GM Service Manual Online
For 1990-2009 cars only
Table 1: Fuse Block - Underhood Label Usage
Table 2: Fuse Block - Underhood C1 (0.8L)
Table 3: Fuse Block - Underhood C1 (1.0L)
Table 4: Fuse Block - Underhood C2
Table 5: Fuse Block - Underhood C3
Table 6: Fuse Block - Underhood C4
Table 7: Fuse Block - I/P Label Usage
Table 8: Ignition Switch

Fuse Block - Underhood Label


Object Number: 1658217  Size: MF

Fuse Block - Underhood Label Usage

No.

Device

Rating

Description

EF1

FAN HI Fuse

30A

Cooling Fan

EF2

ABS Fuse

50A

EBCM

EF3

--

--

Not Used

EF4

MAIN Fuse

30A

Battery Voltage

EF5

IGN 2 Fuse

30A

Ignition Switch

EF6

IGN 1Fuse

30A

Ignition Switch

EF7

A/C COMP Fuse

10A

A/C Compressor

EF8

FAN LOW Fuse

20A

Cooling Fan Low Fuse

EF9

FRONT FOG Fuse

10A

Fog Lamp Switch

EF10

HORN Fuse

10A

Horn Switch

EF11

ILL RH Fuse

10A

Illumination

EF12

ILL RH Fuse

10A

Illumination

EF13

SPARE Fuse

10A

SPARE

EF14

SPARE Fuse

15A

SPARE

EF15

SPARE Fuse

20A

SPARE

EF16

Not Used

--

Not Used

EF17

HI/LOW LH Fuse

10A

RH Headlamp

EF18

HI/LOW RH Fuse

15A

LH Headlamp

EF19

EMS Fuse

15A

Engine Management System, ECM

EF20

SPARE Fuse

30A

Spare

EF21

H/L HI Fuse

15A

Headlamp

EF22

FUEL PUMP Fuse

15A

Fuel Pump

EF23

HAZARD Fuse

15A

Hazard Lamp

EF24

RR DEFOG Fuse

15A

Rear Defogger

EF25

ECU Fuse

10A

Engine Control Module

Fuse Block - Underhood C1 (0.8L)


Object Number: 1661096  Size: CH

Connector Part Information

    • AMP 1-936321-2
    • ?

Pin

Wire Color

Circuit Number

Function

1

OG/BK

1733

Battery Positive Voltage

2

OG/BK

1733

Battery Positive Voltage

3

OG/BK

1733

Battery Positive Voltage

4

--

--

Not Used

5

--

--

Not Used

6

OG/BK

1733

Battery Positive Voltage

7

BN

833

?

8

OG/BK

1029

Main Relay Control

9

D-GN/WH

459

A/C Conpressor Relay Control

10

D-GN

335

Cooling Fan Low Control

11

OG/BK

1733

Battery Positive Voltage

12

GY/BK

720

Sensor Ground

13

GY/BK

720

Sensor Ground

14

--

--

Not Used

15

--

--

Not Used

16

D-GN

872

?

17

OG/BK

1733

Battery Positive Voltage

18

PK/BK

632

Low Reference

19

RD/BK

1240

Battery Voltage

20

PK/RD

339

Ignition Voltage

21

PK/RD

339

Ignition Voltage

22

OG/BK

495

Power Steering Signal

23

D-GN/WH

465

Fuel Relay Control

24

--

--

Not Used

25

PK/BK

632

Low Reference

26

--

--

Not Used

27

--

--

Not Used

28

--

--

Not Used

29

BN/WH

312

Headlamp Signal

30

--

--

Not Used

31

--

--

Not Used

32

D-BU

473

Cooling Fan High Control

Fuse Block - Underhood C1 (1.0L)


Object Number: 1661096  Size: CH

Connector Part Information

    • AMP 1-936321-2
    • ?

