GM Service Manual Online
For 1990-2009 cars only
Table 1: Fuse Block-I/P Application Table
Table 2: Fuse Block-I/P Wire Entry
Table 3: Fuse Block-Underhood Maxifuse® Application Table
Table 4: Fuse Block C1 Underhood
Table 5: Fuse Block C2 Underhood
Table 6: Fuse Block C3 Underhood
Table 7: Fuse Block C4 Underhood
Table 8: Fuse Block C5 Underhood
Table 9: Fuse Block C6 Underhood
Table 10: Relay Block-Domestic
Table 11: Relay Block-Export

Fuse Block-I/P Label


Object Number: 919140  Size: LF

Fuse Block-I/P Application Table

Fuse/Circuit Breaker

Rating

Description

BCM PRGRM

10A

Body Control Module (BCM)

ENHANCED EVAP/AWD

15A

Evaporative Emission (EVAP) Canister Vent Solenoid, Clutch Pump Check Valve

CIGAR/DLC/APO FRT

20A

Auxiliary Power Outlet-Front, Cigar Lighter, Data Link Connector (DLC)

CLUSTER/BATT

10A

Instrument Panel Cluster (IPC)

CRUISE

10A

Cruise Control Module (CCM), Cruise Control Release Switch, Cruise Control ON/OFF Switch

CTSY LAMP

10A

Body Control Module (BCM)

DRL

10A

Daytime Running Lamps (DRL) Control Module

HVAC/DIC/DRL/HEATED SEAT

10A

Air Temperature Actuator-Left, Air Temperature Actuator-Right, Daytime Running Lamps (DRL) Control Module, Driver Information Center (DIC), Mode Actuator, Rear Window Wiper/Washer and Multifunction Switch (Heated Seat Switch), Recirculation Actuator, Relay Block (Rear Window Defogger Relay)

ELC/TRAILER

25A

Auto Level Control (ALC) Air Compressor, Auto Level Control (ALC) Air Inflator Relay, Auto Level Control (ALC) Sensor

FRT HVAC HI BLWR

30A

Blower Motor Resistor Assembly

FRT WPR/WSHR

25A

Windshield Wiper Motor, Windshield Wiper/Washer Switch

HAZARD

15A

Turn Signal/Multifunction Switch

HEADLAMP

20A

Daytime Running Lamps (DRL) Control Module, Headlamp Dimmer Switch, Headlamp Switch

HTD MIRROR

10A

Outside Rearview Mirrors-Left, Right

HVAC/BLOWER

25A

HVAC Control Module

IGN1

10A

Body Control Module (BCM), Instrument Panel Cluster (IPC), Left Rear Side Door Actuator Control Module, Rear Object Sensor Control Module, Right Rear Side Door Actuator Control Module, Stop Lamp Switch

LH HEADLP HIGH

10A

Headlamp High Beam-Left

LH HEADLP LOW

10A

Headlamp Low Beam-Left

LH T/LP

10A

Tail Lamp-Left, Trailer Rear Wiring Harness

MALL/CLUSTER

10A

Body Control Module (BCM), Instrument Panel Cluster (IPC)

ON STAR

5A

Vehicle Interface Unit (VIU)

PASS KEY

10A

Theft Deterrent Control Module

PCM/ABS

10A

Electronic Brake Control Module (EBCM), Fuse Block-Underhood, Powertrain Control Module (PCM), Park/Neutral Position (PNP) Switch

PCM/CRANK

10A

Powertrain Control Module (PCM)

PCM/PASS KEY/CLUSTER

10A

Instrument Panel Cluster (IPC), Powertrain Control Module (PCM), Theft Deterrent Control Module, Instrument Panel Cluster (IPC), Powertrain Control Module (PCM)

PWR LOCK

20A

Body Control Module (BCM)

PWR MIRROR

10A

Outside Rearview Mirror Switch

PWR QTR VENT

10A

Auto Level Control (ALC) Air Compressor, Auto Level Control (ALC) Sensor, Rear Quarter Window Switch

