Note: for removing and installing type fuses "A" use a special puller "tweezers".
The fuses are rated to blow before all wiring is damaged in the event that an overload occurs in the electrical circuits from the battery.
Note: Before replacing fuses, determine the cause of the electrical overload and make any necessary repairs.
Caution: Do not use wire instead of fuses, even for temporary installations, as this may cause damage to the electrical system and cause a fire.
1. To change the fuse, turn off the ignition.
2. Open the relay and fuse box and determine which element is burned out. Chapter "Body electrical equipment" possible locations of relay and fuse boxes in the passenger compartment and in the engine compartment are also shown.
Note: the location of the fuses in various configurations may differ slightly from those shown in the figures.
Location of the fuse box in the passenger compartment
Fuse Location (fuse box under dash (to the left of the steering column))
Fuse Location (fuse box in the car)
Location of the fuse box in the engine compartment | Fuse Location (additional fuse box for cooling fans in the engine compartment) |
Note: The fuse block covers show the names of the electrical circuits and the characteristics of the fuses.
3. Install only a fuse with the ampere rating indicated on the fuse box cover.
Note: Do not use a higher rated fuse or any other items (For example, "bugs") instead of a blown fuse. This can cause more serious damage to the electrical network up to a fire.
4. If you do not have a fuse with a nominal value, then you should use a fuse with a lower value, as close as possible to the nominal value.
Note: It is recommended to keep a set of spare fuses in the vehicle.
5. If a new fuse blows immediately, this indicates a fault in the electrical system.
Table. Block fuses in the engine compartment (models since 2003)
Fuse | Fuse circuit |
GLOW PLUG | Not in use |
OUST FEED | Line of additional power supply of the engine compartment |
STUD #1 | trailer wiring |
MBEC | Circuit breakers "SEAT ST", "RT DOOR SW" |
BLOWER | Front heater blower motor |
LBEC | Circuit breakers "LOCKS", "DDM", "PDM", "ESS", "AUX PWR 2" |
STUD 2 | trailer wiring |
ABS | ABS system |
VSES/ECAS | Suspension control system |
IGN A | Egnition lock |
IGN B | Egnition lock |
LBEC 1 | Circuit breakers "FLASH", "TBC 2A", "TBC 2V", "TBC 2C", "LT DOORS" |
TRL PARK | Trailer parking lights |
RR PARK | Rear right parking light and clearance |
LR PARK | Rear left parking light and clearance |
PARK LP | parking light relay |
STARTER | Starter relay |
INTPARK | Interior lamps |
STOP LP | Stop lights |
TBC BATT | Body electrical control unit |
SUNROOF | Electric sunroof |
SEO B2 | (Modifications) Searchlights |
4WS | 4WS system |
RR HVAC | Rear air conditioner/heater |
AUX PWR | Connector for connecting additional equipment (center console) |
IGN 1 | Ignition Switch Relay |
PCM 1 | Power unit control unit |
ETC/ECM | Throttle control unit |
INJ 1 | Ignition Coil, Fuel Injectors - Bank 1 |
INJ 2 | Ignition Coil, Fuel Injectors - Bank 2 |
IGN E | Instrument Cluster, Dashboard, A/C Relay, Hazard/Turn Signal Switch, Starter Relay |
RTD | Suspension control system |
TRL B/U | Trailer reversing lights |
PCM B | Powertrain ECM, fuel pump |
F/PMP | Fuel pump (relay) |
O2A | oxygen sensors |
B/U LP | Reversing lights, automatic transmission selector lock system |
RR DEFOG | Rear door glass defroster |
HDLP-HI | High Beam Relay |
PRIME | Not used |
O2B | oxygen sensors |
SIR | Passive safety system |
FRT PARK | Front parking lights and dimensions |
DRL | Daylight lamps (relay) |
SEO IGN | Rear window defroster relay |
TBC IGN1 | Trailer electrical equipment |
HI HDLP-LT | High beam - left headlight |
LH HID | Left gas discharge headlight |
