GM Service Manual Online
For 1990-2009 cars only
Connector 1: Fuse Block - I/P - Label
Connector 2: Fuse Block - I/P X1
Connector 3: Fuse Block - I/P X2
Connector 4: Fuse Block - Underhood Auxiliary Label (Diesel)
Connector 5: Fuse Block - Underhood Label
Connector 6: Fuse Block - Underhood X1
Connector 7: Fuse Block - Underhood X2
Connector 8: Fuse Block - Underhood X3

Fuse Block - I/P - Label


Object Number: 1996936  Size: LF

Fuse Block - I/P - Label Usage

Fuse

Rating

Description

F1

20A

Power Window Main Switch, Sunroof Module

F2

20A

Power Window Main Switch

F3

10A

Front Washer Pump Relay

F4

--

Not Used

2A

BCM, Contact Coil (C105/Short Body)

F5

10A

SDM

F6

10A

SDM

F7

--

Not Used

F8

10A

Rear Fog Lamp Relay

F9

10A

Rear Fog Lamp Relay, Fuel Pump, Fuel Tank Level Sensor, ECM Mirror, Clutch Switch

F10

10A

Radio, Clock

Radio (C105/Short Body)

F11

10A

BCM

F12

2A

Ignition Switch, Immobilizer

F13

10A

Instrument Cluster, Driver Information Center, Passenger Seat Belt Indicator

Instrument Cluster, I/P Center Switch (C105/Short Body)

F14

15A

BCM, XBCM

BCM, XBCM, Trailer Kit Inline (C105/Short Body)

F15

10A

Power Steering Control Module

Power Steering Control Module, SI-ECM, Head Lamp (C105/Short Body)

F16

20A

BCM

F17

15A

Outside Rearview (OSRV) Mirror Heating Relay

10A

Outside Rearview (OSRV) Mirror Heating Relay (C105/Short Body)

F18

10A

Manual HVAC Control, Auto HVAC Control, Air Quality Sensor, Blower High Relay, Object Detection Module, Engine Auxiliary Fuse Block (PTC Relay)

Manual HVAC Control, Auto HVAC Control, Air Quality Sensor, Blower High Relay, Object Detection Module, Engine Auxiliary Fuse Block (PTC Relay), Heated Seat Unit (C105/Short Body)

F19

15A

Manual HVAC Control, Auto HVAC Control, DLC

F20

10A

Lift Gate Glass Relay

--

Not Used (C105/Short Body)

F21

--

Not Used

10A

Tail Lamp Right, Head Lamp Right, Park Lamp Right (C105/Short Body)

F22

--

Not Used

10A

Liftgate Latch Assembly (C105/Short Body)

F23

--

Not Used

10A

Trailer Inline, Trailer Kit Inline (C105/Short Body)

F24

15A

BCM

F25

10A

XBCM

XBCM, Trailer Kit Inline, Power Sounder (C105/Short Body)

F26

15A

BCM

F27

15A

Front Fog Relay

F28

15A

Instrument Cluster, Clock, Radio, RFA Receiver, Driver Information Center

Instrument Cluster, I/P Center Switch, Radio, RFA Receiver, Driver Information Center, UHP Communication Box, Object Detection Module, Power Sounder, Intrusion Sensor, Inclination Sensor (C105/Short Body)

F29

15A

TCM

F30

20A

Heated Seat Switch

--

Not Used (C105/Short Body)

F31

15A

BCM

F32

20A

Auxiliary Power Outlet - Cargo

Auxiliary Power Outlet - Cargo, Trailer Inline, Trailer Kit Inline (C105/Short Body)

F33

20A

Cigar Lighter

F34

20A

Auxiliary Power Outlet - Cargo

Auxiliary Power Outlet - Cargo, Trailer Relay Module, Trailer Kit Inline (C105/Short Body)

F35

15A

BCM

F36

15A

Door Dead Lock Relay

Door/Fuel Unlock Relay (C105/Short Body)