PWR/HEATED SEAT PSD

30A

Driver Seat Assembly, Passenger Seat Assembly

PWR SLDG DR

30A

Left Rear Side Door Actuator Control Module, Right Rear Side Door Actuator Control Module

PWR WDO

30A

Window Switch-Driver, Window Switch-Front Passenger

RAP RELAY

10A

Relay Block (RAP Relay)

RH HEADLP HIGH

10A

Headlamp High Beam-Right

RH HEADLP LOW

10A

Headlamp Low Beam-Right

RR HVAC/TEMP CONT

25A

Air Temperature Actuator-Auxiliary, Blower Motor-Auxiliary, Blower Motor Relay-Auxiliary, HVAC Control Assembly-Auxiliary, Mode Actuator-Auxiliary

RR DEFOG/ HTD MIRROR

30A

Window Defogger Relay-Rear

RR FOG LP

10A

Fog Lamp Relay-Rear

RR PWR SCKT

20A

Auxiliary Power Outlet-Rear

RH T/LP

10A

Tail Lamp-Right, Trailer Rear Wiring Harness

RR WPR/WSHR

20A

Window Wiper Motor-Rear, Rear Window Wiper/Washer and Multifunction Switch

SIR

15A

Inflatable Restraint Sensing and Diagnostic Module (SDM)

STOP LAMP

15A

Stop Lamp Switch

SWC BACKLIGHT

2A

Steering Wheel Controls-Left, Right

T/SIG

10A

Turn Signal Switch and Backup Lamp Relay

Fuse Block-I/P (Bottom)


Object Number: 1202916  Size: LF

Fuse Block-I/P Wire Entry

Connector Part Information

    • 12160559
    • 101-Way F Mini (BLK)

Pin

Wire Color

Circuit No.

