GM Service Manual Online
For 1990-2009 cars only

CAM Position Sensor (L81) -- Front Top Right Engine


Object Number: 886455  Size: CH

Connector Part Information

    • 15326597
    • Black

Pin

Wire Color

Circuit Number

Function

1

PPL/WHT

652

5V REF Return Splice Pack

2

BRN/WHT

633

ECM

3

GRY

416

5V REF Splice Pack

Canister Purge Solenoid (L81) -- Engine Compartment - Rear


Object Number: 886419  Size: CH

Connector Part Information

    • 12186308
    • Black

Pin

Wire Color

Circuit Number

Function

1

ORN

2440

UHFB

2

DK GRN/WHT

428

ECM

Crank Position Sensor (L81) -- Lower Front Engine


Object Number: 886455  Size: CH

Connector Part Information

    • 15326597
    • Black

Pin

Wire Color

Circuit Number

Function

1

PPL

574

ECM

2

YEL

573

ECM

3

--

--

Not Used

Engine Control Module (Engine J1) (L81) -- Top Left Engine


Object Number: 889811  Size: CH

Connector Part Information

    • 12186703
    • Black

Pin

Wire Color

Circuit Number

Function

1

YEL

581

UHFB

2

BLK/WHT

51

HO2S Bank 1 Sensor 2

3

PNK/BLK

1746

Injector Inline

4

LT BLU

1110

Variable Intake Manifold

5

DK GRN/WHT

428

EVAP Purge Solenoid

6

BLK

452

Knock Sensor (Cylinder 2, 4, 6)

7

GRY

1981

HO2S Bank 1 Sensor 2

8

BRN

1456

EGR

9

--

--

Not Used

10

PPL

574

Crankshaft Position

11

PPL/WHT

1665

HO2S Bank 1 Sensor 1

12

GRY

197

HO2S Bank 2 Sensor 1

13

GRY/BLK

433

--

14

YEL

1157

Electronic Ignition Module

15

PNK

1155

Electronic Ignition Module

16

LT BLU

1153

Electronic Ignition Module

17

BRN

582

UHFB

18

TAN/WHT

551

HO2S Bank 2 Sensor 1

19

BLK

1744

Injector Inline

20

BLK/WHT

845

Injector Inline

21

BLK/WHT

251

UHFB

22

DK BLU

496

Knock Sensor (Cylinder 1, 3, 5)

23

PPL/WHT

1668

HO2S Bank 2 Sensor 2

24

YEL/BLK

487

Throttle Control Module

25

YEL

410

Injector Inline

26

PPL/WHT

652

REF Return Inline

27

--

--

Not Used

28

PPL

412

Heated O2 Bank 1 Sensor 1

29

TAN

1664

HO2S Bank 2 Sensor 1

30

TAN

1158

Electronic Ignition Module

31

PPL

1156

Electronic Ignition Module

32

DK BLU

1154

Electronic Ignition Module

33

YEL

581

UHFB

34

BLK/WHT

151

HO2S Bank 2 Sensor 2

35

LT GRN/BLK

1745

Injector Inline

36

YEL/BLK

846

Injector Inline

37

BLK/WHT

251

UHFB

38

LT BLU

1876

Knock Sensor (Cylinder 2, 4, 6)

39

TAN

1671

HO2S Bank 1 Sensor 2

40

DK GRN

485

Throttle Control Module

41

GRY

1954

Manifold Absolute Pressure Sensor

42

BRN/WHT

633

Camshaft Position Sensor

43

TAN

1667

HO2S Bank 1 Sensor 1

44

TAN/WHT

1653

HO2S Bank 2 Sensor 1

45-48

--

--

Not Used

49

BRN

582

UHFB

50

BLK/WHT

751

HO2S Bank 1 Sensor 1

51

GRY

416

5V REF Splice

52

LT BLU/BLK

844

Injector Inline

53

--

--

Not Used

54

YEL/BLK

457

Knock Sensor (Cylinder 1, 3, 5)