F37

10A

Power Window Switch

F38

20A

Door Lock/Unlock Relay

F39

10A

Mirror Control Switch, Folding Mirror Unit

Mirror Control Switch, Folding Mirror Unit, I/P Center Switch, Sun Roof Module (C105/Short Body)

Fuse Block - I/P X1


Object Number: 1835062  Size: CH

Connector Part Information

  • OEM: TYCO 0-1743134-2
  • Service: N/A
  • Description: 60-Way F Unsealed

Fuse Block - I/P X1

Pin

Wire

Circuit

Function

1

--

--

Not Used

2

YE

--

Accessory Voltage

3-9

--

--

Not Used

10

PK

--

Run/Crank Ignition 1 Voltage

11

PK

--

Run/Crank Ignition 1 Voltage

12

PK

--

Run/Crank Ignition 1 Voltage

13

--

--

Not Used

14

RD/WH

--

Battery Positive Voltage

15-16

--

--

Not Used

17

YE

--

Accessory Voltage

18

YE

--

Accessory Voltage

19

PK

--

Run/Crank Ignition 1 Voltage

20-21

--

--

Not Used

22

RD/WH

--

Battery Positive Voltage

23-24

--

--

Not Used

25

PK

--

Run/Crank Ignition 1 Voltage

26

YE

--

Run/Crank Ignition 1 Voltage

27-28

--

--

Not Used

29

RD/WH

--

Battery Positive Voltage

30

RD/WH

--

Battery Positive Voltage

31

--

--

Not Used

32

PK

--

Run/Crank Ignition 1 Voltage

33-34

--

--

Not Used

35

RD/WH

--

Battery Positive Voltage

36-37

--

--

Not Used

38

RD/WH

--

Battery Positive Voltage

39-40

--

--

Not Used

41

RD/WH

--

Battery Positive Voltage

42

RD/WH

--

Battery Positive Voltage

43

BN

--

Run Ignition 3 Voltage

44-45

--

--

Not Used

46

RD/WH

--

Battery Positive Voltage

47-48

--

--

Not Used

49

RD/WH

--

Battery Positive Voltage

50

RD/WH

--

Battery Positive Voltage

51-53

--

--

Not Used

54

RD/WH

--

Battery Positive Voltage

55-56

--

--

Not Used

57

RD/WH

--

Battery Positive Voltage

58

RD/WH

--

Battery Positive Voltage

59

BN

--

Run Ignition 3 Voltage

60

BN

--

Run Ignition 3 Voltage

Fuse Block - I/P X2


Object Number: 1835062  Size: CH

Connector Part Information

  • OEM: TYCO 0-1743134-3
  • Service: N/A
  • Description: 60-Way F 110/250/375 Unsealed

