GM Service Manual Online
For 1990-2009 cars only
Table 1: Fuse Block - Instrument Panel
Table 2: Fuse Block - Underhood - X1 (134)
Table 3: Fuse Block - Underhood - X2 (132)
Table 4: Fuse Block - Underhood - X3 (130)
Table 5: Ignition Switch
Table 6: X139 - AUX 1 Ground
Table 7: X139 - AUX 2 Ground
Table 8: X139 - AUX 1 Power
Table 9: X139 - AUX 2 Power

Fuse Block - Instrument Panel


Object Number: 1989407  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

B1-A

RD

5.0

Battery Positive Voltage

B1-B

OG/BU

2.0

Battery Positive Voltage

B2-A

D-GN

5.0

RAP Supply Voltage

B2-B

D-GN

2.0

RAP Supply Voltage

B3-A

RD/BK

5.0

Battery Positive Voltage

B3-B

OG

2.0

Battery Positive Voltage

F1-A

OG/YE

0.5

Battery Positive Voltage

F2-A

RD/WH

5.0

Battery Positive Voltage

F2-B

OG

0.5

Battery Positive Voltage

F3-B

OG/RD

1.25

Battery Positive Voltage

F4-B

OG/YE

0.85

Battery Positive Voltage

F5-B

OG

1.25

Battery Positive Voltage

F6-A

RD

5.0

Battery Positive Voltage

F6-B

OG/GN

0.85

Battery Positive Voltage

F7-B

OG/WH

0.5

Battery Positive Voltage

F8-B

OG/RD

0.85

Battery Positive Voltage

F9-B

OG/RD

0.85

Battery Positive Voltage

F10-A

RD/YE

5.0

Battery Positive Voltage

F10-B

OG/PU

0.85

Battery Positive Voltage

F11-B

OG/BU

0.85

Battery Positive Voltage

F12-B

OG/BK

0.5

Battery Positive Voltage

F13-B

BN/YE

1.25

Accessory Voltage

F14-A

YE

5.0

Accessory Voltage

F14-B

BN/WH

1.25

Accessory Voltage

F15-B

BN/BU

0.5

Accessory Voltage

F16-B

BN

0.5

Accessory Voltage

F17-A

RD/YE

5.0

Battery Positive Voltage

F17-B

OG/BU

1.25

Battery Positive Voltage

F23-A

YE

0.3

LED Backlight Dimming Control

F23-B

PU/WH

0.3

I/P Dimming Control

F24-A

D-GN

5.0

RAP Supply Voltage

F24-B

D-GN

0.5

RAP Supply Voltage

R1-30

RD/WH

5.0

Battery Positive Voltage

R1-85

BN/YE

0.3

RAP Relay Control

R1-86

BK

1.25

Ground

R1-87

D-GN

5.0

RAP Supply Voltage

R2-30

GN/WH

1.25

Door Lock Actuator Lock Control

R2-85

BK

1.25

Ground

R2-86

L-BU

0.3

Door Lock Relay Control

R2-87

OG/RD

1.25

Battery Positive Voltage

R2-87A

BK

1.25

Ground

R3-30

BN/RD

1.25

Door Lock Actuator Unlock Control

R3-85

WH

0.3

Door Unlock Control

R3-86

OG/RD

1.25

Battery Positive Voltage

R3-87

OG/RD

1.25

Battery Positive Voltage

R3-87A

BK

1.25

Ground

R5-30

OG

0.5

Battery Positive Voltage

R5-85

OG

0.5

Battery Positive Voltage

R5-86

BN

0.3

Trunk Release Relay Control

R5-87

BN/WH

0.85

Rear Compartment Lid Release Actuator

R6-30

BN/RD

1.25

Driver Door Lock Actuator Unlock Control

R6-85

L-BU

0.3

Driver Door / Fuel Door Unlock Control

R6-86

OG/RD

1.25

Battery Positive Voltage

R6-87

OG/RD

1.25

Battery Positive Voltage

R6-87A

BK

1.25

Ground

R8-30

RD/BK

5.0

Battery Positive Voltage

R8-85

YE

0.3

Accessory Voltage

R8-86

BK

1.25

Ground

R8-87

YE

5.0

Accessory Voltage

R12-30

GY

3.0

Fuel Level Sensor Signal

R12-85

D-GN/WH

0.3

Ground

R12-86

BK

1.25

Fuel Pump Control

R12-87

OG/GN

3.0

Battery Positive Voltage

Fuse Block - Underhood - X1 (134)


