GM Service Manual Online
For 1990-2009 cars only

Electrical Center Identification Views L61

Table 1: Maxifuse/Minifuse Feeds
Table 2: Relay Circuit Feeds
Table 3: Misc Devices
Table 4: Minifuse Circuit Feeds

Underhood Fuse Block Diagram


Object Number: 889793  Size: FP

Underhood Fuse Block Charts

This chart lists the maxifuses and minifuses they control.

Maxifuse/Minifuse Feeds

NO.

FUSE

(CB)

COLOR

(AMP)

SYSTEM

1

COOL FAN 1

Green (30)

Cooling Fan Control Module

2

COOL FAN 2

Green (30)

Cooling Fan Control Module

3

IGN 1/2

Green (30)

Ignition Switch

4

IGN 0/3/CR

Green (30)

Ignition Switch

5

ABS I

Green (30)

Electronic Brake/Traction Control Module

6

ABS II

Green (30)

Electronic Brake/Traction Control Module

7

HVAC BLOWER AMBER

Green (30)

HVAC Blower Relay

8

WDO/SUNROOF/AIR

Circuit Breaker (30)

Window Relay/Sunroof Assembly/Secondary Air

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

Relay Circuit Feeds

RELAY

MAXIMUM

LOAD

SYSTEM

DRL

20 Amp

Daytime Running Lamps

HORN

20 Amp

Horn

A/C

20 Amp

A/C Compressor

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

Misc Devices

DEVICE

SYSTEM

Oil Life Reset

Body Control Module

A/C Diode

A/C Compressor

Fuse Puller

None

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

Minifuse Circuit Feeds

FUSE

COLOR

(AMP)

SYSTEM

LIGHTER

Yellow (20)

Cigar Lighter

LHDLP

Blue (15)

Left Headlamp - High and Low Beam

RHDLP

Blue (15)

Right Headlamp - High and Low Beam

BCM 2

Red (10)

Body Control Module

IGN 3

Red (10)

Evaporative Emission Canister Purge Solenoid/Cruise Clutch Switch/EVAP Vent Solenoid/Heat Oxygen Sensor 2

AUX

Yellow (20)

Auxiliary Power Outlet

RT IP BATT

Green (30)

Door Locks/Heat Mirror Relay/Power Seat/Premium Sound Amplifier/Fog Lamp Relay

CONTROL B+

Red (10)

Powertrain Control Module

HORN

Red (10)

Horn Relay

FUEL PUMP

Blue (15)

Fuel Pump Relay

A/C

Red (10)

A/C Relay

IGN 0

Red (10)

Powertrain Control Module

RR DEFOG

Natural (25)

Rear Defog Relay

BCM/ECM/CRUISE/ABS

Red (10)

Electronic Brake/Traction Control Module/Cruise Control Module/Body Control Module/Cruise Brake Switch/Cruise Switch Fuse

CRUISE SW

Grey (2)

Horn/Cruise Switch

INJ

Red (10)

Fuel Injectors

CONTROLS IGN 1

Red (10)

Powertrain Control Module/Cooling Fan Control Module/Automatic Transaxle

HAZARD

Blue (15)

Hazard Switch

IGN 1

Red (10)

I/P Cluster/Coolant Level Switch/Electronic PRNDL Module/Sensing and Diagnostic Module

BRAKE

Blue (15)

Stop Lamp Switch

PARK LP

Red (10)

Headlamp/Turn Signal Switch

EIS

Red (10)

Electronic Ignition Module

BU/TURN

Red (10)

Park/Neutral Position Switch/Back-Up Switch/Hazard Switch

BCM/CLUSTER

Blue (15)

Body Control Module/I/P Cluster/Decklid Release/Dimmer Switch

RADIO

Red (10)

Radio

CD/DLC

Blue (15)

Data Link Connector/Radio

Electrical Center Identification Views L81

Table 1: Maxifuse/Minifuse Feeds
Table 2: Relay Circuit Feeds
Table 3: Misc Devices
Table 4: Minifuse Circuit Feeds

Underhood Fuse Block Diagram


Object Number: 889798  Size: FP

Underhood Fuse Block Charts

This chart lists the maxifuses and minifuses they control.

Maxifuse/Minifuse Feeds

NO.

FUSE

(CB)

COLOR

(AMP)

SYSTEM

1

COOL FAN 1

Green (30)

Cooling Fan Control Module

2

COOL FAN 2

Green (30)

Cooling Fan Control Module

3

IGN 1/2

Green (30)

Ignition Switch

4

IGN 0/3/CR

Green (30)

Ignition Switch

5

ABS I

Green (30)

Electronic Brake/Traction Control Module

6

ABS II

Green (30)

Electronic Brake/Traction Control Module

7

HVAC BLOWER

Green (30)

HVAC Blower Relay

8

WDO/SUNROOF/AIR

Circuit Breaker (30)

Window Relay/Sunroof Assembly

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

Relay Circuit Feeds

RELAY

MAXIMUM

LOAD

SYSTEM

DRL

20 Amp

Daytime Running Lamps

MAIN

20 Amp

Engine Control 1/2/3 Fuses

HORN

20 Amp

Horn

A/C

20 Amp

A/C Compressor

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

Misc Devices

DEVICE

SYSTEM

Oil Life Reset

Body Control Module

A/C Diode

A/C Compressor

Fuse Puller

None

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

Minifuse Circuit Feeds

FUSE

COLOR

(AMP)

SYSTEM

LIGHTER

Yellow (20)

Cigar Lighter

LHDLP

Blue (15)

