GM Service Manual Online
For 1990-2009 cars only
Table 1: Fuse Block - Underhood -- Application Table
Table 2: Fuse Block-Underhood, Connector C1
Table 3: Fuse Block -- Underhood, Connector C2
Table 4: Fuse Block-Underhood, Connector C3
Table 5: Fuse Block-Underhood, Connector C4
Table 6: Fuse Block-Underhood, Connector C5
Table 7: Fuse Block-Underhood, Connector C6
Table 8: Fuse Block - I/P -- Application Table
Table 9: Fuse Block - I/P, Wire Entry Pinout

Fuse Block - Underhood -- Label


Object Number: 589185  Size: LF

Fuse Block - Underhood -- Application Table

No.

Fuse/Circuit Breaker

Rating

Description

1

COOL FAN 2 Fuse

30A

COOL FAN Relay, and COOL FAN 2 Relay

2

--

--

Not Used

3

HEADLAMPS Fuse

60A

HVAC HI, PWR MIR, HAZARD, RAP, and PASS-KEY Fuses, and HEADLAMP Circuit Breaker

4

BATT MAIN 2 Fuse

60A

R DEFOG, H SEAT/LUM, PWR LOCK, and RADIO AMP Fuses, and SEAT Circuit Breaker

5

IGN MAIN 1 Fuse

40A

Ignition Switch, Park/Neutral Position (PNP) Switch, BTSI, DRL, CANISTER VENT, PWR DROP, TURN, SIR, IP-IGN, CRUISE, and ECM Fuses

6

COOL FAN 1 Fuse

30A

COOL FAN 1 Relay

7

BATT MAIN 1 Fuse

60A

ONSTAR, STOP LAMP, INT LAMP, and CIG LTR Fuses

8

IGN MAIN 2 Fuse

60A

Ignition Switch, Retained Accessory Power (RAP) Relay, RADIO, SUNROOF, STR WHL CTRL, WIPER, MALL, MALL PGM, DIC/HVAC, HVAC CTRL Fuses and PWR WDO Circuit Breaker

9

COOL FAN Relay

--

Cooling Fan - Right 3.1L, Cooling Fan - Left 3.8L (During Low Fan Speed Operation)

10

COOL FAN 2 Relay

--

Cooling Fan - Right 3.1L, Cooling Fan - Left 3.8L (During High Fan Speed Operation)

11

IGN MAIN Relay

--

INJ, IGN 1-UH, ELEK IGN, TCC, and A/C Clutch/ABS IGN Fuses

12

COOL FAN 1 Relay

--

Cooling Fan - Left 3.1L, Cooling Fan - Right 3.8L

13

A/C CLU Relay

--

A/C Compressor Clutch, and A/C CLU Diode

14

FUEL PUMP Relay

--

Fuel Pump and Sender Assembly

15

--

--

Not Used

16

HORN Relay

--

Horn Assembly

17

FOG LAMP Relay

--

Fog Lamp - LF, Fog Lamp - RF

18

INJ Fuse

10A

Fuel Injectors (1 - 6)

19

Spare Fuse

15A

Not Used

20

--

--

Not Used

21

IGN1 - UH Fuse

15A

Secondary Air Injection (AIR) Pump Relay, Supercharger Boost Control Solenoid, Heated Oxygen sensor (HO2S) Sensor 1, Heated Oxygen Sensor (HO2S) Sensor 2, Evaporative Emissions (EVAP) Canister Purge Solenoid, and Mass Air Flow (MAF) Sensor

22

Spare Fuse

30A

Not Used

23

Spare Fuse

10A

Not Used

24

Spare Fuse

25A

Not Used

25

ELEK IGN Fuse

15A

Ignition Control Module (ICM)

26

Spare Fuse

20A

Not Used

27

B/U LAMP Fuse

10A

Park Neutral Position (PNP) Switch, Body Control Module (BCM), Rear Compartment Lid Release Relay, and Rear Compartment Lid Release Switch

28

A/C CLU/ABS IGN Fuse

10A

A/C Clutch Relay, and Electronic Brake Control Module (EBCM)

29

HVAC/RKE BATT Fuse

10A

HVAC Control Module, Remote Control Door Lock Receiver (RCDLR), Theft LED, and Driver Information Center (U40)

30

ALT SENSE Fuse

10A

Generator

31

TCC Fuse

10A

Stop Lamp Switch, 1-2 Shift Solenoid (1-2 SS) Valve, 2-3 Shift Solenoid (2-3 SS) Valve, Torque Converter Clutch (TCC) Solenoid Valve

