GM Service Manual Online
For 1990-2009 cars only
Table 1: Accelerator Pedal Position (APP) Sensor
Table 2: BARO Sensor
Table 3: Boost Sensor
Table 4: Camshaft Position (CMP) Sensor-Bottom
Table 5: Camshaft Position (CMP) Sensor-Top
Table 6: Clutch Switch
Table 7: Coolant Level Switch
Table 8: Cooling Fan Control
Table 9: Engine Control Module (ECM) C1
Table 10: Engine Control Module (ECM) C2
Table 11: Engine Coolant Temperature (ECT) Sensor
Table 12: Ether Solenoid
Table 13: Fuel Injector 1
Table 14: Fuel Injector 2
Table 15: Fuel Injector 3
Table 16: Fuel Injector 4
Table 17: Fuel Injector 5
Table 18: Fuel Injector 6
Table 19: High Idle Switch
Table 20: Intake Air (IA) Heater
Table 21: Intake Air (IA) Heater Relay
Table 22: Intake Air Temperature (IAT) Sensor
Table 23: Suction Control Valve (SCV)
Table 24: Trans Speed Sensor (Man)
Table 25: Water in Fuel Sensor

Accelerator Pedal Position (APP) Sensor


Object Number: 684807  Size: CH

Connector Part Information

    • 12110293
    • 3-Way F Metri-Pack 150 Series Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

WH/BK

1164

5-Volt Reference

B

BK/WH

451

Ground

C

D-BU

1161

APP Sensor 1 Signal

BARO Sensor


Object Number: 684840  Size: CH

Connector Part Information

    • 12129946
    • 3-Way F Metri-Pack 150 Series Sealed (GY)

Pin

Wire Color

Circuit No.

Function

A

GN

G829

Low Reference

B

GN

G849

Baro Sensor Signal

C

WH

G828

5-Volt Reference

Boost Sensor


Object Number: 684840  Size: CH

Connector Part Information

    • 12129946
    • 3-Way F Metri-Pack 150 Series Sealed (GY)

Pin

Wire Color

Circuit No.

Function

A

GN

G829

Low Reference

B

PK

A746

Boost Pressure Sensor Signal

C

WH

G828

5-Volt Reference

Camshaft Position (CMP) Sensor-Bottom


Object Number: 523630  Size: CH

Connector Part Information

    • 15326801
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BU

E965

Camshaft Sensor Signal-Bottom

B

BK

E966

Low Reference

Camshaft Position (CMP) Sensor-Top


Object Number: 523630  Size: CH

Connector Part Information

    • 15326801
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

E963

Camshaft Sensor Signal-Top

B

WH

E964

Low Reference

Clutch Switch


Object Number: 742641  Size: CH

Connector Part Information

    • 12048272
    • 2-Way F Metri-Pack 280 Series (RD)

Pin

Wire Color

Circuit No.

Function

A

BN/WH

379

CPP Switch Signal

B

BN

981

Rear Floodlamp On Relay Control

Coolant Level Switch


Object Number: 635009  Size: CH

Connector Part Information

    • 12052641
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

L-GN

1478

Coolant Level Switch Signal

B

BK/WH

451

Ground

Cooling Fan Control


Object Number: 632357  Size: CH

Connector Part Information

    • 15326829
    • 6-Way F 150 Sealed (BK)

Pin

Wire Color

Circuit No.

Function

A

BK/WH

1120

Clutch Coil Supply Voltage

B

GY

2365

Low Reference

C

D-BU

2364

Cooling Fan Speed Signal

D

PU

719

Low Reference

E

BK

450

Ground

F

--

--

Not Used

Engine Control Module (ECM) C1


Object Number: 328564  Size: CH

Connector Part Information

    • 12186584
    • 70-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

GY

2365

Low Reference

3

BK

470

Low Reference

4

WH/BK

1164

5-Volt Reference

5

BK/WH

451

Ground

6

GY/BK

1467

Air Shift Switch Signal (Air Operated)