Object Number: 1989411  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

PK/D-BU

1.25

Ignition 1 Voltage

2

--

--

Not Used

3

D-GN

0.5

Low Speed Cooling Fan Relay Control

4

--

--

Not Used

5

PK

0.5

Ignition 1 Voltage

6

--

--

Not Used

7

YE

0.5

Starter Relay Coil Control

8

RD/BK

3.0

Battery Positive Voltage

9

PU

3.0

Starter Solenoid Crank Voltage

10

--

--

Not Used

11

--

--

Not Used

12

--

--

Not Used

13

--

--

Not Used

14

--

--

Not Used

15

--

--

Not Used

16

--

--

Not Used

17

--

--

Not Used

18

--

--

Not Used

19

--

--

Not Used

20

OG

2.0

Battery Positive Voltage

21

--

--

Not Used

22

--

--

Not Used

23

BU/BK

0.5

High Speed Cooling Fan Relay Control

24

--

--

Not Used

25

PK/BU

1.25

Ignition 1 Voltage

26

--

--

Not Used

27

--

--

Not Used

28

--

--

Not Used

29

--

--

Not Used

30

--

--

Not Used

31

OG/YE

0.75

Battery Positive Voltage

32

BK

1.25

Ground

33

--

--

Not Used

34

WH/BU

0.5

Stop Lamp Switch Signal

35

--

--

Not Used

36

D-BU

0.5

TCM Accessory Signal

37

--

--

Not Used

38

--

--

Not Used

39

--

--

Not Used

40

--

--

Not Used

41

PK/BU

0.75

Ignition 1 Voltage

42

PK/BK

0.75

Ignition 1 Voltage

43

--

--

Not Used

44

--

--

Not Used

45

BK

1.25

Ground

46

BK

1.25

Ground

47

PK

1.25

Ignition 1 Voltage

48

--

--

Not Used

49

BN

0.5

Main Relay Control

50

--

--

Not Used

51

PK/BU

1.25

Ignition 1 Voltage

52

--

--

Not Used

53

--

--

Not Used

54

--

--

Not Used

Fuse Block - Underhood - X2 (132)


Object Number: 1989414  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

--

--

Not Used

2

--

--

Not Used

3

--

--

Not Used

4

--

--

Not Used

5

RD/GN

5.0

Battery Positive Voltage

6

RD/BK

5.0

Battery Positive Voltage

7

RD/WH

5.0

Battery Positive Voltage

8

PU

3.0

Rear Defog Element Supply Voltage

9

RD/YE

5.0

Battery Positive Voltage

10

--

--

Not Used

11

--

--

Not Used

12

--

--

Not Used

13

L-BU

0.75

Communication Enable Relay Supply Voltage

14

BN/WH

2.0

Washer Pump Relay Supply Voltage

15

WH/YE

0.3

Park Lamp Relay Control

16

--

--

Not Used

17

PK/BU

0.5

Ignition 1 Voltage

18

PU

0.75

Fog Lamps Supply Voltage

19

--

--

Not Used

20

--

--

Not Used

21

--

--

Not Used

22

--

--

Not Used

23

PU

0.75

Left Park Lamp Supply Voltage

24

WH/BU

0.3

Rear Defog Relay Control

25

PK/WH

0.3

Headlamp Low Beam Relay Control

26

BN/RD

0.3

Front Windshield Wiper Switch High Signal

27

D-GN/WH

0.3

Fog Lamps Relay Control

28

BN/WH

BN/YE

0.3

Headlamp High Beam Relay Control

29

BN/BK

0.3

Horn Relay Control

30

--

--

Not Used

31

OG

0.5

Washer Fluid Pump Relay Control

32

PK

0.3

Run Crank Control

33

--

--

Not Used

34

--

--

Not Used

35

--

--

Not Used

36

--

--

Not Used

37

--

--

Not Used

38

WH

0.3

Headlamp Washer Relay Control

39

BN

0.3

Low Washer Fluid Indicator Signal

40

D-BU/WH

0.5

Right Front Turn Signal Lamp Supply Voltage

41

L-GN

0.75

Backup Lamp Supply Voltage

42

--

--

Not Used

43

WH/BU

0.5

Stop Lamp Switch Signal

44

--

--

Not Used

45

D-BU

0.3

TCM Accessory Signal

46

--

--

Not Used

47

--

--

Not Used

48

--

--

Not Used

49

--

--

Not Used

50

--

--

Not Used

51

--

--

Not Used

52

L-BU/WH

0.5

Left Front Turn Signal Lamp Supply Voltage

53

--

--

Not Used

54

PU/WH

0.3

Communication Enable Relay Control

55

D-GN

0.3

Reverse Relay Control

56

GY

0.3

Windshield Wiper Switch Signal 2

57

--

--

Not Used

58

PK

0.5

Ignition 1 Voltage (LHD)