55

TAN/WHT

1669

HO2S Bank 2 Sensor 2

56

YEL

492

Mass Air Flow Sensor

57

TAN

472

Mass Air Flow Sensor

58

PPL

486

Throttle Control Module

59

YEL

573

Crankshaft Position Sensor

60

TAN

413

HO2S Bank 1 Sensor 1

61

PPL

1666

HO2S Bank 2 Sensor 1

62

BLK/WHT

451

Shield Cable Ground Splice

63-64

--

--

Not Used

Engine Control Module (I/P J2) (L81) -- Top Left Engine


Object Number: 889829  Size: CH

Connector Part Information

    • 12186705
    • Black

Pin

Wire Color

Circuit Number

Function

1

DK BLU

473

UHFB

2-6

--

--

Not Used

7

TAN

1274

Pedal Position Sensor

8

DK BLU

1161

Pedal Position Sensor

9

TAN/BLK

231

Engine to I/P Inline

10

GRY

397

Horn/Cruise Switch

11

RED

225

Engine to I/P Inline

12

TAN

2501

BCM

13

BLK/WHT

351

UHFB

14

--

--

Not Used

15

ORN

480

UHFB

16

ORN

2740

UHFB

17

--

--

Not Used

18

WHT

1310

LIPFB

19-20

--

--

Not Used

21

RED/BLK

380

Engine to I/P Inline

22-23

--

--

Not Used

24

BRN

1271

Pedal Position Sensor

25

BLK

2759

LIPFB

26

BRN

86

Brake/Cruise Switch

27

LT BLU

20

LIPFB

28

ORN/BLU

463

EBTCM

29

TAN/WHT

2500

BCM

30

LT GRN

497

LIPFB

31

WHT

2561

UHFB

32

ORN

2740

UHFB

33-34

--

--

Not Used

35

WHT

121

EBTCM

36

--

--

Not Used

37

DK GRN

890

Body to I/P Inline

38

PPL

30

LIPFB

39

--

--

Not Used

40

LT BLU

1162

Pedal Position Sensor

41

--

--

Not Used

42

GRY/BLK

87

Horn/Cruise switch

43

DK BLU

84

Horn/Cruise Switch

44

WHT

1909

Wheel Speed Sensor Conditioner (w/o ABS) EBTCM (with ABS)