32

FUEL PUMP Fuse

15A

FUEL PUMP Relay

33

ECM SENSE Fuse

10A

Powertrain Control Module (PCM)

34

--

--

Not Used

35

FOG LP Fuse

10A

FOG LAMP Relay

36

HORN Fuse

15A

Horn Relay

37

PARK LP Fuse

20A

Headlamp Switch, Body Control Module (BCM), and Vehicle Interface Unit (VIU)

38

--

--

Not Used

39

AIR Fuse

30A

Secondary Air Injection (AIR) Pump Relay

Fuse Block -- Underhood -- Top View


Object Number: 715149  Size: LF

Fuse Block -- Underhood -- Bottom View


Object Number: 690133  Size: LF

Fuse Block-Underhood, Connector C1


Object Number: 280784  Size: CH

Connector Part Information

    • 15303513
    • 68-Way F Metri-Pack 280 Series Flex Lock (BLK)

Pin

Wire Color

Circuit No.

Function

A1

DK GRN

35

Coolant Temperature Indicator Control

A2-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

PNK

339

Ignition 1 Voltage

A10

GRY

532

Cooling Fan Motor Ground

A11

--

--

Not Used

A12

PNK

639

Ignition 1 Voltage

PNK

639

Ignition 1 Voltage (L36, L67)

B1-B2

--

--

Not Used

B3

PNK

339

Ignition 1 Voltage (L67)

B4

--

--

Not Used

B5

BLK/WHT

451

Ground

B6

--

--

Not Used

B7

PNK

1339

Ignition 1 Voltage

B8

--

--

Not Used

B9

PNK

339

Ignition 1 Voltage

PNK

339

Ignition 1 Voltage

B10-B11

--

--

Not Used

B12

PNK

639

Ignition 1 Voltage (L36, L67)

PNK

639

Ignition 1 Voltage (L36, L67)

C1

BRN/WHT

419

MIL Control

C2-C3

--

--

Not Used

C4

BLK/WHT

451

Ground

C5-C9

--

--

Not Used

C10

DK BLU

473

High Speed Cooling Fan Relay Control

C11

BLK

1050

Ground

C12

PNK

639

Ignition 1 Voltage (L36, L67)

PNK

639

Ignition 1 Voltage (L36, L67)

D1

--

--

Not Used

D2

ORN/BLK

434

Neutral Safety Switch Signal

D3

BRN

436

Air Pump Relay Control (LG8)

D4

--

--

Not Used

D5

BLK/WHT

451

Ground

D8-D9

--

--

Not Used

D10

YEL

772

Transmission Range Switch Signal B

YEL

772

Transmission Range Switch Signal B

D11

PNK

439

Ignition 1 Voltage

D12

TAN

31

Oil Pressure Indicator Control

E1

--

--

Not Used

E2

ORN

540

Battery Positive Voltage

E3

PPL

420

TCC Brake Switch Signal

E4

LT GRN

275

Park Neutral Position Switch Park Signal

E5

DK GRN

389

Vehicle Speed Signal

DK GRN

389

Vehicle Speed Signal

E6

GRY

773

Transmission Range Switch Signal C

GRY

773

Transmission Range Switch Signal C

E7

--

--

Not Used

E8

PNK

1239

Ignition 1 Voltage (JL9)

E9-E11

--

--

Not Used

E12

ORN

2740

Battery Positive Voltage

F1

BRN/WHT

1173

Oil Level Indicator Control

F2

WHT

504

Cooling Fan Motor Supply Voltage

F3

DK GRN

335

Low Speed Cooling Fan Relay Control

F4

WHT

776

Transmission Range Switch Signal P

WHT

776

Transmission Range Switch Signal P

F5

BRN

25

Charge Indicator Control

F6

WHT

121

Engine Speed Signal

WHT

121

Engine Speed Signal

F7

DK GRN/WHT

459

A/C Clutch Relay Control

F8

DK GRN

59

A/C Compressor Clutch Supply Voltage

F9

PNK

239

Ignition 1 Voltage

F10

DK GRN

135

Coolant Temperature Sensor Signal

F11

LT BLU

409

Cooling Fan Motor Supply Voltage

F12

BLK/WHT

771

Transmission Range Switch Signal A

BLK/WHT

771

Transmission Range Switch Signal A

Fuse Block -- Underhood, Connector C2


Object Number: 707460  Size: CH

Connector Part Information

    • 15328719
    • 68-Way F Metri-Pack 280 Series Flex Lock (MD GRY)

Pin

Wire Color

Circuit No.

