Chevrolet Avalanche (GMT800; 2001-2006) fuses and relays

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In this article, we consider the first-generation Chevrolet Avalanche (GMT800), produced from 2001 to 2006. Here you will find fuse box diagrams of Chevrolet Avalanche 2001, 2002, 2003, 2004, 2005 and 2006, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

See other Chevrolet Avalanche:

Chevrolet Avalanche (GMT900; 2007-2013)…>>

Fuse Layout Chevrolet Avalanche 2001-2006

Cigar lighter / power outlet fuses in the Chevrolet Avalanche are located in the Engine Compartment fuse box. 2001-2002 – see fuses “AUX PWR” and “CIGAR”. 2003-2006 – see fuses “AUX PWR” (Auxiliary Power Outlet – Console), “CIG LTR” (Cigarette Lighter) in the Engine Compartment fuse box and fuse “AUX PWR 2, M/GATE” (Rear Cargo Area Power Outlets, Midgate) in the Instrument Panel Fuse Box.

Table of Contents

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.

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

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

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2001, 2002

Instrument Panel

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

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Center instrument panel relay box

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

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Engine Compartment

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

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Instrument Panel

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

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Center instrument panel relay box

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

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Engine Compartment Fuse Box (2003-2005)

*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

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Engine Compartment Fuse Box (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

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Engine Compartment Additional Fuse Block

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

Learn more:

How to check the fuses?

How to replace a blown fuse?

Why do car fuses blow?

Types of automotive fuses

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