45

TAN/WHT

2500

Engine to I/P Inline

46

--

--

Not Used

47

PNK

339

UHFB

48

ORN

2740

UHFB

49

--

--

Not Used

50

DK GRN

335

UHFB

51

--

--

Not Used

52

TAN/BLK

404

EBTCM

53

PPL

1319

LIPFB

54-55

--

--

Not Used

56

WHT/BLK

1164

Pedal Position Sensor

57-60

--

--

Not Used

61

TAN

2501

Engine to I/P Inline

62

--

--

Not Used

63

GRY

2709

Body to I/P Inline

64

--

--

Not Used

EGR Pressure sensor (L81) -- Engine Compartment - Top Right Rear


Object Number: 886455  Size: CH

Connector Part Information

    • 15326597
    • Black

Pin

Wire Color

Circuit Number

Function

1

GRY

416

5V REF Splice Pack

2

PPL/WHT

652

Ground Splice Pack

3

GRY

1954

ECM

EGR Solenoid (L81) -- Top Left Engine


Object Number: 886684  Size: CH

Connector Part Information

    • 12162826
    • Black

Pin

Wire Color

Circuit Number

Function

A

BLK/WHT

251

UHFB

B

PPL/WHT

652

Return Splice Pack

C

BRN

1456

ECM

D

GRY

416

5V REF Splice Pack

E

ORN

2440

UHFB

EVAP Solenoid -- Fuel Tank


Object Number: 884567  Size: CH

Connector Part Information

    • 12052643
    • Red

Pin

Wire Color

Circuit Number

Function

A

ORN

2740

EVAP Solenoid Inline

B

WHT

1310

EVAP Solenoid Inline

Fuel Tank - Jumper -- Suspension - Mid-Rear


Object Number: 890333  Size: CH

Connector Part Information

    • 15326840
    • Black

Pin

Wire Color

Circuit Number

Function

A

GRY

120

Fuel Pump

B

BLK

650

Fuel Pump

C

BLK

2759

Fuel Pressure Sensor

D

--

--

Not Used

E

DK GRN

890

Fuel Pressure Sensor

F

GRY

2709

Fuel Pressure Sensor

G

BLK

2759

Fuel Pump

H

PPL

30

Fuel Pump

Fuel Tank Pressure Sensor -- Fuel Tank


Object Number: 890168  Size: CH

Connector Part Information

    • 15318087
    • Black

Pin

Wire Color

Circuit Number

Function

1

GRY

2709

Fuel Tank Inline

2

BLK

2759

Fuel Tank Inline

3

DK GRN

890

Fuel Tank Inline

Heated Oxygen Sensor Bank 1 Sensor 1 (L81) -- Engine Compartment - Front


Object Number: 886469  Size: CH

Connector Part Information

    • 15358613
    • Black

Pin

Wire Color

Circuit Number

Function

1

PPL/WHT

1665

ECM

2

PPL

412

ECM

3

TAN

413

ECM

4

BLK/WHT

751

ECM

5

ORN

2740

UHFB

6

TAN

1667

ECM

Heated Oxygen Sensor Bank 2 Sensor 1 (L81) -- Engine Compartment - Front


Object Number: 886469  Size: CH

Connector Part Information

    • 15358613
    • Black

Pin

Wire Color

Circuit Number

Function

1

PPL

1666

ECM

2

TAN/WHT

1653

ECM

3

GRY

1979

ECM

4

TAN/WHT

551

ECM

5

ORN

2440

UHFB

6

TAN

1664

ECM

Heated Oxygen Sensor Bank 2 Sensor 2 (L81) -- Engine Compartment - Rear


Object Number: 890194  Size: CH

Connector Part Information

    • 15354677
    • Black

Pin

Wire Color

Circuit Number

Function

1

ORN

2740

UHFB

2

BLK/WHT

51

ECM

3

GRY

1981

ECM

4

TAN

1671

ECM

Heated Oxygen Sensor Bank 1 Sensor 2 (L81) -- Engine Compartment - Rear


Object Number: 890194  Size: CH

Connector Part Information

    • 15318091
    • Black

Pin

Wire Color

Circuit Number

Function

1

ORN

2440

UHFB

2

BLK/WHT

151

ECM

3

TAN/WHT

1669

ECM

4

PPL/WHT

1668

ECM

Ignition Coil Cylinders 1, 3, and 5 (L81) -- Engine Compartment - Top Left


Object Number: 889836  Size: CH

Connector Part Information

    • 12186712
    • Black

Pin

Wire Color

Circuit Number

Function

1

BLK

250

Engine Ground

2

PNK

1539

UHFB

3

YEL

1157

ECM

4

PNK

1155

ECM

5

LT BLU

1153

ECM

6

--

--

Not Used

Ignition Coil Cylinders 2, 4, and 6 (L81) -- Engine Compartment - Top Left


Object Number: 890542  Size: CH

Connector Part Information

    • 15336396
    • Gray

Pin

Wire Color

Circuit Number

Function

1

BLK

250

Engine Ground

2

PNK

1539

UHFB

3

TAN

1158

ECM

4

PPL

1156

ECM

5

DK BLU

1154

ECM

6

--

--

Not Used

Ignition Switch #1 -- Steering Column


Object Number: 1972594  Size: CH

Connector Part Information

    • 12162229
    • Natural

Pin

Wire Color

Circuit Number

Function

A

RED

102

UHFB

B

BRN

4

LIPFB

C

RED

302

UHFB

D-E

--

--

Not Used

F

LT GRN

80

BCM

Ignition Switch #2 -- Steering Column


Object Number: 1972594  Size: CH

Connector Part Information

    • 12129842
    • Black

Pin

Wire Color

Circuit Number

Function

A

PNK

3

UHFB

B

ORN

300

LIPFB

C

YEL

5

I/P Inline/Clutch Start Switch

D