Fuse Block - I/P X2

Pin

Wire

Circuit

Function

1-2

--

--

Not Used

3

RD/WH

--

Battery Positive Voltage

4

OG

--

Rear For Lamp Supply Voltage

5-6

--

--

Not Used

7

RD/WH

--

Battery Positive Voltage

8

BN

--

Run Ignition 3 Voltage

9

--

--

Not Used

10

PK

--

Run/Crank Ignition 1

11

WH

--

Rear Defog Relay Control

12

PK

--

Lift Glass/Trunk Exterior Release Signal

13

RD/WH

--

Battery Positive Voltage

14

--

--

Not Used

15

RD/WH

--

Battery Positive Voltage

16

BN

--

Run Ignition 3 Voltage

17

YE

--

Accessory Voltage

18

PK

--

Run/Crank Ignition 1 Voltage

19

PK

--

Run/Crank Ignition 1 Voltage

20

OG

--

Windshield Washer Pump Control

21

RD/WH

--

Battery Positive Voltage

22-23

--

--

Not Used

24

BN

--

Run Ignition 3 Voltage

25

YE

--

Run/Crank Relay Coil Control

26

PK

--

Run/Crank Ignition 1 Voltage

27

BN

--

Lift Glass/Trunk Motor Release Control

28

RD/WH

--

Battery Positive Voltage

29-30

--

--

Not Used

31

BN

--

Rap Relay Coil Control

32

PK

--

Run/Crank Ignition 1 Voltage

33

YE

--

Rear Fog Lamp Relay Control

34

RD/WH

--

Battery Positive Voltage

35

--

--

Not Used

36

RD/WH

--

Battery Positive Voltage

37

YE

--

Accessory Voltage

38

YE

--

Power Supply

49

RD/WH

--

Battery Positive Voltage

40-41

--

--

Not Used

42

RD/WH

--

Battery Positive Voltage

43

OG

--

--

44

BN

--

Signal Ground

45

YE

--

Accessory Voltage

46

--

--

Not Used

47

GY

--

Door Lock Actuator Lock Control

48

RD/WH

--

Battery Positive Voltage

49

BN

--

Door Lock Actuator Unlock Control

50

--

--

Not Used

51

RD/WH

--

Battery Positive Voltage

52

--

--

Not Used

53

YE

--

Accessory Voltage

54

--

--

Not Used

55

BN

--

Driver Door Lock Actuator Unlock Control

56

L-GN

--

Left Front Door Lock Relay Control

57

BK

--

Ground

58

PK/BK

--

Engine Main Relay Fused Control (2)

59-60

--

--

Not Used

Fuse Block - Underhood Auxiliary Label (Diesel)


Object Number: 1791143  Size: SF

Fuse Block - Underhood Auxiliary -- Label Usage (Diesel)

Fuse

Rating

Description

Af1

60A

Glow Plug Control Unit

Af2

30A

Fuel Filter Heater Relay

Af3

40A

PTC-1 Relay

Af4

40A

PTC-2 Relay

Af5

40A

PTC-3 Relay

Fuse Block - Underhood Label


Object Number: 1791084  Size: LF

Fuse Block - Underhood Label Usage

Fuse

Rating

Description

Ef1

20A

Rear Wiper Motor

Ef2

60A

I/P Fuse Block (Battery Main)

Ef3

40A

I/P Fuse Block (IGN II), Blower Motor

Ef4

40A

ABS Module

Ef5

20A

Starter Relay

Ef6

30A

Liftgate Defogger

Ef7

40A

I/P Fuse Block (ACC/RAP Relay, Run/Crank Relay)

Ef8

30A

Cooling Fan Auxiliary

Ef9

30A

Cooling Fan Main

Ef10

20A

ECM

Ef11

15A

2.0L: Throttle Plate Actuator, Boost Pressure Actuator, CMP Sensor

2.4L: Canister Purge Solenoid, LEGR Valve, CMP Sensor

3.2L: Ignition Coil, Injector (#2, 4, 6)

Ef12

15A

2.0L: ECM

2.4L: Front and Rear HO2S

3.2L: HO2S, VIM, CAM Phaser Intake/Exhaust, Canister Purge Solenoid

Ef13

10A

Starter Relay, Main Relay

Starter Relay, Main Relay, ECM (C105/Short Body)

Ef14

10A

A/C Compressor Relay

Ef15

15A

2.0L: Glow Plug Control Unit, Cooling Fan (Auxiliary, Main, Control), A/C COMP Relay, Engine Fuse Block Auxiliary

2.4L: Injector, Cooling Fan (AUX., Main Control), A/C Comp. Relay

3.2L: Ignition Coil, Injector (#1, 3, 5), Cooling Fan (Auxiliary, Main, Control) A/C Compressor Relay

Ef16

15A

AWD Control Module

Ef17

15A

Fuel Pump Relay

Ef18

20A

ABS Module, Oil Feeding Connector

Ef19

--

Not Used

20A

Heated Seat Control Unit (C105/Short Body)

