Anti-Lock Brakes
VSES/ECAS Vehicle Stability
IGN A Ignition Power
IGN B Ignition Power
LBEC 1 Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module
TRL PARK Parking Lamps Trailer Wiring
RR PARK Right Rear Parking and Sidemarker Lamps
LR PARK Left Rear Parking and Sidemarker Lamps
PARK LP Parking Lamps Relay
STARTER Starter Relay
INTPARK Interior Lamps
STOP LP Stoplamps
TBC BATT Truck Body Controller Battery Feed
SUNROOF Sunroof
SEO B2 Off-Road Lamps
4WS Vent Solenoid Canister/Quadrasteer Module Power
RR HVAC Rear Climate Control
AUX PWR Auxiliary Power Outlet — Console
IGN 1 Ignition Relay
PCM 1 Powertrain Control Module
ETC/ECM Electronic Throttle Control, Electronic Brake Controlle
INJ 1 Ignition Coil, Fuel Injectors–Bank 1
INJ 2 Ignition Coil, Fuel Injectors–Bank 2
IGN E Conditioning Relay, Turn Signal/Hazard Switch, Starter Relay
RTD Ride Control
TRL B/U Backup Lamps Trailer Wiring
PCM B Powertrain Control Module, Fuel Pump
F/PMP Fuel Pump (Relay)
O2A Oxygen Sensors
B/U LP Back-up Lamps, Automatic Transmission Shift Lock Control System
RR DEFOG Rear Window Defogger
HDLP-HI Headlamp High Beam Relay
PRIME Not Used
O2B Oxygen Sensors
SIR Supplemental Inflatable Restraint System
FRT PARK Front Parking Lamps, Sidemarker Lamps
DRL Daytime Running Lamps (Relay)
SEO IGN Rear Defog Relay
TBC IGN1 Truck Body Controller Ignition
HI HDLP-LT High Beam Headlamp-Left
LH HID Left Hand High Intensity Discharge Lamps
DRL Daytime Running Lamps
IPC/DIC Instrument Panel Cluster/Driver Information Center
HVAC/ECAS Climate Control Controlle
CIG LTR Cigarette Lighter
HI HDLP-RT High Beam Headlamp-Right
HDLP-LOW Headlamp Low Beam Relay
A/C COMP Air Conditioning Compressor Relay
A/C COMP Air Conditioning Compressor
RR WPR Rear Wiper/Washe
RADIO Audio System
SEO B1 Mid Bussed Electrical Center, HomeLink, Rear Heated Seats
LO HDLP-LT Headlamp Low Beam-Left
BTSI Brake 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 Relay
W/S WASH Windshield and Rear Window Washer Pump Relay
W/S WASH Windshield and Rear Window Washer Pump
INFO OnStar/Rear Seat Entertainment
RADIO AMP Radio Amplifier
RH HID Right Hand High Intensity Discharge Lamp
HORN Horn Fuse
EAP Electric Adjustable Pedals
TREC All-Wheel Drive Module
SBA Supplemental Brake Assist
Engine Compartment Fuse Box (2006)

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

*1 — Gasoline Engine and Fuel Injection Rail #2;
*2 — Gasoline Engine and Fuel Injection Rail #1;
*3 — Gasoline Engine; Oxygen Sensors;
*4 — Gasoline Engine; Oxygen Sensors;
*5 — Ignition 1;
*6 — Powertrain Control Module, Fuel Pump;
*7 — Rear Climate Control;
*8 — Sunroof.

Assignment of the fuses and relay in the engine compartment (2006)

Name Usage
GLOW PLUG Not Used
CUST FEED Accessory Power
HYBRID Not Used
STUD #1 Auxiliary Power
MBEC Mid Bussed Electrical Center Power Feed, Front Seats, Right Doors
BLOWER Front Climate Control Fan
LBEC Left Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet—Rear Cargo Area and Instrument Panel
STUD #2 Accessory Power/Trailer Wiring Brake Feed
ABS Anti-Lock Brakes
VSES/ECAS Automatic Level Control (ALC) Compressor
IGN A Ignition Power
IGN B Ignition Power
LBEC 1 Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module
TRL PARK Parking Lamps Trailer Wiring
RR PARK Right Rear Parking and Sidemarker Lamps
LR PARK Left Rear Parking and Sidemarker Lamps
PARK LP Parking Lamps Relay
STRTR Starter Relay
INTPARK Interior Lamps
STOP LP Stoplamps
TBC BATT Truck Body Controller Battery Feed
SEO B2 Off-Road Lamps
4WS Vent Solenoid Canister/Quadrasteer Module Power
AUX PWR Accessory Power Outlet — Console
PCM 1 Powertrain Control Module
ETC/ECM Electronic Throttle Control, Electronic Brake Controller
IGN E Instrument Panel Cluster, Air Conditioning Relay, Turn Signal/Hazard Switch, Starter Relay
RTD Electronic Suspension Control, Automatic Level Control (ALC) Exhaust
TRL B/U Backup Lamps Trailer Wiring
F/PMP Fuel Pump (Relay)
B/U LP Back-up Lamps, Automatic Transmission Shift Lock Control System
RR DEFOG Rear Window Defogger
HDLP-HI Headlamp High Beam Relay
PRIME Not Used
AIRBAG Supplemental Inflatable Restraint System
FRT PARK Front Parking Lamps, Sidemarker Lamps
DRL Daytime Running Lamps Relay
SEO IGN Rear Defog Relay
TBC IGN1 Truck Body Controller Ignition
HI HDLP-LT Driver’s Side High Beam Headlamp
LH HID Left Hand High Intensity Discharge Lamps
DRL Daytime Running Lamps
RVC Regulated Voltage Control
IPC/DIC Instrument Panel Cluster/Driver Information Center
HVAC/ECAS Climate Control Controller
CIG LTR Cigarette Lighter
HI HDLP-RT Passenger’s Side High Beam Headlamp
HDLP-LOW Headlamp Low Beam Relay
A/C COMP Air Conditioning Compressor Relay
A/C COMP Air Conditioning Compressor
TCMB Transmission Control Module
RR WPR Not Used
RADIO Audio System
SEO B1 Mid Bussed Electrical Center, Universal Home Remote System, Rear Heated Seat
LO HDLP-LT Driver’s Side Headlamp Low Beam
BTSI Brake Transmission Shift Interlock System
CRANK Starting System
LO HDLP-RT Passenger’s Side Headlamp Low Beam
FOG LP Fog Lamp Relay
FOG LP Fog Lamps
HORN Horn Relay
W/S WASH Not Used
W/S WASH Not Used
INFO OnStar/Rear Seat Entertainment
RADIO AMP Radio Amplifier
RH HID Right Hand High Intensity Discharge Lamp
HORN Horn Fuse
EAP Electric Adjustable Pedals
TREC All-Wheel Drive Module (If Equipped)
SBA Supplemental Brake Assist
Engine Compartment Additional Fuse Block

Fuses and relays Chevrolet Avalanche (GMT800 2001-2006)

Engine Compartment Additional Block (2005-2006)

Fuses Usage
COOL/FAN Cooling Fan
COOL/FAN Cooling Fan Relay Fuse
COOL/FAN Cooling Fan Fuse
Relays
COOL/FAN 1 Cooling Fan Relay 1
COOL/FAN 3 Cooling Fan Relay 3
COOL/FAN 2 Cooling Fan Relay 2

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