7

L- BU

494

Engine Shut Off-Signal

8

TN/BK

1921

SAE J1708 Serial Data A

9

WH/BK

1922

SAE J1708 Serial Data B

10

TN

1997

Headlamp Washer Pump Control

11

BK/WH

1120

Engine Fan Clutch Control

12

PU

2656

Exhaust Brake Control

13-14

--

--

Not Used

15

PU

1589

Fuel Level Sensor Signal - Primary

16

L-GN

2081

Exhaust Brake Switch Relay

17

--

--

Not Used

18

PU

719

Low Reference & LG5

19

D-GN/WH

2665

PTO Enable

20

--

--

Not Used

21

RD

2013

High Idle Indicator Control

22

BN/WH

379

CPP Switch Signal

23-25

--

--

Not Used

26

D-BU

1936

Fuel Level Sensor Signal - Secondary

27

--

--

Not Used

28

BN/WH

419

MIL Control

29

--

--

Not Used

30

YE

32

Instrument Panel Lamp Fuse Supply Voltage

31

YE

447

Starter Relay Coil Control

32

L-BU

2221

Signal High - Rear

33

D-GN

2222

Signal Low - Rear

34

D-GN

2362

CAN Serial Data Low

35

D-BU

84

Cruise Control Set/Coast Switch Signal

36

D-GN /WH

817

Vehicle Speed Signal

37

--

--

Not Used

38

WH

121

Engine Speed Signal

39

--

--

Not Used

40

D-GN

534

High Idle Switch Signal

41-43

--

--

Not Used

44

GR/BK

87

Cruise Control Resume/Accel Switch Signal

45

BN

86

Cruise Control Release Signal

46-48

--

--

Not Used

49

L-GN

1478

Coolant Level Switch Signal

50

YE

2361

CAN Serial Data High

51

--

--

Not Used

52

OG

1540

Battery Positive Voltage

53

OG

1540

Battery Positive Voltage

54-55

--

--

Not Used

56

L-GN

488

PTO On Switch-Signal

57

--

--

Not Used

58

PU

2663

PTO Set

59

GY

397

Cruise Control On Switch Signal

60

TN

2664

Coolant Fan Control

61

--

--

Not Used

62

D-GN/WH

459

A/C Compressor Clutch Relay Control

63

--

--

Not Used

64

L-BU

1320

CHMSL Supply Voltage/Stop Lamp Supply Voltage

65

BK/WH

251

Ground

66

D-BU

1161

APP Sensor 1 Signal

67

BK/WH

251

Ground

68-69

--

--

Not Used

70

PK

439

Ignition 1 Voltage

Engine Control Module (ECM) C2


Object Number: 328564  Size: CH

Connector Part Information

    • 12186584
    • 70-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

WH

828

5-Volt Reference

3

GN

829

Low Reference

4-7

--

--

Not Used

8

BU

850

Intake Air Heater Indicator/Relay Control

9-17

--

--

Not Used

18

PK

833

Low Reference

19-21

--

--

Not Used

22

--

--

CKP Sensor - High

23

--

--

CKP Sensor - Low

24

GY

994

Oil Pressure Sensor Signal

25-26

--

--

Not Used

27

BN

849

Fuel Rail Pressure Sensor Signal

28-31

--

--

Not Used

32

BU

995

ECT Sensor Signal

33

GY

458

Oil Level Switch Signal

34

--

--

Not Used

35

BU

967

IAT Sensor Signal

36

GY

701

Fuel Injector 1 Control

37

PU

702

Fuel Injector 2 Control

38

BN

703

Fuel Injector 3 Control

39

GN

704

Fuel Injector 4 Control

40

PK

746

MAP Sensor Signal

41

BN

826

5-Volt Reference

42

BU

827

Low Reference

43

--

--

Not Used

44

WH

983

Low Reference

45

OG

984

Low Reference

46

YE

985

Low Reference

47

--

--

Not Used

48

BK

963

Top Camshaft Position Signal - High

49

WH

964

Top Camshaft Position Signal - Low

50-53

--

--

Not Used

54

BU

705

Fuel Injector 5 Control

55

GY

706

Fuel Injector 6 Control

56-57

--

--

Not Used

58

BU

965

Bottom Camshaft Position Signal - High

59

YE

966

Bottom Camshaft Position Signal - Low

60

--

--

Not Used

61

PK

854

Fuel Pressure Regulator Solenoid Control - PWM

62

PU

855

Low Reference

63-70

--

--

Not Used

Engine Coolant Temperature (ECT) Sensor


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    •  2-Way F GT 150 Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

