GM Service Manual Online
For 1990-2009 cars only
Table 1: Underhood Fuse Block Maxifuses
Table 2: Underhood Fuse Block Minifuses -- Minifuses Circuit Feeds
Table 3: Underhood Fuse Block Relays -- Relay Circuit Feeds
Table 4: Left Instrument Panel Fuse Block Minifuses- Minifuses Circuit Feeds
Table 5: Right Instrument Panel Fuse Block Minifuses -- Minifuses Circuit Feeds
Table 6: Left Instrument Panel Fuse Block Relays Modules-- Relay Circuit Feeds
Table 7: Right Instrument Panel Fuse Block Relays/Modules -- Relay Circuit Feeds

The wiring circuits in your vehicle are protected from short circuits by a combination of fuses. This greatly reduces the chance of fires caused by electrical problems.

There are three fuse blocks -- the "underhood fuse block," the "left instrument panel fuse block" and the "right instrument panel fuse block."

To identify and check fuses and relays, refer to the Fuse Usage Chart on the inside surface of the fuse panel door.

Instrument Panel Fuse Block


Object Number: 1566733  Size: B4

The left instrument panel fuse block is located by driver's left leg.


Object Number: 1566736  Size: B4

The right instrument panel fuse block is located by the passenger's right leg.

Use a key or a coin to remove the fuse panel door and access the fuses and relays.

Underhood Fuse Block


Object Number: 1566737  Size: B3

The underhood fuse block is located in the forward part of the engine compartment near the battery. Six spare minifuses and a fuse-puller are located in the underhood fuse block. These spare minifuses can be used to replace underhood and instrument panel fuse block minifuses. When you replace a bad fuse, be sure to use one with the same rating.

Replace spare fuses as they are used as soon as you can. To identify and check fuses and relays, refer to the fuse and relay usage chart inside the fuse block cover.

To remove a fuse, place the wide end of the fuse puller over the plastic end of the fuse. Squeeze the ends over the fuse and pull it out. A fuse puller is also located on the instrument panel junction block panel access door.

Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new of the same amperage.

This chart lists the maxifuses and the minifuses they control and the following chart lists the systems they control.

Underhood Fuse Block Maxifuses

FUSE

COLOR (AMP)

SYSTEM

IGN S 1/2

Green (30)

Feeds ignition SW

IGN S 0/3/CR

Green (30)

Feeds ignition SW

COOL 1

Green (30)

Feeds directly to cooling fan module

COOL 2

Green (30)

Feeds directly to cooling fan module

ABS 1

Green (30)

ABS power feed

ABS 2

Green (30)

ABS power feed

Window/Sunroof

Green (30)

Feeds power window relay, sunroof

HVAC Blower

Amber (40)

Feeds Hi Blower

The following chart lists the minifuses, located in the underhood fuse block, and the circuits they control.

Underhood Fuse Block Minifuses -- Minifuses Circuit Feeds

FUSE

COLOR (AMP)

SYSTEM

HORN

Red (10)

Horn

R HDLP

Red (10)

Right Headlamps

L HDLP

Red (10)

Left Headlamps

A/C

Red (10)

Air Conditioning System

LIGHTER

Yellow (20)

Cigar Lighter

AUX POWER

Yellow (20)

Power Outlet

RIGHT I/P BATT

Green (30)

Right Instrument Panel Fuse Block

CONTROLS B+

Red (10)

Powertrain Control Module (2.2L L4), Engine Control Module (3.0L V6), Transaxle Control Module (3.0L V6)

BCM 2

Yellow (20)

Body Control Module

BCM/ECM/CRUISE/ABS

Red (10)

Body Control Module, Engine Control Module, Cruise Control, ABS

EIS

Red (10)

Electronic Ignition System (2.2L L4)

IGN

Blue (15)

Ignition Coils (3.0L V6)

INJ

Red (10)

Fuel Injectors (2.2L L4)

B/U LP

Red (10)

Backup Lamps, Coolant Level Switch

BRAKE/PARK LOCK

Red (10)

Brake Lamps

FUEL PUMP

Blue (15)

Fuel Pump Relay

IGN 0

Red (10)

Park Neutral Position Switch, Powertrain Control Module

CRUISE SW

Gray (2)

Cruise Control Switch

CONTROLS IGN 1

Red (10)

Cooling Fan Control Module, Powertrain Control Module, Transaxle (2.2L L4), Transaxle Control Module (3.0L V6)