Function

A1

BRN/WHT

1173

Low Oil Level Indicator Control

A2-A3

--

--

Not Used

A4

WHT

776

Parity Input Transmission Range Switch Signal P

A5

BRN

25

Charge Indicator Control

BRN

25

Charge Indicator Control (U40)

A6

WHT

121

Engine Speed Signal

A7-A9

--

--

Not Used

A10

DK GRN

135

ECT Sensor Gage Signal

A11

--

--

Not Used

A12

BLK/WHT

771

Transmission Range Switch Signal A

B1-B2

--

--

Not Used

B3

ORN/BLK

434

Neutral Safety Switch Signal

B4

LT GRN

275

Park Neutral Position Switch Park Signal

LT GRN

275

Park Neutral Position Switch Park Signal

B5

GRY

120

Fuel Pump Supply Voltage

B6

GRY

773

Transmission Range Switch Signal C

B7-B9

--

--

Not Used

B10

YEL

772

Transmission Range Switch Signal B

B11-B12

--

--

Not Used

C1-C2

--

--

Not Used

C3

PPL

420

TCC Brake Switch Signal

C4

LT GRN

275

Park Neutral Position Switch Park Signal

LT GRN

275

Park Neutral Position Switch Park Signal

C5

--

--

Not Used

C8

DK GRN

389

Vehicle Speed Signal

DK GRN

389

Vehicle Speed Signal

C9

--

--

Not Used

C10

PNK

439

Ignition 1 Voltage

C11-C12

--

--

Not Used

D1-D2

--

--

Not Used

D3

DK GRN

35

Coolant Temperature Indicator Control

DK GRN

35

Coolant Temperature Indicator Control (U40)

D4

--

--

Not Used

D5

PNK

1339

Ignition 1 Voltage

D8-D10

--

--

Not Used

D11

TAN

31

Oil Pressure Indicator Control

TAN

31

Oil Pressure Indicator Control (U40)

D12

--

--

Not Used

E1

ORN

1340

Battery Positive Voltage

E2

--

--

Not Used

E3

BRN/WHT

419

MIL Control

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 (w/o UE1)

E8

DK GRN

389

Vehicle Speed Signal (U40)

DK GRN

389

Vehicle Speed Signal (U40)

E9-E10

--

--

Not Used

E11

BLK/WHT

174

Low Washer Fluid Indicator Supply Voltage

E12

--

--

Not Used

F1-F3

--

--

Not Used

F4

LT GRN

11

Headlamp High Beam Supply Voltage

F5-F6

--

--

Not Used

F7

ORN

640

Battery Positive Voltage

F8

TAN

12

Headlamp Low Beam Supply Voltage

F9

LT BLU

14

Left Turn Signal Lamps Supply Voltage

F10

DK BLU

15

Right Turn Signal Lamps Supply Voltage

F11

BRN

9

Park Lamp Supply Voltage

F12

RED

228

Windshield Washer Pump Control

Fuse Block-Underhood, Connector C3


Object Number: 280787  Size: CH

Connector Part Information

    • 15303512
    • 68-Way F Metri-Pack 280 Series Flex Lock (LT GRY)

Pin

Wire Color

Circuit No.

Function

A1

ORN

3040

Battery Positive Voltage (NC1)

A2-A3

--

--

Not Used

A4

LT GRN

11

Headlamp High Beam Supply Voltage

A5

PPL

34

Front Fog Lamps Supply Voltage

A6

--

--

Not Used

A7

DK GRN

29

Horn Control

A8

TAN

12

Headlamp Low Beam Supply Voltage

A9

LT BLU

14

Left Turn Signal Lamps Supply Voltage

A10

DK BLU

15

Right Turn Signal Lamps Supply Voltage

A11

BRN

9

Park Lamp Supply Voltage

A12

RED

228

Windshield Washer Pump Control

B1-B3

--

--

Not Used

B4

LT GRN

11

Headlamp High Beam Supply Voltage

B5

PPL

34

Front Fog Lamps Supply Voltage

B6-B7

--

--

Not Used

B8

TAN

12

Headlamp Low Beam Supply Voltage

B9

LT BLU/BLK

14

Left Turn Signal Lamps Supply Voltage

B10

DK BLU/WHT

15

Right Turn Signal Lamps Supply Voltage

B11

BRN/WHT

9

Park Lamp Supply Voltage

B12

--

--

Not Used

C1-C8

--

--

Not Used

C9

PNK

339

Ignition 1 Voltage (NC1)