59

OG/GN

0.75

Battery Positive Voltage

60

GN

0.75

Theft Deterrent Horn Fuse Supply Voltage

61

--

--

Not Used

62

--

--

Not Used

63

--

--

Not Used

64

--

--

Not Used

65

BN/WH

0.75

Lamp Supply Voltage

66

--

--

Not Used

67

--

--

Not Used

68

PK/BU

0.5

Ignition 1 Voltage

69

PU

0.3

Hood Closed Switch Signal

70

PK/BK

0.3

Hood Ajar Switch Signal

71

--

--

Not Used

72

--

--

Not Used

73

--

--

Not Used

74

BN/WH

2.0

Windshield Wiper Motor High Speed

75

--

--

Not Used

76

--

--

Not Used

77

--

--

Not Used

78

RD/BU

2.0

Battery Positive Voltage

79

--

--

Not Used

80

RD

5.0

Battery Positive Voltage

81

--

--

Not Used

82

--

--

Not Used

83

D-GN

2.0

Windshield Wiper Motor Low Speed

84

--

--

Not Used

Fuse Block - Underhood - X3 (130)


Object Number: 1989418  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

WH

3.0

Cooling Fan Low Reference

2

--

--

Not Used

3

--

--

Not Used

4

BK

3.0

Ground

5

--

--

Not Used

6

OG

0.75

Windshield Washer Pump Control

7

--

--

Not Used

8

D-GN/WH

0.5

Left Headlamp High Beam Supply Voltage

9

PK/BK

0.3

Hood Ajar Switch Signal

10

PU

0.5

Left Park Lamp Supply Voltage

11

--

--

Not Used

12

--

--

Not Used

13

--

--

Not Used

14

L-BU/WH

0.5

Left Front Turn Signal Lamp Supply Voltage

15

D-BU/WH

0.5

Right Front Turn Signal Lamp Supply Voltage

16

BN

0.3

Low Washer Fluid Indicator Signal

17

--

--

Not Used

18

BN/WH

0.5

Right Park Lamp Supply Voltage

19

--

--

Not Used

20

PU

0.3

Hood Closed Switch Signal

21

BN/BK

0.5

Right Headlamp Low Beam Supply Voltage

22

YE

0.5

Left Headlamp Low Beam Supply Voltage

23

L-GN/BK

0.5

Right Headlamp High Beam Supply Voltage

24

--

--

Not Used

25

D-GN

0.75

Horn Fuse Supply Voltage

26

--

--

Not Used

27

--

--

Not Used

28

--

--

Not Used

29

GY

3.0

Cooling Fan Low Reference

30

--

--

Not Used

31

--

--

Not Used

32

BU

3.0

Cooling Fan Motor Supply Voltage

Ignition Switch


Object Number: 1989421  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

PK

0.3

Run/Crank Voltage

2

OG/BK

0.3

Battery Positive Voltage

3

BN

0.3

Accessory Voltage

4

WH

0.3

Ignition Key Resistor Low Reference

5

--

--

Not Used

6

WH/BK

0.3

Ignition Key Resistor Signal

X139 - AUX 1 Ground


Object Number: 1989425  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

BK

2.0

Ground

2

BK

2.0

Ground

3

BK

1.25

Ground

4

BK

1.25

Ground

5

BK

1.25

Ground

6

BK

2.0

Ground

7

BK

2.0

Ground

8

BK

1.25

Ground

9

BK

1.25

Ground

10

BK

1.25

Ground

X139 - AUX 2 Ground


Object Number: 1989425  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

BK

2.0

Ground

2

BK

2.0

Ground

3

BK

1.25

Ground

4

BK

1.25

Ground

5

BK

1.25

Ground

6

BK

2.0

Ground

7

BK

2.0

Ground

8

BK

1.25

Ground

9

BK

1.25

Ground

10

BK

1.25

Ground

X139 - AUX 1 Power


Object Number: 1989425  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

RD

2.0

Battery Positive Voltage

2

RD

2.0

Battery Positive Voltage

3

RD

1.25

Battery Positive Voltage

4

RD

1.25

Battery Positive Voltage

5

RD

1.25

Battery Positive Voltage

6

RD

2.0

Battery Positive Voltage

7

RD

2.0

Battery Positive Voltage

8

RD

1.25

Battery Positive Voltage

9

RD

1.25

Battery Positive Voltage

10

RD

1.25

Battery Positive Voltage

X139 - AUX 2 Power


Object Number: 1989425  Size: CH

Connector Part Information

Pin

Wire Colour

Wire Size

Function

1

RD

2.0

Battery Positive Voltage

2

RD

2.0

Battery Positive Voltage

3

RD

1.25

Battery Positive Voltage

4

RD

1.25

Battery Positive Voltage

5

RD

1.25

Battery Positive Voltage

6

RD

2.0

Battery Positive Voltage

7

RD

2.0

Battery Positive Voltage

8

RD

1.25

Battery Positive Voltage

9

RD

1.25

Battery Positive Voltage

10

RD

1.25

Battery Positive Voltage