Function

A1

PNK

3

Ignition 1 Voltage

A2

PNK

439

Ignition 1 Voltage

A3-A5

--

--

Not Used

A6

PNK

1039

Ignition 1 Voltage

A7

--

--

Not Used

A8

PNK

1839

Ignition 1 Voltage

A9

PPL

293

Rear Defog Element Supply Voltage

A10

ORN

267

Heated Mirror/Rear Defog Relay Coil Supply Voltage

B1

LT GRN

11

Headlamp Dimmer Switch Signal

B2

LT GRN/BLK

311

Right Headlamp High Beam Supply Voltage

B3

--

--

Not Used

B4

DK GRN/WHT

711

Left Headlamp High Beam Supply Voltage

B5

RED

242

Battery Positive Voltage

B6

ORN

2940

Battery Positive Voltage

B7

--

--

Not Used

B8

ORN

2540

Battery Positive Voltage

B9

--

--

Not Used

B10

ORN

1540

Battery Positive Voltage

C1

TAN

12

Right Headlamp High Beam Supply Voltage

C2

TAN/WHT

312

Right Headlamp Low Beam Supply Voltage

C3

--

--

Not Used

C4

YEL

712

Left Headlamp Low Beam Supply Voltage

C5

RED

642

Battery Positive Voltage

C6

ORN

140

Battery Positive Voltage

C7

--

--

Not Used

C8

ORN

1840

Battery Positive Voltage

C9

--

--

Not Used

C10

ORN

3140

Battery Positive Voltage

D1

BRN

4

Accessory Voltage

D2

ORN/BLK

1445

BCM Program Enable Signal

D3

--

--

Not Used

D4

WHT

393

Rear Window Wiper Motor Control

D5

--

--

Not Used

D6

YEL

43

Accessory Voltage

YEL

43

Accessory Voltage

D7

--

--

Not Used

D8

YEL

243

Accessory Voltage

D9

YEL

5

Crank Voltage

D10

PPL

806

Crank Voltage

E1

ORN

300

Ignition 3 Voltage

E2

BRN

241

Ignition 3 Voltage

E3

--

--

Not Used

E4

BRN

641

Ignition 3 Voltage

E5

--

--

Not Used

E6

BRN

41

Ignition 3 Voltage

E7

DK BLU

75

RAP Relay Switch Supply Voltage

E8

YEL

743

Accessory Voltage

E9-E10

--

--

Not Used

F1-F2

--

--

Not Used

F3

PNK

3

Ignition 1 Voltage

F4

PNK

39

Ignition 1 Voltage

F5

--

--

Not Used

F6

YEL

1139

Ignition 1 Voltage

F7

--

--

Not Used

F8

PNK

539

Ignition 1 Voltage

PNK

539

Ignition 1 Voltage

F9

--

--

Not Used

F10

PNK

739

Ignition 1 Voltage

G1

RED

242

Battery Positive Voltage

G2

ORN

2440

Battery Positive Voltage

ORN

2440

Battery Positive Voltage

G3

--

--

Not Used

G4

ORN

240

Battery Positive Voltage

G5

--

--

Not Used

G6

ORN

1740

Battery Positive Voltage

G7

--

--

Not Used

G8

ORN

440

Battery Positive Voltage

G9

--

--

Not Used

G10

ORN

1140

Battery Positive Voltage

H1-H2

--

--

Not Used

H3

RED

742

Battery Positive Voltage

H4

ORN

1240

Battery Positive Voltage

H5

--

--

Not Used

H6

ORN

1040

Battery Positive Voltage

H7

--

--

Not Used

H8

ORN

1640

Battery Positive Voltage

H9

WHT

1390

Off/Run/Crank Voltage

H10

PNK

1020

Off/Run/Crank Voltage

J1-J4

--

--

Not Used

J5

BRN

9

Park Lamp Supply Voltage

J5

PPL

256

Park Lamp Supply Voltage (Export)

J6

PPL

709

Left Park Lamp Supply Voltage

J7

--

--

Not Used

J8

BRN/WHT

309

Right Park Lamp Supply Voltage

J9

GRY

8

Instrument Panel Lamp Supply Voltage-1

J10

BRN

1244

Instrument Panel Lamp Supply Voltage-2

K1

ORN

40

Battery Positive Voltage

K2

RED

642

Battery Positive Voltage

L1

ORN

340

Battery Positive Voltage

L2

RED

742

Battery Positive Voltage

M1

YEL

143

Accessory Voltage

M2

DK BLU

75

RAP Relay Switch Supply Voltage

N1

RED

742

Battery Positive Voltage

N2

ORN

1440

Battery Positive Voltage

P1

ORN

2340

Battery Positive Voltage

P2

--

--

Not Used

P3

RED

642

Battery Positive Voltage

Fuse Block-Underhood Label (Top)


Object Number: 612639  Size: MF

Fuse Block-Underhood Maxifuse® Application Table

Fuse

Rating

Description

1-COOL FAN 2

30A

Coolant Fans

3-HEADLAMPS

60A

Circuit Breakers:

    • FRT HVAC HI BLWR
    • HEADLAMP

Fuses:

    • HAZARD
    • PASS KEY
    • STOP LAMP

4-BATT MAIN 2

60A

Circuit Breaker:

  • PWR SEAT

Fuses:

    • ELC/TRAILER
    • PWR SLDG DR
    • RR DEFOG
    • RR FOG LP
    • RR DEFOG LP

5-IGN MAIN 1

40A

Ignition Switch to Fuses:

    • CAN VENT SOL
    • CRUISE
    • DRL
    • IGN 1
    • PCM/ABS
    • PCM/CRANK
    • PCM/PASS KEY/CLUSTER
    • SDM
    • T/SIG

6-COOL FAN 1

30A

Coolant Fans

7-BATT MAIN 1

60A

Fuses:

    • CIGAR/DLC/APO FRT
    • CLUSTER BATT
    • CTSY LAMP
    • ON STAR
    • PWR LOCK
    • PWR MIRROR
    • RAP RELAY
    • RR PWR SCKT

8-IGN MAIN 2

60A

Ignition Switch to Fuses:

    • BCM PRGRM
    • DRL/HVAC/TEMP/HTD ST
    • FRT/WPR/WSHR
    • HVAC BLOWER
    • MALL/CLUSTER
    • PWR OTR VENT
    • PWR WDO Circuit Breaker
    • RAP RELAY
    • RR WPR/WSHR
    • RR HVAC/TEMP CONT