C10

--

--

Not Used

C11

BRN

9

Park Lamp Supply Voltage

C12

--

--

Not Used

D1-D8

--

--

Not Used

D9

BRN

436

AIR Pump Relay Control (NC1)

D10

--

--

Not Used

D11

BRN/WHT

9

Park Lamp Supply Voltage

D12

--

--

Not Used

E1-E8

--

--

Not Used

E9

PNK

339

Ignition 1 Voltage (NC1)

E10

--

--

Not Used

E11

BLK/WHT

174

Low Washer Fluid Indicator Supply Voltage

E12

--

--

Not Used

F1-F8

--

--

Not Used

F9

PNK

339

Ignition 1 Voltage (NC1)

F10-F12

--

--

Not Used

Fuse Block-Underhood, Connector C4


Object Number: 280788  Size: CH

Connector Part Information

    • 12146038
    • 2-Way F MaxiFuse (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-Underhood, Connector C5


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-Underhood, Connector C6


Object Number: 280790  Size: CH

Connector Part Information

    • 12160605
    • 2-Way F MaxiFuse (GRN)

Pin

Wire Color

Circuit No.

Function

A

RED

642

Battery Positive Voltage

RED

642

Battery Positive Voltage

B

RED

742

Battery Positive Voltage

RED

742

Battery Positive Voltage

Fuse Block - I/P -- Label


Object Number: 801990  Size: LF

Fuse Block - I/P -- Application Table

Fuse/Circuit Breaker

Rating

Description

BTSI Fuse

10A

Instrument Panel Cluster (IPC), Stop Lamp Switch, A/T Shift Lock Control Solenoid

CANISTER VENT Fuse

10A

Evaporative Emission (EVAP) Canister Vent Solenoid

CIG LTR Fuse

15A

Data Link Connector (DLC), Accessory Power Outlet - Console, Cigar Lighter, Auxiliary Power Drop Connector

CRUISE Fuse

10A

Cruise Control Module (CCM), Cruise Control Release Switch, Multifunction Turn Signal Lever

DIC/HVAC Fuse

10A

Heated Seat Switch - Driver, Driver Information Center (DIC) (U40), Daytime Running Lamps (DRL) Control Module, Rear Window Defogger Relay, Air Temperature Actuator - Left, Air Temperature Actuator - Right, HVAC Control Module

DRL Fuse

10A

Daytime Running Lamps (DRL) Control Module

ECM Fuse

10A

IGN Main Relay Coil, Powertrain Control Module (PCM), Theft Deterrent Control Module

HSEAT/LUM Fuse

15A

Heated Seat Control Module - Driver, Seat Lumbar Switch - Driver,

HAZARD Fuse

15A

Multifunction Turn Signal Lever

HEADLAMP Circuit Breaker

20A

Headlamp Switch, Daytime Running Lamps (DRL) Control Module

HVAC CTRL Fuse

20A

HVAC Control Module

HVAC HI Fuse

30A

Blower Motor Resister Assembly

INT LAMP Fuse

10A

Body Control Module (BCM)

I/P-IGN Fuse

10A

Instrument Panel Cluster (IPC), Body Control Module (BCM), Driver Information Center (DIC), Head Up Display (HUD) Switch

MALL Fuse

10A

Body Control Module (BCM)

MALL PGM Fuse

10A

Body Control Module (BCM)

ON STAR Fuse

15A

Vehicle Interface Unit (VIU)

PASS KEY III Fuse

10A

Theft Deterrent Control Module

PWR DROP Fuse

10A

Auxiliary Power Drop Connector, Vehicle Interface Unit (VIU)

PWR LOCK Fuse

15A

Body Control Module (BCM)

PWR MIR Fuse

10A

Outside Rearview Mirror Switch

PWR WDO Circuit Breaker

25A

Window Switch - Driver

R DEFOG Fuse

30A

Rear Window Defogger Relay

RADIO Fuse

10A

Radio, Vehicle Interface Unit (VIU)

RADIO AMP Fuse

20A

Audio Amplifier, Radio

RAP Fuse

10A

Retained Accessory Power (RAP) Relay

SEAT Circuit Breaker

20A

Seat Adjuster Switch - Driver, Seat Lumbar Vertical Adjuster Relay, Lumbar Horizontal Adjuster Relay

SIR Fuse

15A

Inflatable Restraint Sensing and Diagnostic Module (SDM)