DRL | Daylight lamps |
IPC/DIC | Instrument cluster / multifunction display |
HVAC/ECAS | Air conditioning control unit |
CIG LTR | cigarette lighter |
HI HDLP-RT | High beam - right headlight |
HDLP-LOW | Relay low beam headlights |
A/C COMP | A/C Compressor Magnetic Clutch Relay |
A/C COMP | Air conditioning compressor |
RRWPR | Rear door glass cleaner/washer |
RADIO | radio tape recorder |
SEO B1 | HomeLink system, rear seat heaters |
LO HDLP-LT | Dipped beam - left headlight |
BTSI | Stoplight switch |
CRANK | Launch system |
LO HDLP-RT | Dipped beam - right headlight |
FOG LP | Fog lamp relay |
FOG LP | Fog lights |
HORN | Horn relay |
W/S WASH | Windshield/Rear Door Washer Pump Relay |
W/S WASH | Windshield washer/rear glass washer pump |
INFO | Audio and video system for rear passengers |
RADIO AMP | Radio amplifier |
RH HID | Right gas discharge headlight |
HORN | Horn circuit fuse |
EAP | Pedal unit adjustment drive |
TREC | 4WD control unit |
SBA | Anti-Lock Braking System (ABS) |
Fuse Location (fuse box in the engine compartment)
Table. Block fuses in the passenger compartment (models since 2003)
Fuse | Fuse circuit |
RR Wiper | Rear window wiper switch |
SEO ACCY | Optional equipment |
WS WPR | Windshield wipers |
TBC ACCY | Body electronic control unit |
IGN 3 | Ignition system, seat heaters |
4WD | 4WD system |
HTR A/C | Air conditioning and heating system |
LOCK | Central lock relay (blocking) |
HVAC 1 | Interior rear view mirror with auto dimming system, air conditioning and heating system |
L DOOR | Electrical equipment of the driver's door |
CRUISE | Speed control system |
UNLOCK | Central lock relay (unlocking) |
RR FOG LP | (Modifications) Fog lamp |
BRAKE | Anti-Lock Braking System |
DRIVER UNLOCK | Central lock relay (driver's door unlock) |
IGN 0 | Electronic powertrain control unit, automatic transmission components |
TBCIGN 0 | Electronic powertrain control unit |
VEH CHMSL | Upper brake light (car and trailer) |
LT TRLR ST/TRN | Left Turn Signal/Trailer Brake Light |
LT TRN | Left direction indicators and dimensions |
VEH STOP | Stop lights, tail lights, rear turn signals, throttle control unit |
Body | Wiring connector |
RT TRLR ST/TRN | Right Turn Signal/Trailer Brake Light |
RT TRN | Right direction indicators and dimensions |
DDM | Driver door electrical control unit |
AUX PWR 2 | Connectors for connecting additional equipment (in the luggage compartment) |
LOCKS | central locking |
ECC | Rear A/C/Heater, Power Rear Door |
TBC 2C | Body electronic control unit |
FLASH | Relay-interrupter of direction indicators |
CB LT DOORS | Thermal fuse for the electric drive of the left window lifter |
TBC2B | Body electronic control unit |
TBC 2A | Body electronic control unit |
Table. Fuses for the optional cooling fan fuse box in the engine compartment (models since 2003)
Fuse | Fuse circuit |
COOL/FAN | Cooling fan motor |
COOL/FAN | Cooling Fan Motor Relay Fuse |
COOL/FAN | Fuse of the electric motor of the cooling system fan |
COOL/FAN 1 | Cooling fan motor relay 1 |
COOL/FAN 3 | Cooling fan motor relay 3 |
COOL/FAN 2 | Cooling fan motor relay 2 |
Table. Block fuses under the instrument panel (to the left of the steering column) (models since 2003)
Fuse | Fuse circuit |
SEO | Optional equipment |
TRAILER | Trailer electrical equipment |
UPFIT | Not used |
SL RIDE | Suspension control system |
HDLR 2 | Additional equipment on the roof panel |
BODY | Body electrical equipment |
DEFOG | Rear window defroster relay |
HDLNR1 | Additional equipment on the roof panel |
SPARE RELAY | Not used |
CB SEAT | Thermal fuse for the driver and passenger seat electrical control unit |
CB RT DOOR | Thermal fuse for the electric drive of the right window lifter |
SPARE | Not used |
INFO | (Except Chevrolet Avalanche) instrument cluster |