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Chevrolet Avalanche (2006) - fuse box diagram

avatar Jonathan Yarden Mar 27, 2021 · 5 min. read

In this article you will find a description of fuses and relays Chevrolet, with photos of block diagrams and their locations. Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.

Year of production: 2006

Instrument Panel Fuse Block

The fuse block access door is on the driver’s side edge of the instrument panel.

Chevrolet Avalanche - fuse box diagram - instrument panel

Name Usage
RR Wiper 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
HAZRD Flasher Module
CB LT DRS Left Power Window Circuit Breaker
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller


Center instrument panel utility block

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

Chevrolet Avalanche - fuse box diagram - center instrument panel

Relay name Usage
SEO Special Equipment Option/Off-road Lamps Harness Connector
TRAILER Trailer Brake Wiring
UPFIT Upfitter (Not Used)
SL RIDE Ride Control (Not Used)
HDLR 2 Headliner Wiring Connector 2
BODY Body Wiring Connector
DEFOG Rear Defogger Relay
HDLNR 1 Headliner Wiring Connector 1
CB SEAT Driver and Passenger Seat Module Circuit Breaker
CB RT DOOR Rear Right Power Window, Passenger Door Module
SPARE Not Used
INFO Not Used

Underhood fuse block

The underhood fuse block is located near the battery on the driver’s side of the vehicle.

Chevrolet Avalanche - fuse box diagram - engine compartment

*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

Fuse Usage
CUST FEED Accessory Power
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

Auxiliary Electric Cooling Fan Fuse Block

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 fuse block.

Chevrolet Avalanche - fuse box diagram - auxiliary electric cooling fan

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

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

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