18-INJ

10A

Fuel Injectors 1-6

21-IGNI-UH

15A

    • Air Injection Bleed Valve
    • Air Pump Relay
    • Evaporative Emissions (EVAP) Canister Purge Solenoid
    • Heated Oxygen Sensor #1, AND #2
    • Mass Air Flow (MAF) Sensor

25-ELEK IGN

15A

Ignition Control Module (ICM)

27-B/U LAMP

10A

Park/Neutral Position (PNP) Switch to Backup Lamps

28-A/C CLU

10A

A/C CLU Relay to A/C Compressor Clutch

29-RADIO

10A

    • Driver Information Center (DIC)
    • HVAC Control Module
    • Radio
    • Remote Control Door Lock Receiver (RCDLR)
    • Shock Sensor
    • Rearside Door Actuator Control Module-Left, Right
    • Theft LED

30-ALT SENSE

10A

Generator

31-TCC

10A

    • Automatic Transmission (Torque Converter Clutch and Shift Solenoids)
    • Stop Lamp Switch to Powertrain Control Module (PCM)

32-FUEL PUMP

15A

Fuel Pump Relay

33-ECM SENSE

10A

Powertrain Control Module (PCM)

35-FOG LP

10A

Fog Lamp Relay

36-HORN

15A

Horn Relay

37-PARK LP

20A

    • Daytime Running Lamps (DRL) Control Module
    • Headlamp Switch
    • Vehicle Interface Unit (VIU)

39-AIR

30A

Air Pump Relay

Fuse Block-Underhood (Top)


Object Number: 612638  Size: LF

Fuse Block C1 Underhood


Object Number: 280784  Size: CH

Connector Part Information

    • 15303513
    • 68-Way F Metri-pack 280 Series Flexlock (BLK)

Pin

Wire Color

Circuit No.

Function

A1-A4

--

--

Not Used

A5

DK GRN/WHT

465

Fuel Pump Relay Control

A6-A7

--

--

Not Used

A8

ORN

840

Battery Positive Voltage

A9

PNK

339

Ignition 1 Voltage

A10

WHT

504

Cooling Fan Low Reference

A11

--

--

Not Used

A12

PNK

639

Ignition 1 Voltage

B1-B2

--

--

Not Used

B3

PNK

339

Ignition 1 Voltage

B4

RED

490

Fuel Pump Relay Prime Supply Voltage

B5

BLK/WHT

451

Ground

B6

--

--

Not Used

B7

PNK

1339

Ignition 1 Voltage

B8

--

--

Not Used

B9

PNK

339

Ignition 1 Voltage

B10-B12

--

--

Not Used

C1 - C8

--

--

Not Used

C9

PNK

339

Ignition 1 Voltage

C10

DK BLU

473

High Speed Cooling Fan Relay Control

C11

BLK

1050

Ground

C12

--

--

Not Used

D1-D2

--

--

Not Used

D3

BRN

436

Air Injection Pump Control

D4-D8

--

--

Not Used

D9

PNK

339

Ignition 1 Voltage

D10

--

--

Not Used

D11

PNK

439

Ignition 1 Voltage

D12

TAN/BLK

231

Oil Pressure Switch Signal

TAN/BLK

231

Oil Pressure Switch Signal

E1

--

--

Not Used

E2

ORN

540

Battery Positive Voltage

E3

--

--

Not Used

E4

LT GRN

275

Park Neutral Position Switch Park Signal

E5

DK GRN

389

Vehicle Speed Signal

E6-E11

--

--

Not Used

E12

ORN

2740

Battery Positive Voltage

F1

--

--

Not Used

F2

GRY

532

Cooling Fan Motor Supply Voltage

F3

DK GRN

335

Low Speed Cooling Fan Relay Control

F4

LT BLU

1296

Axle Actuator - Control

F5

LT GRN

24

Backup Lamp Supply Voltage

F6

WHT

17

Stop Lamp Signal

F7

DK GRN/WHT

459

A/C Compressor Clutch Relay Control

F8

DK GRN

59

A/C Compressor Clutch Supply Voltage Feed

F9

PNK

239

Ignition 1 Voltage

F10

--

--

Not Used

F11

LT BLU

409

Cooling Fan Motor Supply Voltage

F12

--

--

Not Used

Fuse Block C2 Underhood


Object Number: 280786  Size: CH

Connector Part Information

    • 15303514
    • 68-Way F Metri-pack 280 Series Flexlock (GRY)

Pin

Wire Color

Circuit No.

