GM Service Manual Online
For 1990-2009 cars only
Table 1: Fuse Block--I/P Wire Entry
Table 2: Fuse Block--Underhood Wire Entry

Fuse Block -- I/P Identification


Object Number: 723040  Size: MF

Fuse/Circuit Breaker

Rating

Description

ABS

10 A

Antilock Brake Solenoids

AIR BG

15 A

Air Bag

AMPL

10 A (Chevrolet)

20 A (Pontiac)

Amplifier

APO

20A

Accessory Power Outlet

BCM

10 A

Body Control Module

BCM/CLU

10 A

Body Control Module/Cluster

CIG

20 A

Interior Lamps, Exterior Lamps

CLSTR

10 A

Instrument Panel Cluster, Electronic Brake Control Module

CRUISE

10 A

Cruise Control

ERLS

10 A

Brake Transaxle Shift Interlock (BTSI), Cruise Control, HVAC: Compressor Control, Multi-port Injection

EXT LP

20 A

Exterior Lamps, Interior Lamps Dimming

FOG

10 A

Daytime Running Lamps: Fog Lamps

F/P-INJ

15 A

Fuel Pump and Fuel Injectors

HORN

15 A

Horn

HVAC

10 A

Antilock Brake, Coolant Fan, HVAC: Compressor Control

IGN MDL

20 A

Ignition Module

LT HDLP

15 A

Left Headlamp

MIR/DLC

10 A

Power Mirror

O2 HTR

10 A

O2 Sensor Heater

PCM

10 A

Powertrain Control Module

PWR ACC

15 A

Power Door Locks

PWR WDO (Circuit Breaker)

25 A

Power Sunroof and Power Windows

RDO/INTLP

10 A

Radio, Interior Lamps

RFA BATT

15 A

Remote Keyless Entry System

RR DEFOG

30 A

Rear Defogger

RT HDLP

15 A

Right Headlamp

STOP/ HZD

20 A

Antilock Brakes, Cruise Control, Exterior Lamps

TURN-BU

10 A

Back Up Lamps, Exterior Lamps

WIPER

25 A

Wiper/Washer

Fuse Block--I/P Top View


Object Number: 847483  Size: LF

Fuse Block--I/P Bottom View


Object Number: 823102  Size: LF

Fuse Block--I/P Wire Entry

Connector Part Information

    • 15358661
    • 66-way F Fuse Block (BLK)

Pin

Wire Color

Circuit No.

Function

A1

--

3

Ignition 1 Voltage Bus

A2

PNK

539

Ignition 1 Voltage

PNK

539

Ignition 1 Voltage

A3

--

3

Ignition 1 Voltage Bus

A4

PNK

439

Ignition 1 Voltage

A5

--

3

Ignition 1 Voltage Bus

A6

PNK

39

Ignition 1 Voltage

PNK

39

Ignition 1 Voltage

A7

PNK

3

Ignition 1 Voltage

A8

PNK/WHT

639

Ignition 1 Voltage (Chevrolet)

PNK/WHT

639

Ignition 1 Voltage (Pontiac)

A9

--

3

Ignition 1 Voltage Bus

A10

PNK

239

Ignition 1 Voltage

B1

--

3

Ignition 1 Voltage Bus

B2

PNK

839

Ignition 1 Voltage

B3

--

3

Ignition 1 Voltage Bus

B4

YEL

1139

Ignition 1 Voltage

B5

PNK

3

Ignition 1 Voltage

B6

PNK

339

Ignition 1 Voltage

PNK

339

Ignition 1 Voltage

B7

--

3

Ignition 1 Voltage Bus

B8

PNK

739

Ignition 1 Voltage

B9

ORN

1640

Battery Positive Voltage

B10

RED

642

Battery Positive Voltage

C1

--

442

Battery Positive Voltage Bus

C2

ORN

1940

Battery Positive Voltage

C3

--

442

Battery Positive Voltage Bus

C4

ORN

1040

Battery Positive Voltage

ORN

1040

Battery Positive Voltage

C5

--

442

Battery Positive Voltage Bus

C6

ORN

740

Battery Positive Voltage

ORN

740

Battery Positive Voltage

C7

RED

442

Battery Positive Voltage

C8

ORN

340

Battery Positive Voltage

ORN

340

Battery Positive Voltage

C9

--

442

Battery Positive Voltage Bus

C10

ORN

640

Battery Positive Voltage

D1

--

442

Battery Positive Voltage Bus

D2

ORN

1440

Battery Positive Voltage

ORN

1440

Battery Positive Voltage

D3

--

442

Battery Positive Voltage Bus

D4

ORN

240

Battery Positive Voltage

D5

--

442

Battery Positive Voltage Bus

D6

ORN

40

Battery Positive Voltage

D7

RED

442

Battery Positive Voltage

D8

ORN/BLK

1140

Battery Positive Voltage

D9

--

442

Battery Positive Voltage Bus

D10

ORN

1540

Battery Positive Voltage

ORN

1540

Battery Positive Voltage

E1-E4

--

--

Not Used

E5

RED

642

Battery Positive Voltage

E6

ORN

140

Battery Positive Voltage

ORN

140

Battery Positive Voltage

E7-E10

--

--

Not Used

F1

RED

642

Battery Positive Voltage

F2

ORN

1340

Battery Positive Voltage

F3

--

642

Battery Positive Voltage Bus

F4

ORN

1240

Battery Positive Voltage

F5-F10

--

--

Not Used

G1

ORN

300

Ignition 3 Voltage

G2

BRN

241

Ignition 3 Voltage

G3

--

300

Ignition 3 Voltage Bus

G4

BRN

41

Ignition 3 Voltage (Pontiac)