STOP LAMP Fuse

15A

Stop Lamp Switch

STR WHL CTRL Fuse

2A

Inflatable Restraint Steering Wheel Module Coil, Steering Wheel Controls - Right

STR WHL ILUM Fuse

2A

Steering Wheel Controls Switch - Left, Steering Wheel Controls Switch - Right

SUNROOF Fuse

20A

Inside Rearview Mirror, Sunroof Module

TURN Fuse

10A

Multifunction Turn Signal Lever

WIPER Fuse

25A

Windshield Wiper Motor, Multifunction Turn Signal Lever

Fuse Block - I/P (Top View)


Object Number: 715157  Size: LF

Fuse Block - I/P (Bottom View)


Object Number: 589179  Size: LF

Fuse Block - I/P, Wire Entry Pinout

Pin

Wire Color

Circuit No.

Function

A1

PNK

3

Ignition 1 Voltage

A2

PNK

1239

Ignition 1 Voltage

A3

--

--

Not Used

A4

PNK

1639

Ignition 1 Voltage

A5

--

--

Not Used

A6

PNK

239

Ignition 1 Voltage

A7 - A10

--

--

Not Used

B1

ORN

300

Ignition 3 Voltage

B2

BRN

541

Ignition 3 Voltage

B3

--

--

Not Used

B4

BRN

41

Ignition 3 Voltage

B5 - B10

--

--

Not Used

C1

WHT

1390

Off/Run/Crank Voltage

C2

PNK

1020

Ignition 0 Voltage

C3 - C10

--

--

Not Used

D1

PNK

3

Ignition 1 Voltage

D2

PNK

539

Ignition 1 Voltage

D3

--

--

Not Used

D4

YEL

1139

Ignition 1 Voltage

D5

--

--

Not Used

D6

PNK

39

Ignition 1 Voltage

D7

--

--

Not Used

D8

PNK

739

Ignition 1 Voltage

D9

--

--

Not Used

D10

PNK

439

Ignition 1 Voltage

PNK

439

Ignition 1 Voltage

E1

RED

242

Battery Positive Voltage

E2 - E3

--

--

Not Used

E4

ORN

2140

Battery Positive Voltage (UE1)

E5

--

--

Not Used

E6

ORN

140

Battery Positive Voltage

E7

--

--

Not Used

E8

ORN

240

Battery Positive Voltage

E9

--

--

Not Used

E10

ORN

440

Battery Positive Voltage

F1

RED

642

Battery Positive Voltage

F2

ORN

40

Battery Positive Voltage

F3

--

--

Not Used

F4

ORN

1140

Battery Positive Voltage

F5

--

--

Not Used

F6

ORN

1840

Battery Positive Voltage

F7

--

--

Not Used

F8

ORN

540

Battery Positive Voltage

F9

--

--

Not Used

F10

ORN

3140

Battery Positive Voltage

G1

RED

742

Battery Positive Voltage

G2

ORN

1040

Battery Positive Voltage

G3

--

--

Not Used

G4

ORN

2040

Battery Positive Voltage

G5

--

--

Not Used

G6

ORN

1540

Battery Positive Voltage

G7

--

--

Not Used

G8

ORN

740

Battery Positive Voltage

G10

--

--

Not Used

H1

DK BLU

75

RAP Relay Switch Supply Voltage

H2

YEL

43

Accessory Voltage

YEL

43

Accessory Voltage (UE1)

H3

--

--

Not Used

H4

YEL

343

Accessory Voltage

H5

--

--

Not Used

H6

YEL

843

Accessory Voltage

H7-H8

--

--

Not Used

H9

GRY

8

Instrument Panel Lamp Supply Voltage

H10

GRY/BLK

1458

Instrument Panel Lamp Supply Voltage

J1

BRN

4

Accessory Voltage

J2

YEL

243

Accessory Voltage

J3

--

--

Not Used

J4

YEL

443

Accessory Voltage

J5

--

--

Not Used

J6

ORN/BLK

1445

BCM Program Enable Signal

J7 - J10

--

--

Not Used

K1 - K2

--

--

Not Used

L1

DK BLU

75

RAP Relay Switch Supply Voltage

L2

YEL

143

Accessory Voltage

M1 - M2

--

--

Not Used

N1

RED

742

Battery Positive Voltage

N2

ORN

340

Battery Positive Voltage

P1

RED

642

Battery Positive Voltage

P2

--

--

Not Used

P3

ORN

2440

Battery Positive Voltage