Function

A1-A3

--

--

Not Used

A4

LT BLU

1296

Axle Actuator - Control

A5

LT GRN/BLK

24

Backup Lamp Supply Voltage

A6

WHT

17

Stop Lamp Switch Signal

A7-A12

--

--

Not Used

B1-B4

--

--

Not Used

B5

GRY

120

Fuel Pump Supply Voltage

B6-B12

--

--

Not Used

C1-C3

--

--

Not Used

C4

LT GRN

275

Park Neutral Position Switch Park Signal

C5

--

--

Not Used

C8

DK GRN

389

Vehicle Speed Signal

C9

--

--

Not Used

C10

PNK

439

Ignition 1 Voltage

C11-C12

--

--

Not Used

D1

ORN

1340

Battery Positive Voltage

ORN

1340

Battery Positive Voltage

D2-D3

--

--

Not Used

D4

LT GRN

275

Park Neutral Position Switch Park Signal

D5

PNK

1339

Ignition 1 Voltage

D8-D10

--

--

Not Used

D11

TAN/BLK

231

Oil Pressure Switch Signal -- Export

D12

--

--

Not Used

E1

ORN

1340

Battery Positive Voltage

E2-E4

--

--

Not Used

E5

YEL

317

Fog Lamp Relay Coil Supply Voltage

E6

--

--

Not Used

E7

BLK

28

Horn Relay Control

BLK

28

Horn Relay Control

E8

DK GRN

389

Vehicle Speed Signal

DK GRN

389

Vehicle Speed Signal

E9-E10

--

--

Not Used

E11

LT GRN/BLK

311

Right Headlamp High Beam Supply Voltage (Export)

YEL

18

Left Rear Stop/Turn Lamp Supply Voltage

E12

--

--

Not Used

F1-F3

--

--

Not Used

F4

DK GRN/WHT

711

High Beam Headlamp Feed (wT90)

F4

LT GRN

11

Headlamp High Beam Supply Voltage

F5

PPL

34

Fog Lamps Supply Voltage

PPL

34

Fog Lamps Supply Voltage

F6

--

--

Not Used

F7

ORN

640

Battery Positive Voltage

F8

YEL

712

Left Headlamp Low Beam Supply Voltage (Export)

F8

TAN

12

Headlamp Low Beam Supply Voltage

F9

LT BLU

14

Left Turn Signal Lamps Voltage

F10

DK BLU

15

Right Turn Signal Lamps Supply Voltage

F11

BRN

9

Park Lamp Supply Voltage

F12

TAN/WHT

312

Right Headlamp Low Beam Supply Voltage (Export)

F12

DK GRN

19

Right Rear Stop/Turn Lamp Supply Voltage

Fuse Block C3 Underhood


Object Number: 280787  Size: CH

Connector Part Information

    • 15303507
    • 68-Way F Metri-pack 280 Series Flexlock (LT GRY)

Pin

Wire Color

Circuit No.