Pin

Wire Color

Circuit Number

Function

1

OG/BK

1733

Battery Positive Voltage

2

--

--

Not Used

3

OG/BK

1733

Battery Positive Voltage

4

--

--

Not Used

5

PK/BK

632

Low Reference

6

OG/BK

1733

Battery Positive Voltage

7

--

--

Not Used

8

OG/BK

1029

Main Relay Control

9

D-GN/WH

459

A/C compressor Relay Control

10

D-GN

335

Cooling Fan Low Control

11

OG/BK

1733

Battery Positive Voltage

12

GY/BK

720

Sensor Ground

13

GY/BK

720

Sensor Ground

14

--

--

Not Used

15

--

--

Not Used

16

WH

1909

Rough Road Signal

17

OG/BK

1733

Battery Positive Voltage

18

GY

2702

5 Volt Reference

19

RD/BK

1240

Camshaft Position Sensor Signal

20

PK/RD

339

Ignition Voltage

21

PK/RD

339

Ignition Voltage

22

OG/BK

495

Power Steering Pressure Sensor

23

D-GN/WH

465

Fuel Relay Control

24

--

--

Not Used

25

GY

2702

5 Volt Reference

26

PK/BK

632

Low Reference

27

PK/BK

632

Low Reference

28

--

--

Not Used

29

BN/WH

312

Headlamp Relay Output

30

--

--

Not Used

31

--

--

Not Used

32

D-BU

473

Cooling Fan High Control

Fuse Block - Underhood C2


Object Number: 1661099  Size: CH

Connector Part Information

    • AMP 0-936321-3
    • ?

Pin

Wire Color

Circuit Number

Function

1

D-GN

189

Headlamp Leveling Motor Feed (w/Headlamp Leveling)

2

L-GN/BK

875

ABS Warning Indicator (w/Euro Lighting System)

3

BN/WH

799

ABS Serial Data

4

RD/BK

142

Battery Voltage

5

YE

712

Headlamp Low Beam Voltage (w/Headlamp Leveling)

YE

712

Headlamp Low Beam Voltage (w/Daytime Running Lights)

6

RD/WH

640

Defogger Voltage

7

RD/WH

42

Battery Voltage

8

BN/WH

309

Illumination Voltage

9

BN/WH

309

Illumination Voltage (w/o Daytime Running Lights)

BN/WH

309

Illumination Voltage (w/o Daytime Running Lights)

BN/WH

309

Illumination Voltage (w/Daytime Running Lights)

10

--

--

Not Used

11

D-BU

15

Right Turn Signal Lamp Voltage

12

L-BU

14

Left Turn Signal Lamp Voltage

13

PU

709

LH Park Lamp Voltage

14

RD/WH

1040

Battery Voltage

15

BN/WH

312

Headlamp Signal (w/Rear Fog Lamp)

16

YE

317

Fog Lamp Voltage

YE

317

Fog Lamp Voltage (LHD w/Rear Fog Lamp)

17

WH

1080

Park Lamp Control Signal

18

D-GN

392

Rear Washer Pump Voltage

19

L-BU/D-BU

20

Stop Lamp Voltage

20

BN

12

Headlamp Low Beam Relay Control

21

YE

804

Door Switch Signal

22

GY/BK

745

Driver Door Switch Signal

GY/BK

745

Driver Door Switch Signal (w/Battery Saver)

23

D-GN

29

Horn Control

24

BN

28

Horn Switch Siganl (w/Air Bag)

25

BN/WH

33

Brake Warning Indicator

26

RD/BK

242

Battery Voltage

27

OG

228

WIndshield Washer Pump Voltage

28

--

--

Not Used

29

GY/BK

120

Fuel Pump Relay Voltage

30

L-GN

11

Headlamp High Beam

31

PK/RD

339

Ignition Voltage

32

--

--

Not Used

Fuse Block - Underhood C3


Object Number: 1661101  Size: CH

Connector Part Information

    • AMP 3-936321-4
    • 32-Way M

Pin

Wire Color

Circuit Number

Function

1

BN/WH

799

ABS Serial Data (w/ABS)

BN/WH

799

ABS Derial Data (w/ABS)

2

L-BU

14

Left Turn Signal Lamp Voltage

L-BU

14

Left Turn Signal Lamp Voltage

L-BU

14

Left Turn Signal Lamp Voltage

3

YE

712

LH Low Beam Headlamp

4

D-GN

392

Rear Washer Motor Feed (w/Rear Wiper)

