Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Fuse Layout Chevrolet Silverado 1999-2007

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Fuse box location

Instrument Panel

The fuse box is located on the driver’s side of the instrument panel, behind the cover.Fuses and relays Chevrolet Silverado (mk1 1999-2007)

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 Silverado (mk1 1999-2007)

Auxiliary Electric Cooling Fan Fuse Block

It is located in the engine compartment on the driver’s side of the vehicle next to the underhood fusebox.

Fuse box diagrams

1999, 2000, 2001, 2002

Instrument Panel

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Assignment of the fuses in the Instrument Panel (1999-2002)

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

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Center instrument panel relay box (1999-2002)

Name Usage
SEO Special Equipment Option
HTDST Heated Seats
SPARE 4 Not Used
VANITY Headliner Wiring
TRAILER Trailer Brake Wiring
PWRST Power Seats
SPARE 5 Not Used
CLUTCH Manual Transmission Clutch Switch
UPF Upfitter
PARK LAMP Parking Lamps (Relay)
FRT PRK EXPT Not Used (Fuse)
SL RIDE Manual Selectable Ride Switch
SPARE 2 Not Used
RR PRK LP Not Used (Relay)
RR FOG LP Not Used (Relay)
SPARE 3 Not Used
INADV PWR Interior Lights Feed
CTSY LP Courtesy Lamps
CEL PHONE Cellular Telephone Wiring
Engine Compartment

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

*1: INJ B – Gasoline Engine and Diesel Engine
*2: ECM I – Gasoline Engine; ECMRPV – Diesel Engine
*3: 02 A – Gasoline Engine; FUEL HT – Diesel Engine
*4: 02 B – Gasoline Engine; ECM I – Diesel Engine

Assignment of the fuses and relay in the Engine Compartment (1999-2002)

Name Usage
GLOW PLUG Diesel Glow Plugs and Intake Air Heater
CUST FEED Gasoline Accessory Power
STUD #1 Accessory Power/Trailer Wiring Feed
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 Not Used
STUD #2 Accessory Power/Trailer Wiring Brake Feed
SPARE Spare Fuse
TRL R TRN Right Turn Signal Trailer Wiring
TRL L TRN Left Turn Signal Trailer Wiring
IGN 1 Ignition, Fuel Controls (Relay)
INJB Ignition, Fuel Controls
STARTER Starter (Relay)
PARK LP Parking Lamps
FRT HVAC Climate Control System
STOP LP Exterior Lamps, Stoplamps
ECM I PCM
ECMRPV Fuel Controls, ECM
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)
RR PRK Right Rear Parking Lamps
ECM B PCM
F/PMP Fuel Pump (Relay)
02 A Oxygen Sensors
FUEL HT Fuel Heater, Glow Plug and Intake Heater Controls
02 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
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, Cell Phone, OnStar®
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 Not Used
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

Instrument Panel

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Assignment of the fuses in the Instrument Panel (2003-2005)

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, Auxiliary Battery
HTR A/C Climate Control System
LOCK (Relay) Power Door Lock Relay (Lock Function)
HVAC 1 Climate Control System
L DOOR Driver”s Door Harness Connection
CRUISE Cruise Control, Power Take Off (PTO)
UNLOCK (Relay) Power Door Lock Relay (Unlock Function)
RR FOG LP Not Used
BRAKE Anti-Lock Brake System
DRIVER UNLOCK Power Door Lock Relay (Driver”s Door Unlock Function)
IGN 0 TCM
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
RT TRLR ST/TRN Right Turn Signal/Stop Trailer
RT TRN Right Turn Signals and Sidemarkers
BODY Harness Connector
DDM Driver Door Module
AUX PWR 2 Not Used
LOCKS Power Door Lock System
ECC Not Used
TBC 2C Truck Body Controller
FLASH Flasher Module
CB LT DOORS Left Power Windows Circuit Breaker
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller
Center instrument panel relay box

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Center instrument panel relay box (2003-2007)

Device Usage
SEO Special Equipment Option
TRAILER Trailer Brake Wiring
UPFIT Upftter (Not Used)
SL RIDE Ride Control Harness Connection
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 Right Power Windows Circuit Breaker
SPARE Not Used
INFO Infotainment Harness Connection
Engine Compartment

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Assignment of the fuses and relay in the Engine Compartment (2003-2005)