Function

A1

ORN

3040

Battery Positive Voltage

A2-A3

--

--

Not Used

A4

LT GRN

11

Headlamp High Beam Supply Voltage

A4

DK GRN/WHT

711

Left Headlamp High Beam Supply Voltage (Export)

A5

PPL

34

Fog Lamps Supply Voltage

A6

--

--

Not Used

A7

DK GRN

29

Horn Control

A8

YEL

712

Left Headlamp Low Beam Supply Voltage (Export)

A8

TAN

12

Healamp Low Beam Supply Voltage

A9

LT BLU

14

Left Turn Signal Lamps Supply Voltage

LT BLU

14

Left Turn Signal Lamps Supply Voltage

A10

DK BLU

15

Right Turn Signal Lamps Supply Voltage

DK BLU

15

Right Turn Signal Lamps Supply Voltage

A11

BRN

9

Park Lamp Supply Voltage

A12

TAN/WHT

312

Right Headlamp Low Beam Supply Voltage

A12

DK GRN

19

Right Rear Stop/Turn Lamp Supply Voltage

B1-B3

--

--

Not Used

B4

LT GRN

11

Headlamp High Beam Supply Voltage

B5

PPL

34

Fog Lamps Supply Voltage

B6

--

--

Not Used

B7

DK GRN

29

Horn Control

B8

TAN

12

Headlamp Low Beam Supply Voltage

B9-B10

--

--

Not Used

B11

BRN

9

Park Lamp Supply Voltage

B12

--

--

Not Used

C1-C10

--

--

Not Used

C11

BRN

9

Park Lamp Supply Voltage

C12

--

--

Not Used

D1-D10

--

--

Not Used

D11

BRN

9

Park Lamp Supply Voltage

D12

--

--

Not Used

E1-E8

--

--

Not Used

E9

PNK

339

Ignition 1 Voltage

E10

--

--

Not Used

E11

LT GRN/BLK

311

Right Headlamp High Beam Supply Voltage (Export)

E11

YEL

18

Left Rear Stop/Turn Lamp Supply Voltage

E12

--

--

Not Used

F1-F12

--

--

Not Used

Fuse Block C4 Underhood


Object Number: 280788  Size: CH

Connector Part Information

    • 12146038
    • 2-Way F MaxiFuse (LT GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

242

Battery Positive Voltage

B

RED

142

Battery Positive Voltage

RED

142

Battery Positive Voltage

Fuse Block C5 Underhood


Object Number: 258677  Size: CH

Connector Part Information

    • 12146037
    • 2-Way F MaxiFuse (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

RED

42

Battery Positive Voltage

Fuse Block C6 Underhood


Object Number: 280790  Size: CH

Connector Part Information

    • 12160605
    • 2-Way F MaxiFuse (LT GRN)

Pin

Wire Color

Circuit No.

Function

A

RED

642

Battery Positive Voltage

B

RED

742

Battery Positive Voltage

Relay Block-Domestic


Object Number: 73243  Size: CH

Connector Part Information

    • 12160504
    • 36-Way F Metri-pack 280 Series Flex Lock (BLK)

Pin

Wire Color

Circuit No.

Function

A1-A9

--

--

Not Used

B1

DK BLU

75

RAP Relay Switch Supply Voltage

B2

--

--

Not Used

B3

ORN

2240

Battery Positive Voltage

B4

--

--

Not Used

B5

PPL

293

Rear Defog Element Supply Voltage

B6

--

--

Not Used

B7

BRN

241

Ignition 3 Voltage

B8-B9

--

--

Not Used

C1

BLK

707

RAP Relay Coil Supply Voltage

BLK

707

RAP Relay Coil Supply Voltage

C2

--

--

Not Used

C3

RED

142

Battery Positive Voltage

C4

--

--

Not Used

C5

WHT

193

Rear Defog Relay Control

C6

--

--

Not Used

C7

ORN

1040

Battery Positive Voltage

C8-C9

--

--

Not Used

D1-D9

--

--

Not Used

Relay Block-Export


Object Number: 73243  Size: CH

Connector Part Information

    • 12160504
    • 36-Way F Metri-pack 280 Series Flex Lock (BLK)

Pin

Wire Color

Circuit No.

Function

A1-A9

--

--

Not Used

B1

ORN

1640

Battery Positive Voltage

B2-B9

--

--

Not Used

C1

YEL

1870

Left Rear Fog Lamp Control

C2

--

--

Not Used

C3

RED

122

Rear Fog Lamps Supply Voltage

C4-C9

--

--

Not Used

D1-D9

--

--

Not Used