IGN 1

Red (10)

Instrument Cluster, Coolant Level Switch, Air Bag Electronic PRNDL

BCM/CLUSTER

Red (10)

Body Control Module, Instrument Cluster, Dimmer Switch

PARK

Red (10)

Front Park Lamps, Taillamps, Front Marker Lamps, Rear Marker Lamps, License Lamps, Radio Display Lights, I/P Cluster Backlighting, I/P Dimmer, Cigar Lighter Ring, Ashtray Light, PRNDL Light, HVAC Control Switch Backlighting

HAZARD

Red (10)

Hazard Flasher, HBTT (Headlamp HI Beam Indicator), I/P Cluster

REAR DEFOG

Natural (25)

Rear Window Defogger

RADIO

Red (10)

Audio System, On Star (If Equipped)

CD/DLC

Blue (15)

Audio, Data Link Connector (DLC)

ING 3 (2.2L L4)

Red (10)

Cruise Clutch Switch, Emissions Controls, A/C Relay, Heated Oxygen Sensor, Vehicle Speed Signal Conditioner Module (2.2L L4 engine with manual transaxle and no ABS)

ENG CNTL

Red (10)

3.0L V6 Engine

ENG CNTL

Red (10)

3.0L V6 Engine

ENG CNTL

Red (10)

3.0L V6 Engine

Devices A/C Diode

-

A/C Diode (For Electrical System Protection)

The following chart lists the relays, located in the underhood fuse block, and the systems they control.

Underhood Fuse Block Relays -- Relay Circuit Feeds

RELAY

SYSTEM

A/C CLUTCH

Air Conditioning System

DRL

Daytime Running Lamps

HORN

Horn

MAIN

3.0L V6 Engine)

The following chart lists the minifuses, located in the left instrument panel fuse block, and the systems they control.

NOTE: Fuses are numbered in instrument panel fuse block. A label is provided on the fuse block access panel for fuse system description.

Left Instrument Panel Fuse Block Minifuses- Minifuses Circuit Feeds

FUSES

COLOR (AMP)

SYSTEM

RADIO

Red (10)

Audio, On Star (If Equipped)

WIPER

Natural (25)

Windshield Wipers and Washers (Front)

HVAC SW

Yellow (20)

HVAC Controls

IGN 3

Red (10)

Left Heated Seat Switch, Right Heated Seat Switch, Air Conditioning, Rear Defrogger Relay

DEFOG

Red (10)

Rear Defog

BTSI/BCM/MIRROR

Red (10)

Brake Transaxle Shift Interlock, Body Control Module, Power Mirror

Diode RR COMP LP

-

Trunk Compartment Lamp

The following chart lists the minifuses, located in the right instrument panel fuse block, and the systems they control.

Right Instrument Panel Fuse Block Minifuses -- Minifuses Circuit Feeds

FUSE

COLOR (AMP)

SYSTEM/FEED

LOCKS

Yellow (20)

Power Door Locks

BODY

Red (10)

Power Door Locks, Heated Mirror Relay, Liftgate Latch

POWER SEAT

Natural (25)

Power Seat

FOG LAMP

Red (10)

Fog Lamps

PREM AMP/MCS

Blue (15)

Premium Sound System Amplifier

HEATED SEATS

Yellow (20)

Seat Heater

RR WIPER/SUN ROOF

Yellow (20)

Rear Wiper/Washer (Wagon)

The following chart lists the relays and modules, located in the left instrument panel fuse block, and the systems they control.

Left Instrument Panel Fuse Block Relays Modules-- Relay Circuit Feeds

RELAY

SYSTEM

F PUMP

Electric Fuel Pump

RR DEFOG

Rear Defogger

HVAC BLOWER RELAY

HVAC Blower Motor

FRONT WIPER

Front Wiper/Washer

The following chart lists the relays and modules, located in the right instrument panel fuse block, and the systems they control.

Right Instrument Panel Fuse Block Relays/Modules -- Relay Circuit Feeds

RELAY

SYSTEM

POWER WINDOW

Power Windows, Power Sunroof

DRIVER DOOR UNLOCK RELAY

Driver Door Unlock

DOOR UNLOCK RELAY

Door Unlock

DOOR LOCK RELAY

Door Lock

HEATED MIRROR

Power Mirrors

FOG LAMP

Fog Lamps

REAR WIPER

Rear Wiper/Washer (Wagon)