Ef20

15A

Brake Switch

Ef21

25A

Cooling Fan Control Relay

Ef22

15A

Horn Relay

Ef23

30A

Power Seat and Heated Seat Switch Power Seat Test Connector

Ef24

15A

Head Lamp Left, Tail Lamp Left, Turn/Park Lamp Left, License Lamp

Ef25

20A

Sunroof Module

Ef26

15A

Head Lamp Right, Mirror Control Switch

Head Lamp Right, Light Switch, SI-ECM (C105/Short Body)

Ef27

15A

Head Lamp Left

Ef28

15A

Head Lamp

Ef29

15A

FRT Fog Lamp Relay

Ef30

10A

Headlamp Left, Tail Lamp Left

Headlamp Left, Tail Lamp Left, Park Lamp Left, License Lamp Relay (C105/Short Body)

Ef31

10A

Headlamp Right, Tail Lamp Right

Trailer Inline, Trailer Kit Inline (C105/Short Body)

Ef32

15A

TCM

Ef33

20A

Headlamp Washer

Ef34

--

Not Used

Ef35

20A

Not Used

Ef36

25A

Not Used

Ef37

10A

Not Used

Ef38

15A

Not Used

Fuse Block - Underhood X1


Object Number: 1835064  Size: CH

Connector Part Information

  • OEM: TYCO 0-1743130-2
  • Service: N/A
  • Description: 55-Way Block Assembly Unsealed

Fuse Block - Underhood X1

Pin

Wire

Circuit

Function

1

0.35 GY

532

Cooling Fan Motor Supply Volt (2)

2

0.35 PK/BK

5291

Ignition 1 Voltage

3

0.35 PK/BK

5291

Ignition 1 Voltage

4

0.35 PK/BK

5291

Ignition 1 Voltage

5

--

--

Not Used

6

0.5 RD/WH

40

Battery Positive Voltage (LD9)

6

0.5 BK/WH

251

Ground (LLW/LU1)

7

2 PU

6

Starter Solenoid Crank Voltage

8

0.35 YE

447

Starter Relay Coil Control

9-10

--

--

Not Used

11

0.35 PK/BK

5292

Ignition 1 Voltage (LLW/LU1)

12

0.35 PK/BK

5292

Ignition 1 Voltage (LD9/LLW)

13

0.35 PK/BK

5292

Ignition 1 Voltage (LD9/LLW)

14

0.35 PK/BK

5292

Ignition 1 Voltage (LD9/LLW)

15

--

--

Not Used

16

0.35 PK/BK

5293

Ignition 1 Voltage (LD9)

17

0.35 PK/BK

5293

Ignition 1 Voltage

18

0.35 PK/BK

5293

Ignition 1 Voltage

19

--

--

Not Used

20

0.35 PK/BK

5290

Ignition 1 Voltage

21

0.35 PK/BK

5290

Ignition 1 Voltage (LLW/LU1)

22

0.35 L-BU

409

Cooling Fan Motor Supply Volt (1)

23-24

--

--

Not Used

25

0.35 D-GN

59

A/C Comp Clutch Supply Volt

26

0.35 PK/BK

5293

Ignition 1 Voltage

27

0.35 PK/BK

5293

Ignition 1 Voltage (LD9/LU1)

28

0.5 BK

150

Ground

29

--

--

Not Used

30

0.35 D-GN

335

Low Speed Cooling Fan Relay Control

31-32

--

--

Not Used

33

0.35 WH

504

Cooling Fan Motor Low Reference

34

0.35 YE

772

Trans PSN Switch B2 Signal (M98)

35

0.35 PK

539

Ignition 1 Voltage

36

0.35 RD/WH

40

Battery Positive Voltage (LD9/LU1)

37

0.35 RD/WH

40

Battery Positive Voltage (LD9)

38

--

--

Not Used

39

0.35 BK/WH

251

Signal Ground

40-41

--

--

Not Used

42

0.35 BN

41

Ignition 3 Voltage (LLW)