DK GRN

500

UHFB

E

--

--

Not Used

F

BLK

550

LIPFB

Intake Plenum Switchover Solenoid (L81) -- Engine Compartment - Top Left


Object Number: 885051  Size: CH

Connector Part Information

    • 12084126
    • Black

Pin

Wire Color

Circuit Number

Function

A

LT BLU

1110

ECM

B

ORN

2640

UHFB

Knock Sensor Cylinders 1, 3, and 5 (L81) -- Engine Compartment - Top Right Front


Object Number: 886419  Size: CH

Connector Part Information

    • 12186308
    • Black

Pin

Wire Color

Circuit Number

Function

1

DK BLU

496

ECM

2

YEL/BLK

457

ECM

Knock Sensor Cylinders 2, 4, and 6 (L81) -- Engine Compartment - Top Right Front


Object Number: 886419  Size: CH

Connector Part Information

    • 12186308
    • Black

Pin

Wire Color

Circuit Number

Function

1

LT BLU

1876

ECM

2

BLK

452

ECM

Mass Air Flow (L81) -- Engine Compartment - Right Side


Object Number: 888067  Size: CH

Connector Part Information

    • 12186307
    • Black

Pin

Wire Color

Circuit Number

Function

1

TAN

472

ECM

2

ORN

2440

UHFB

3

PPL/WHT

652

Ground Splice Pack

4

GRY

416

5V REF Splice Pack

5

YEL

492

ECM

Oil Pressure Sensor (L81) -- Lower Front Engine


Object Number: 888049  Size: CH

Connector Part Information

    • 12176800
    • Gray

Pin

Wire Color

Circuit Number

Function

A

BLU

231

ECM

Park Neutral Position Switch #1 -- Top of Transmission


Object Number: 887996  Size: CH

Connector Part Information

    • 12129840
    • Gray

Pin

Wire Color

Circuit Number

Function

A

--

--

Not Used

B

PNK

239

Ignition

C

--

--

Not Used

D

BLK/WHT

451

Ground (L61)

PPL

1500

Ignition 0 Fuse (L81)

E

PPL

6

Starter Solenoid

F

LT GRN

24

Tail Lamp

G

YEL

5

Ignition Switch

Park Neutral Position Switch #2 -- Top of Transmission


Object Number: 889863  Size: CH

Connector Part Information

    • 12191757
    • Natural

Pin

Wire Color

Circuit Number

Function

A

WHT

776

PCM/Electronic PRNDL Module

B

YEL

772

PCM/Electronic PRNDL Module

C

GRY

773

PCM/Electronic PRNDL Module

D

BLK/WHT

771

PCM/Electronic PRNDL Module

Pedal Position Sensor (L81) -- Accelerator Pedal


Object Number: 890546  Size: CH

Connector Part Information

    • 15336766
    • Blue

Pin

Wire Color

Circuit Number

Function

1

LT BLU

1162

ECM

2

BRN

1271

ECM

3

--

--

Not Used

4

WHT/BLK

1164

ECM

5

DK BLU

1161

--

6

BLK

2759

LIPFB

7

--

--

Not Used

8

TAN

1274

ECM

9

--

--

Not Used

Rear Heated O2 Sensor Bank 2 Sensor 2 (L81) -- Rear Engine


Object Number: 890194  Size: CH

Connector Part Information

    • 15354677
    • Black

Pin

Wire Color

Circuit Number

Function

1

ORN

2440

UHFB

2

BLK/WHT

151

ECM

3

TAN/WHT

1669

ECM

4

PPL/WHT

1668

ECM

Throttle Position Sensor (L81) -- Engine Compartment - Right Top Front


Object Number: 886441  Size: CH

Connector Part Information

    • 15355474
    • Black

Pin

Wire Color

Circuit Number

Function

1

YEL

581

UHFB

2

PPL/WHT

652

Ground Splice Pack

3

PPL

486

ECM

4

BRN

582

UHFB

5

DK GRN

485

ECM

6

YEL/BLK

487

ECM

Wheel Speed Sensor Signal Conditioner Module -- Base of Steering Column (Taped to the Harness)


Object Number: 887468  Size: CH

Connector Part Information

    • 12033871
    • Black

Pin

Wire Color

Circuit Number

Function

1

BLK

550

LIPFB

2

WHT

1909

ECM (L81) PCM (L61)

3

TAN

833

EBTCM

4

DK GRN

872

EBTCM

5

BRN

641

LIPFB

Wheel Speed Sensor - Left Front -- Front Wheel - Left


Object Number: 890559  Size: CH

Connector Part Information

    • 15358647
    • Black

Pin

Wire Color

Circuit Number

Function

1

YEL

873

EBTCM

2

LT BLU

830

EBTCM

Wheel Speed Sensor - Left Rear -- Rear Wheel - Left


Object Number: 884159  Size: CH

Connector Part Information

    • 12052644
    • Gray

Pin

Wire Color

Circuit Number

Function

A

BLK

884

EBTCM Inline

B

RED

885

EBTCM Inline

Wheel Speed Sensor - Right Front -- Front Wheel - Right


Object Number: 890559  Size: CH

Connector Part Information

    • 15358647
    • Black

Pin

Wire Color

Circuit Number

Function

1

TAN

833

EBTCM

2

DK GRN

872

EBTCM

Wheel Speed Sensor - Right Rear -- Rear Wheel


Object Number: 884159  Size: CH

Connector Part Information

    • 12052644
    • Gray

Pin

Wire Color

Circuit Number

Function

A

BRN

882

EBTCM Inline

B

WHT

883

EBTCM Inline