BU

995

Coolant Temperature Sensor Signal

2

PK

G833

Ground

Ether Solenoid


Object Number: 523630  Size: CH

Connector Part Information

    • 15326801
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

TN

1997

Ether Solenoid - Feed

B

BK

350

Battery Positive Voltage

Fuel Injector 1


Object Number: 523630  Size: CH

Connector Part Information

    • 1928403874
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

GY

A701

Fuel Injector 1 Command

B

WH

L983

Injector Supply Voltage

Fuel Injector 2


Object Number: 523630  Size: CH

Connector Part Information

    • 1928403874
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

PU

A702

Fuel Injector 2 Command

B

WH

L983

Injector Supply Voltage

Fuel Injector 3


Object Number: 523630  Size: CH

Connector Part Information

    • 1928403874
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BN

A703

Fuel Injector 3 Command

B

OG

L984

Injector Supply Voltage

Fuel Injector 4


Object Number: 523630  Size: CH

Connector Part Information

    • 1928403874
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

GN

A704

Fuel Injector 4 Command

B

OG

L984

Injector Supply Voltage

Fuel Injector 5


Object Number: 523630  Size: CH

Connector Part Information

    • 1928403874
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BU

A705

Fuel Injector 5 Command

B

YE

L985

Injector Supply Voltage

Fuel Injector 6


Object Number: 523630  Size: CH

Connector Part Information

    • 1928403874
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

GY

A706

Fuel Injector 6 Command

B

YE

L985

Injector Supply Voltage

High Idle Switch


Object Number: 304345  Size: CH

Connector Part Information

    • 12177195
    • 6-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

BK

750

Ground

B

BK

750

Ground

C

D-GN

534

High Idle Switch Signal

D

BN

985

IA Heater Relay Control

E

BN

2509

Left Rear Park Lamps Supply Voltage

F

BK

750

Ground

Intake Air (IA) Heater


Object Number: 603108  Size: CH

Connector Part Information

    • 15336745
    • 4-Way F GR 280 Series Metri-Pack 800 Sealed (GY)

Pin

Wire Color

Circuit No.

Function

87

RD

2

Battery Positive Voltage

85

PK

539

Battery Positive Voltage

86

BU

G850

Ground

30

RD

C967

Intake Air Temperature Sensor Signal

Intake Air (IA) Heater Relay


Object Number: 603108  Size: CH

Connector Part Information

    • 15336745
    • 4-Way F GR 280 Series Metri-Pack 800 Sealed (GY)

Pin

Wire Color

Circuit No.

Function

87

RD

2

Battery Positive Voltage

85

PK

539

Battery Positive Voltage

86

BU

G850

Ground

30

RD

C967

Intake Air Temperature Sensor Signal

Intake Air Temperature (IAT) Sensor


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    •  2-Way F GT 150 Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

BU

C967

Intake Air Temperature Sensor Signal

2

PK

G833

Ground

Suction Control Valve (SCV)


Object Number: 523630  Size: CH

Connector Part Information

    • 7323-8827-80
    • 2-Way F Yazaki (BN)

Pin

Wire Color

Circuit No.

Function

A

PK

G854

Suction Control Valve Sensor Signal

B

PU

G855

Low Reference

Trans Speed Sensor (Man)


Object Number: 666646  Size: CH

Connector Part Information

    • 15336024
    • 2-Way F GT 150 Sealed (BK)

Pin

Wire Color

Circuit No.

Function

1

L-BU

2221

Signal High - Rear

2

D-GN

2222

Signal Low - Rear

Water in Fuel Sensor


Object Number: 523630  Size: CH

Connector Part Information

    • 15326801
    • 2-Way F GT 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

YE/BK

508

Water In Fuel Indicator Control

B

BK/WH

351

Ground