43

0.35 BN/WH

771

Trans PSN Switch B1 Signal (M98)

44

0.35 WH

776

Trans PSN Switch PB Signal (M98)

45

0.35 PK

539

Run/Crank Ignition 1 Voltage

46

0.35 D-GN/WH

459

A/C Comp Clutch Relay Control

47

--

--

Not Used

48

0.35 D-GN/WH

465

Fuel Pump Primary Relay Control

49-50

--

--

Not Used

51

0.35 GY

773

Trans PSN Switch B3 Signal

52

0.35 WH

1310

EVAP Canister Vent Solenoid Control (LD9)

52

0.35 WH/BK

910

PTC Request Signal (LLW)

53

0.35 L-BU

20

Stop Lamp Supply Voltage

54

0.35 PK

539

Run/Crank Ignition 1 Voltage

55

0.35 D-BU

473

High Speed Cooling Fan Relay Control

56

--

--

Not Used

Fuse Block - Underhood X2


Object Number: 1835062  Size: CH

Connector Part Information

  • OEM: TYCO 0-1743126-2
  • Service: N/A
  • Description: 60-Way Block Assembly Unsealed

Fuse Block - Underhood X2

Pin

Wire

Circuit

Function

1

0.35 GY

120

Fuel Pump Supply Voltage

2

0.35 PU

92

Windshield Wiper Motor High Speed

3

--

--

Not Used

4

0.35 BN/WH

41

Ignition 3 Voltage

5

0.35 BN/WH

771

Transmission PSN Switch B1 Signal (M98)

6

0.35 L-BU

20

Stop Lamp Supply Voltage

7

0.35 PK

539

Ignition 1 Voltage

8

0.35 RD/WH

2440

Battery Positive Voltage

9

0.35 RD/WH

840

Battery Positive Voltage

10

0.35 RD/WH

540

Battery Positive Voltage

11

--

--

Not Used

12

0.35 D-GN

95

Windshield Washer Switch Signal

13

--

--

Not Used

14

0.35 YE

772

Transmission PSN Switch B2 Signal (M98)

15

0.35 WH

776

Transmission PSN Switch PB Signal (M98)

16

0.35 WH

2282

Headlamp Washer Relay Control

17

0.35 RD/WH

640

Battery Positive Voltage (U88)

18

0.35 BN

860

Front Windshield Wiper Switch High Signal

19

0.35 RD/WH

2140

Battery Positive Voltage (AWD)

20

0.35 GY

773

Transmission PSN Switch B3 Signal (M98)

21

0.35 WH/BK

910

PTC Request Signal (LLW)

22

0.35 BN

28

Horn Relay Control

23

0.35 RD/WH

2540

Battery Positive Voltage (VXC)

24

0.35 BN

141

Ignition 3 Voltage

25

0.35 PU/WH

1970

Headlamp Low Beam Relay Control

26

0.35 L-GN

5486

Run Relay Control

27-29

--

--

Not Used

30

0.35 RD/WH

2540

Battery Positive Voltage (VXC)

31

0.35 PU

709

Left Park Lamp Supply Voltage

32

0.35 GN/WH

1317

Fog Lamp Relay Control

33

0.35 D-BU

45

Park Lamp Supply Voltage

34

0.35 L-BU/WH

1314

Left Front Turn Signal Lamp Supply Voltage (-T90)

35

0.35 WH

193

Rear Defog Relay Control

36

0.35 GY

91

Windshield Wiper Switch Signal 2

37

0.35 RD/WH

2040

Battery Positive Voltage (LD9)

38

0.35 BN/WH

312

Right Headlamp Low Beam Supply Voltage

39

0.35 BN/WH

309

Right Park Lamp Supply Voltage

40

0.35 OG/BK

645

Low Reference

41

0.35 L-BU/WH

1314

Left Front Turn Signal Lamp Supply Voltage (T90)