Left Headlamp - High and Low Beam

RHDLP

Blue (15)

Right Headlamp - High and Low Beam

BCM2

Red (10)

Body Control Module

ENG CNTL 1

Red (10)

A/C Relay, Mass Airflow Sensor, Evaporative Emission Canister Purge Solenoid, Heated Oxygen Sensor Bank 2, Sensors 1 and 2 Linear Exhaust Gas Recirculation Valve

ENG CNTL 2

Red (10)

Fuel Injectors, Variable Intake Manifold Solenoid

AUX

Yellow (20)

Auxiliary Power Outlet

RT IP BATT

Green (30)

Door Locks/Heat Mirror Relay/Power Seat/Premium Sound Amplifier/Fog Lamp Relay

ENG CNTL 3

Green (30)

Heated Oxygen Sensor Bank 1 Sensors 1 and 2, Engine Control Module Fuel Pump Relay, EVAP Vent Solenoid

CONTROLS B+

Red (10)

Engine Control Module/Transmission Control Module

HORN

Red (10)

Horn Relay

FUEL PUMP

Blue (15)

Fuel Pump Relay

A/C

Red (10)

A/C Relay

IGN 0

Red (10)

Park/Neutral Position Switch/Park Lock/PRNDL/PCM

RR DEFOG

Natural (25)

Rear Defog Relay

BCM/ECM/CRUISE/ABS

Red (10)

Electronic Brake/Traction Control Module/Engine Control Module/Body Control Module/Cruise Brake Switch/Cruise Switch Fuse

CRUISE SW

Grey (2)

Horn/Cruise Switch

CONTROLS IGN 1

Red (10)

Transaxle Control Module/Cooling Fan Control Module

HAZARD

Red (10)

Hazard Switch

IGN 1

Red (10)

I/P Cluster/Coolant Level Switch/Electronic PRNDL Module/Sensing and Diagnostic Module

BRAKE

Blue (15)

Stop Lamp Switch

PARK LP

Red (10)

Headlamp/Turn Signal Switch

IGN

Blue (15)

Ignition Coils

BU/TURN

Red (10)

Park/Neutral Position Switch/Coolant Flow Pump/Hazard Switch

BCM/CLUSTER

Blue (15)

Body Control Module/I/P Cluster/Decklid Release/Dimmer Switch

Radio

Red (10)

Radio

CD/DLC

Blue (15)

Data Link Connector/Radio

Electrical Center Identification Views Left

Table 1: Minifuse Circuit Feeds
Table 2: Relay/Module Circuit Feeds
Table 3: Misc Devices

Instrument Panel Fuse Block Diagram


Object Number: 889805  Size: FP

Instrument Panel Fuse Block Charts

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

Minifuse Circuit Feeds

FUSE

COLOR

(AMP)

SYSTEM

RADIO

Red (10)

Radio

BTSI/BCM/MIRROR

Red (10)

BTSI Solenoid/Parklock Switch/Body Control Moudle/Power Mirror Switch

WIPER

Natural (25)

Wiper Relay/Wiper Switch/Front Wiper Motor

DEFOG LED

Red (10)

Rear Defog Switch

IGN 3

Red (10)

Rear Defog Relay/HVAC Control Head/Vehicle Speed Signal Conditioner Module/Traction Control/Passenger Heated Seat Switch/Fog Lamp/Driver Heated Seat Switch

HVAC SW

Yellow (20)

HVAC Control Head

DIMMER

Red (10)

Dimmer

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

Relay/Module Circuit Feeds

RELAY

MAXIMUM

LOAD

SYSTEM

WIPER

20 Amp

Wiper Switch/Wiper Motor

RR DEFOGGER

20 Amp

Rear Defog Switch/Rear Defog Grid

FUEL PUMP

20 Amp

Fuel Pump

HVAC BLOWER

35 Amp

HVAC Control Head/Blower Motor

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

Misc Devices

DEVICE

SYSTEM

RR Comp Diode

Liftgate/Decklid Ajar Switch

Fuse Puller

None

Electrical Center Identification Views Right

Table 1: Minifuse Circuit Feeds
Table 2: Relay/Module Circuit Feeds
Table 3: Misc Devices

Instrument Panel Fuse Block Diagram


Object Number: 889803  Size: FP

Instrument Panel Fuse Block Charts

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

Minifuse Circuit Feeds

FUSE

COLOR

(AMP)

SYSTEM

LOCKS

Blue (15)

Door Lock/Unlock Relays

PWR SEAT

Yellow (20)

Drivers Power Seat Switch

BODY

Red (10)

Heated Mirror Relay/Liftgate Key Cylinder Switch/Door Lock Switch

FOG LP

Red (10)

Fog Lamp Relay

PREM AMP

Blue (15)

Amplifier

HEATED SEATS

Yellow (20)

Heated Seat

WIPER/SUNROOF

Yellow (20)

Rear Wiper Relay/Rear Wiper Motor/Sunroof Assembly

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

Relay/Module Circuit Feeds

RELAY

MAXIMUM

LOAD

SYSTEM

DR UNLOCK

20 Amp

Door Lock Motor

UNLOCK

20 Amp

Door Lock Motor

LOCK

20 Amp

Door Lock Motor

MIRROR

20 Amp

Mirror Switch/Mirror

FOG LAMP

20 Amp

Fog Lamp Switch/Fog Lamps

RR WIPER

20 Amp

Rear Wiper Switch/Rear Wiper Motor

WINDOWS

35 Amp

Window Switch/Sunroof Assembly

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

Misc Devices

DEVICE

SYSTEM

Fuse Puller

None