Name Usage
GLOW PLUG Diesel Glow Plugs and Intake Air Heater
CUST FEED Gasoline Accessory Power
STU D #1 Auxiliary Power (Single Battery and Diesels Only)/ Dual Battery (TP2) Do not install fuse.
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 Not Used
AUX PWR Auxiliary Power Outlet 7 Console
IGN 1 Ignition Relay
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, Staiter Relay
RTD Ride Control
TRL B/U Backup Lamps Trailer Wiring
PCM B Powertrain Control Module, Fuel Pump
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
02B Oxygen Sensors
SIR Supplemental ln?atable 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 Not Used
DRL Daytime Running Lamps
IPC/DIC Instrument Panel Cluster/Driver Information Center
HVAC/ECAS Climate Control Controller
CIG LTR Cigarette Lighter
HI HDLP-RT High Bearn Headlamp-Right
HDLP-LOW Headlamp Low Beam Relay
A/C COMP Air Conditioning Compressor
A/C COMP Air Conditioning Compressor Relay
RR WPR Not Used
RADIO Audio System
SEO B1 Mid Bussed Electrical Center, Rear Heated Seats, HomeLink
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 Washer Pump Relay
W/S WASH Windshield Washer Pump
INFO OnStar/Rear Seat Entertainment
RADIO AMP Radio Ampli?er
RH HID Not Used
HORN Horn
EAP Not Used
TREC All-Wheel Drive Module
SBA Supplemental Brake Assist
RVC Regulated Voltage Control (2005)
INJ 2/15A Fuel Injection Rail #2
INJ 1/15A Fuel Injection Rail #1
02A/15A Oxygen Sensors
02B/15A Oxygen Sensors
IGN 1 Ignition 1
ECMHPV/15A Engine Control Module
FUEL HT/15A Fuel Heater
ECMI/15A Engine Control Module
Auxiliary Electric Cooling Fan Fuse Block

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

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

2006, 2007

Instrument Panel

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Assignment of the fuses in the Instrument Panel (2006, 2007)

Name Usage
RR WPR 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, Auxiliary Battery
HTR A/C Climate Control System
LOCK (Relay) Power Door Lock Relay (Lock Function)
HVAC 1 Climate Control System
LT DR Driver”s Door Harness Connection
CRUISE Cruise Control, Power Take Off (PTO)
UNLCK (Relay) Power Door Lock Relay (Unlock Function)
RR FOG LP Not Used
BRAKE Anti-Lock Brake System
DRIVER UNLCK Power Door Lock Relay (Driver”s Door Unlock Function)
IGN 0 TCM
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 LeftTurn Signals and Sidemarkers
VEH STOP Vehicle Stoplamps, Brake Module, Electronic Throttle Control Module
RT TRLR ST/TRN Right Turn Signal/Stop Trailer
RT TRN RiahtTurn Signals and Sidemarkers
BODY Harness Connector
DDM Driver Door Module
AUX PWR 2, M/GATE Not Used
LCKS Power Door Lock System
ECC, TPM Tire Pressure Monitoring System
TBC 2C Truck Body Controller
HAZRD Flasher Module
CB LT DRS Left Power Windows Circuit Breaker
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller
Center instrument panel relay box

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Center instrument panel relay box (2003-2007)

Device Usage
SEO Special Equipment Option
TRAILER Trailer Brake Wiring
UPFIT Upftter (Not Used)
SL RIDE Ride Control Harness Connection
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 Right Power Windows Circuit Breaker
SPARE Not Used
INFO Infotainment Harness Connection
Engine Compartment

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

Assignment of the fuses and relay in the Engine Compartment (2006, 2007)

Name Usage
GLOW PLUG Diesel Glow Plugs and Intake Air Heater
CUST FEED Gasoline Accessory Power
HYBRID Hybrid
STUD #1 Auxiliary Power (Single Battery and Diesels Only)/ Dual Battery (TP2) Do not install fuse.
MBEC Mid Bussed Electrical Center Power Feed. Front Seats, Right Doors
BLWR 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
TRLPARK 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 Not Used
AUX PWR Auxiliary Power Outlet – Console
PCM 1 Powertrain Control Module
ETC/ECM Electronic Throttle Control, Electronic Brake Controller-Gasoline Engine, Fan Clutch-Diesel Engines
IGN E Instrument Panel Cluster, Air Conditioning Relay, Turn Signal/Hazard Switch, Starter Relay
RTD Ride Control
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 ln-atable 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 Not Used
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 High Beam Headlamp-Right
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, Rear Heated Seats, Universal Home Remote System
LO HDLP-LT Headlamp Low Beam-Left
BTSI Brake Transmission Shift Interlock System
CRNK Starting System
LO HDLP-RT Headlamp Low Beam-Right
FOG LP Fog Lamps Relay
FOG LP Fog Lamps
HORN Horn Relay
W/S WASH Windshield Washer Pump Relay
W/S WASH Windshield Washer Pump
INFO OnStar/Rear Seat Entertainment
RADIO AMP Radio Amplifer
RH HID Not Used
HORN Horn
EAP Not Used
TREC Not Used
INJ2 Fuel Injection Rail #2
INJ 1 Fuel Injection Rail #1
02A Oxygen Sensors
02B Oxygen Sensors
IGN 1 Ignition 1
PCM B Powertrain Control Module B
SBA Supplemental Brake Assist
ECM Engine Control Module
ACTUATOR Actuator
FUEL HTR Fuel Heater
ECM 1 Engine Control Module 1
ECM Engine Control Module
ECM B Engine Control Module B
EV FAN Electronic Viscous Fan
RR HVAC Rear Climate Control
S/ROOF Sunroof
Auxiliary Electric Cooling Fan Fuse Block

Fuses and relays Chevrolet Silverado (mk1 1999-2007)

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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