42

0.35 OG

228

Windshield Washer Pump Control

43

0.35 BN/WH

1969

Headlamp Relay Control

44

0.35 RD/WH

240

Battery Positive Voltage

45

--

--

Not Used

46

0.35 L-BU/WH

1315

Right Front Turn Signal Lamp Supply Voltage (T90)

47

0.35 D-GN/WH

636

Ambient Air Temperature Sensor Signal

48

0.35 RD/WH

140

Battery Positive Voltage

49

0.35 PU

5531

Hood Closed switch Signal

50

0.35 D-GN

392

Rear Window Washer Pump Control

51

0.35 RD/WH

2240

Battery Positive Voltageal

52

0.35 PU

293

Rear Defog Element Supply Voltage

53

--

--

Not Used

54

0.35 D-BU/WH

1315

Right Front Turn Signal Lamp Supply Voltage (-T90)

55

0.35 PU/WH

5203

Air Quality Sensor Signal

56

0.35 RD/WH

2340

Battery Positive Voltage

57

0.35 BN/WH

99

Windshield Washer Fluid Level Signal

58

--

--

Not Used

59

0.35 D-GN

189

Headlamp Leveling Motor Supply Voltage

60

0.35 RD/WH

940

Battery Positive Voltage

Fuse Block - Underhood X3


Object Number: 1835064  Size: CH

Connector Part Information

  • OEM: TYCO 1-1743130-3
  • Service: N/A
  • Description: 56-Way Block Assembly Unsealed

Fuse Block - Underhood X3

Pin

Wire

Circuit

Function

1

--

--

Not Used

2

0.35 BN

2609

Park Lamps Supply Voltage

3

0.35 D-BU/WH

1315

Right Front T/Signal Lamp Supply Voltage

4

0.35 PU/WH

5203

Air Quality Sensor Signal

5

0.35 BN

41

Run Ignition 3 Voltage

6

0.35 L-BU/WH

1314

Left Front T/Signal Lamp Supply Voltage

7

0.35 BN/WH

99

Windshield Washer Fluid Level Sensor Signal

8

--

--

Not Used

9

0.35 D-GN

392

Rear Window Washer Pump

10

--

--

Not Used

11

0.35 BN

541

Ignition 3 Voltage

12

--

--

Not Used

13

0.35 D-GN/WH

636

Outside Ambient Air Temperature

14-15

--

--

Not Used

16

0.35 PU

5531

Hood Closed Switch Signal

17

0.35 BN/WH

6547

Air Quality Sensor Low Reference

18

0.35 D-GN

189

HDLP Leveling Motor Supply Voltage

19

--

--

Not Used

20

0.35 YE

712

Left HDLP Low Beam Supply Voltage

21

--

--

Not Used

22

0.35 OG/BK

645

Sensor Low Reference

23

--

--

Not Used

24

0.35 PU

34

Front Fog Lamp Supply

25

--

--

Not Used

26

0.35 OG

228

Windshield Washer Pump Control

27

0.35 D-GN

189

HDLP Leveling Motor Supply Voltage

28-29

--

--

Not Used

30

0.35 BN/WH

312

Right HDLP Low Beam Supply Voltage

31-33

--

--

Not Used

34

0.35 D-GN/WH

711

Left HDLP High Beam Supply Voltage

35-36

--

--

Not Used

37

0.35 BK

150

Ground

38

--

--

Not Used

39

0.35 BN/WH

709

Left Park Lamp Supply Voltage

40-42

--

--

Not Used

43

0.35 L-GN/BK

311

Right HDLP High Beam Supply Voltage

44

--

--

Not Used

45

0.35 D-GN

29

HDRN Control

46

0.35 D-GN

29

HDRN Control

47-53

--

--

Not Used

54

0.35 PU

1197

Headlamp Washer Pump Control

55-56

--

--

Not Used