BRN

41

Ignition 3 Voltage (Pontiac)

G4

BRN

41

Ignition 3 Voltage (Chevrolet)

G5-G10

--

--

Not Used

H1

BRN

4

Accessory Voltage

H2

YEL

143

Accessory Voltage

YEL

143

Accessory Voltage

H3

--

4

Accessory Voltage Bus

H4

YEL

43

Accessory Voltage

H5-H10

--

--

Not Used

J1-J2

--

--

Not Used

J3

RED

442

Battery Positive Voltage

J4

ORN/BLK

440

Battery Positive Voltage

J5-J10

--

--

Not Used

K1-K3

--

--

Not Used

L1

ORN

740

Battery Positive Voltage -- Domestic Only

L2

--

--

Not Used

L3

DK BLU

1201

DRL Headlamp Low Beam Supply Voltage

M1

GRY

589

DRL Resistor Supply Voltage

M2

--

--

Not Used

M3

LT GRN/BLK

592

DRL Relay Control -- Domestic Only

N1

BRN

141

Ignition 3 Voltage

BRN

141

Ignition 3 Voltage

N2

ORN

300

Ignition 3 Voltage

Fuse Block -- Underhood Identification


Object Number: 792524  Size: SF

Fuse

Rating

Description

MiniFuse

A/C

10 A

HVAC: Compressor Control

BLO

30 A

HVAC: Blower Control and HVAC: Compressor Control

CRNK

10 A

Starter Relay Control

PCM

10 A

Multiport Fuel Injection

MaxiFuse

ABS

50 A

Antilock Brakes and Power Distribution

BATT 1

40 A

Power Distribution

BATT 2

40 A

Power Distribution

COOLING FAN

30 A

Cooling Fan

IGN

50 A

Power Distribution, Starter and Charging System

PCM/HVAC

50 A

Blower Relay Control

Fuse Block--Underhood Top View


Object Number: 823233  Size: SF

Fuse Block--Underhood Bottom View


Object Number: 823234  Size: SF

Fuse Block--Underhood Wire Entry

Connector Part Information

    • 12177189
    • ELEC CTR U/H

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

BLK

150

Ground

A3

--

--

Not Used

A4

ORN

540

Battery Positive Voltage

A5-A9

--

--

Not Used

A10

DK GRN

335

Cooling Fan Relay Control

A11

--

--

Not Used

A12

RED

542

Battery Positive Voltage

A13

--

--

Not Used

A14

BLK

150

Ground

A15

--

--

Not Used

A16

RED

642

Battery Positive Voltage

A17

BLK/WHT

451

Ground

A18

--

--

Not Used

A19

GRY

120

Fuel Pump Supply Voltage

A20

DK GRN/WHT

459

A/C Compressor Clutch Relay Control

A21

--

--

Not Used

A22

ORN

440

Battery Positive Voltage

A23

--

--

Not Used

A24

--

1

Battery Positive Voltage Bus

A25

ORN

440

Battery Positive Voltage

A26

RED

1

Battery Positive Voltage

A27

ORN

480

Battery Positive Voltage

A28

--

1

Battery Positive Voltage Bus

A29

ORN

540

Battery Positive Voltage

A30

--

1

Battery Positive Voltage Bus

B1

--

--

Not Used

B2

PPL

65

Blower Motor Supply Voltage

B3

--

--

Not Used

B4

BRN

64

Blower Motor Relay Supply Voltage

B5-B9

--

--

Not Used

B10

LT BLU

409

Cooling Fan Motor Supply Voltage

B11

--

--

Not Used

B12

RED

542

Battery Positive Voltage

B13

--

--

Not Used

B14

PPL/WHT

6

Starter Solenoid Crank Voltage

B15

--

--

Not Used

B16

PPL/WHT

1035

Starter Relay Coil Supply Voltage (MX0)

PPL

806

Crank Voltage (MM5)

B17

PNK

839

Ignition 1 Voltage

B18

--

--

Not Used

B19

DK GRN/WHT

465

Fuel Pump Relay Control

B20

DK GRN

59

A/C Compressor Clutch Supply Voltage

B21

--

--

Not Used

B22

PNK

439

Ignition 1 Voltage

B23-B24

--

--

Not Used

B25

PPL/WHT

1035

Starter Relay Coil Supply Voltage (MXO)

B25

PPL

806

Crank Voltage (MM5)

B26

YEL

5

Crank Voltage (MX0)

B26

PPL/WHT

1035

Starter Relay Coil Supply Voltage (MM5)

B27-B30

--

--

Not Used

C1-C30

--

--

Not Used

D1

RED

1

Battery Positive Voltage

D2

RED

542

Battery Positive Voltage

RED

542

Battery Positive Voltage

D3

RED

342

Battery Positive Voltage

D4

RED

642

Battery Positive Voltage

RED

642

Battery Positive Voltage

D5

RED

442

Battery Positive Voltage

D6

RED

242

Battery Positive Voltage

E1

--

1

Battery Positive Voltage Bus

E2

--

1

Battery Positive Voltage Bus

E3

--

1

Battery Positive Voltage Bus

E4

--

1

Battery Positive Voltage Bus

E5

--

1

Battery Positive Voltage Bus

E6

--

1

Battery Positive Voltage Bus

F1

--

1

Battery Positive Voltage Bus