GM Service Manual Online
For 1990-2009 cars only

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

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 one of the identical size and rating. If a fuse blows, see your dealer for service immediately.

If you ever have a problem on the road and don't have a spare fuse, you can "borrow" one that has the same amperage. Pick some feature of your vehicle that you can get along without - like the radio or cigarette lighter - and use its fuse, if it is the correct amperage. Replace it as soon as you can.

The fuses are located in three fuse blocks, one located in the engine compartment on the passenger's side and the other two under the rear seat.

Underhood Fuse Block


Object Number: 829498  Size: B3

The underhood fuse block is located in the engine compartment on the passenger's side of the vehicle. See Engine Compartment Overview for more information on location.

To access the fuses, push in the two tabs located on each side of the fuse block cover. Then lift the cover off.


Object Number: 1385738  Size: B3

Relays

Usage

LO SPEED FAN RELAY MINI

Low Speed Fan Motor

HI SPEED FAN RELAY MINI

High Speed Fan Motor

ACCESSORY RELAY MINI

Accessory Power Outlets

S/P FAN RELAY MINI

Series/Parallel Fan

PARK LAMP RELAY MICRO

Parking Lamps

HORN RELAY MICRO

Horn

HI BEAM RELAY MICRO

High-Beam Headlamps

DRL RELAY MICRO-OPT

Daytime Running Lamps

LO BEAM RELAY/HID MINI-OPT

Low-Beam HID Headlamps

HDLP WASH RELAY MINI-OPT

Headlamp Washer Motor

SPARE

Not Used

BLOWER RELAY MINI

Front Blower

FOG LAMP RELAY MICRO

Fog Lamps

MAIN RELAY MICRO

Powertrain/ECM

STARTER RELAY MINI

Starter Solenoid

CMP CLU RELAY MICRO

Compressor Clutch

IGN-1 RELAY MICRO

Ignition Switch (ON)

Wiring Harnesses

Usage

BODY W/H

Wiring Harness Connection

I/P W/H

Wiring Harness Connection

ENG W/H

Engine Wiring Harness Connection

FORWARD LAMP

Forward Lamp Wiring Harness Connection

J Cases

Usage

R REAR

RRPDB (Passenger's Side Rear Power Distribution Box)

R REAR

RRPDB (Passenger's Side Rear Power Distribution Box)

L REAR

LRPDB (Driver's Side Rear Power Distribution Box)

L REAR

LRPDB (Driver's Side Rear Power Distribution Box)

HI FAN

High Cooling Fan Motor

LO FAN

Low Cooling Fan Motor

BLOWER

PWM Fan Motor Assembly

STARTER

Starter Solenoid

ABS

Anti-Lock Brake System

Fuses

Usage

RT PARK

Passenger's Side Taillamp Assembly, Front Sidemarker and Front Parking Lamp Assembly

HORN

Dual Horn Assembly

LT HI BEAM

Driver's Side High-Beam Headlamp

LT LOW BEAM

Driver's Side Low-Beam Headlamp

RT LOW BEAM

Passenger's Side Low-Beam Headlamp

RT HI BEAM

Passenger's Side High-Beam Headlamp

SPARE

Not Used

SPARE

Not Used

THEFT

ECM (Electronic Control Module), TCM (Transmission Control Module), PASS-Key III+ Module

LT PARK

Driver's Side Taillamp Assembly, Front Sidemarker and Front Parking Lamp Assembly

DIMMING

Rear License Plate Assembly, Dash Integrated Module (DIM)

DIM/ALDL

DIM, ALDL (Assembly Line Data Link)

FLASHER

Turn Signal/Hazard Flasher Module

ECM

Electronic Control Module

STRG CTLS

Steering Wheel Control Pad, Headlamp Switch

HTR VLV/CLTCH

Heater Valve, Clutch Switch (Normal Closed), Clutch Switch (Normal Open), Jumper to Start Relay Coil for Automatic Transmission

WASH NOZ

Driver's and Passenger's Side Heated Washer Nozzles

PRE O2/CAM

Driver's & Passenger's Side Oxygen Sensors, Transmission Output Speed Sensor, CAM Phaser

TCM/IPC

TCM, ECM and IPC (Instrument Panel Cluster)

SPARE

Not Used

IGN MOD/MAF

Front Bank Ignition Modules

ELEC PRNDL

Electronic PRNDL

SPARE

Not Used

SPARE

Not Used

IGN SW

Ignition Switch (Power to IGN-3 and CRANK)

VOLT CHECK

DIM (Dash Integration Module)

ECM/TCM

TCM (Transmission Control Module), ECM (Electronic Control Module), IPC (Instrument Panel Cluster), PASS-Key III+ Module

WPR MOD

Windshield Wiper Module Assembly

ODD INJ/COILS

Odd Ignition Coils, Fuel Injectors, Odd Injection Coils

COMP CLUTCH

Compressor Clutch

WPR SW

Windshield Wiper/Washer Switch

FOG LAMP

Fog Lamps

OUTLET

Center Console Accessory Power Outlet

POST 02

Driver's and Passenger's Side Oxygen Sensors, LRPDB (Pusher Cooling Fan Relay)

I/P OUTLET

Instrument Panel Accessory Power Outlet

CCP

Climate Control

EVEN INJ/COILS

Even Injection Coils

SPARE

Not Used

SPARE

Not Used

SPARE

Not Used

Circuit Breakers

Usage

HDLP WASH C/B-OPT

Headlamp Washer Motor