5

OG

228

Winshield Washer Motor Feed

6

--

--

Not Used

7

L-GN/BK

311

RH High Beam Headlamp

8

PK/RD

339

Ignition Voltage (w/ABS)

9

WH

1909

Wheel Speed Signal

D-GN

872

Right Front Wheel Speed Sensor Signal

10

--

--

Not Used

11

D-GN

189

Headlamp Leveling Motor Voltage

D-GN

189

Headlamp Leveling Motor Voltage

12

D-BU

15

RH Turn Signal Lamp (w/Euro Lighting System)

13

D-GN

738

Horn Signal

14

BN/WH

312

RH Low Beam Headlamp

15

--

--

Not Used

16

BN

833

RH Front Wheel Speed Sensor Return (w/Euro Lighting, w/o ABS)

17

L-GN/BK

875

ABS Warning Indicator (w/ABS)

18

BK

50

Ground (w/ABS)

19

BK

50

Ground

20

RD/WH

40

Battery Voltage

RD/WH

40

Battery Voltage

21

D-GN/WH

711

LH High Beam Headlamp Feed

22

--

--

Not Used

23

BN/WH

309

RH Position Lamp Feed (w/Euro Lighting System)

BN/WH

309

RH Position Lamp Feed (w/Dome Lamp)

24

PU

709

Left Park Lamp Voltage

PU

709

Left Park Lamp Voltage

25

BK

50

Ground

26

YE

1769

Front Fog Lamp Voltage

YE

1769

Front Fog Lamp Voltage

27

L-BU

409

Radiator Fan Hi

28

GY

532

Radiator Fan Relay

29

D-GN

59

A/C compressor Relay

30

L-BU/D-BU

20

Stop Lamp Signal (w/ABS)

31

OG/BK

495

Power Steering Pressure Sensor

32

BN/WH

33

Brake Warning Indicator

BN/WH

33

Brake Warning Indicator

Fuse Block - Underhood C4


Object Number: 583093  Size: CH

Connector Part Information

    • KET MG 610557
    • ?

Pin

Wire Color

Circuit Number

Function

1

RD/BK

342

Battery Positive Voltage

2

RD/BK

342

Battery Positive Voltage

Fuse Block - I/P Label


Object Number: 1658219  Size: MF

Fuse Block - I/P Label Usage

No

Fuse/Circuit Breaker

Rating

Description

F1

DRL Fuse

15A

Daytime Running Lamps

F2

T/T Box Fuse

10A

Tell Tale/ Driver Information Center

F3

ROOM LAMP Fuse

10A

Dome Lamps, Courtesy Lamps

F4

DOOR LOCK Fuse

15A

Door L ocks

F5

STOP LAMP Fuse

10A

Stop Lamps

F6

WIPER, REAR Fuse

10A

Rear Wipers

F7

WIPER, FRT Fuse

15A

Front Wipers

F8

B/UP LAMP Fuse

10A

Back Up Lamps

F9

BLOW MOTOR Fuse

20A

Blower Motor

F10

CLUSTER Fuse

10A

Instrument Cluster

F11

AIR BAG Fuse

10A

SIR

F12

P/WINDOW Fuse

30A

Power Window

F13

T/SIGNAL Fuse

10A

Blinker

F14

EMS Fuse

15A

Engine Management System

F15

--

--

Not Used

F16

--

--

Not Used

F17

CIGAR Fuse

15A

Power Outlets

F18

AUDIO Fuse

10A

Radio, Clock

--

BLINKER UNIT Relay

--

Combination Switch, Hazard Switch

--

DEFOG Relay

--

Defog Switch, Rear Window Defogger Grid

--

WIPER Relay

--

Wiper Motor

Ignition Switch


Object Number: 1467115  Size: CH

Connector Part Information

    • KET MG 650887
    • ?

Pin

Wire Color

Circuit Number

Function

1

OG

300

Ignition 2 Voltage

2

RD/WH

42

Battery Voltage

3

PU/RD

5

Starter Solenoid Voltage

4

PK

3

Ignition 1 Voltage

5

RD/BK

142

Battery Voltage

6

BN

4

Accessory Voltage