GM Service Manual Online
For 1990-2009 cars only
Table 1: Accessory Power Outlet - Rear
Table 2: Auxiliary Power Outlet Connector
Table 3: Cigar Lighter Connector
Table 4: IP Relay Center Connector
Table 5: IP Fuse Block Connector
Table 6: Rear Fuse Block - Y91
Table 7: Underhood Fuse-Relay Center Connector-Gas
Table 8: Underhood Fuse-Relay Center Connector-Diesel
Table 9: Underhood Fuse-Relay Center Connector-Export
Table 10: Upfitter Provisions Relay Connector

Accessory Power Outlet - Rear


Object Number: 258167  Size: CH

Connector Part Information

    • 12033934
    • 2-Way F Packard 56 Series (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

RED/WHT

1840

Battery Positive Voltage

B

BLK

150

Ground

Auxiliary Power Outlet Connector


Object Number: 258167  Size: CH

Connector Part Information

    • 12033934
    • 2-Way F 56 Series LK Type (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

840

Battery Positive Voltage

B

BLK

150

Ground

Cigar Lighter Connector


Object Number: 38228  Size: CH

Connector Part Information

    • 12047699
    • 1-Way M SLV & 1 C/LTR P25 (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

640

Battery Positive Voltage

B

BLK

150

Ground

IP Relay Center Connector


Object Number: 68798  Size: CH

Connector Part Information

    • 12146836
    • 30-Way F Metri-pack 280 Series Flex Lock (BLK)

Pin

Wire Color

Circuit No.

Function

A1

RED

122

Rear Fog Lamp Supply Voltage

A3

YEL

1977

Rear Fog Lamp Relay Control

A4-A9

--

--

Not Used

B1

YEL

10

Headlamp Switch Signal

B2

--

--

Not Used

B3

ORN

340

Battery Positive Voltage

B4-B6

--

--

Not Used

B7

PPL

16

Turn Signal Flasher Control

B8

LT GRN

62

Hazard Indicator Supply Voltage

B9

LT BLU

1508

Turn/Hazard Module Supply Voltage

C1-C3

--

--

Not Used

C4

ORN

340

Battery Positive Voltage

C5

BRN

9

Park Lamp Supply Voltage

C6

PNK

39

Ignition 1 Voltage

C7

--

--

Not Used

C8

BLK

150

Ground

C9-D3

--

--

Not Used

D4

LT GRN/

BLK

592

DRL Relay Control

D6

PPL

1256

Park Lamp Feed

D7-D9

--

--

Not Used

IP Fuse Block Connector


Object Number: 39797  Size: CH

Connector Part Information

    • 12110746
    • Fuse Block Assembly Metri-pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A2

BRN

4

Accessory Voltage

A3

YEL

343

Accessory Voltage

A6

RED

142

Battery Positive Voltage

A7

ORN

540

Battery Positive Voltage

B2

--

--

Not Used

B4

RED

142

Battery Positive Voltage

B6-B8

--

--

Not Used

C1

ORN

1140

Battery Positive Voltage

C3

ORN

640

Battery Positive Voltage

C5

ORN

840

Battery Positive Voltage

C7

ORN

140

Battery Positive Voltage

D2

WHT

1390

Off/Run/Crank Voltage

D4

GRY

8

Instrument Panel Lamp Supply Voltage - 1

D6

YEL

5

Crank Voltage

D8

RED

142

Battery Positive Voltage

E1

PNK

1020

Off/Run/Crank Voltage

PNK

1020

Off/Run/Crank Voltage

E3

DK GRN

44

Instrument Panel Lamps Dimmer Switch Signal

E5

PPL

806

Crank Voltage

E7

ORN

1440

Battery Positive Voltage

F2

--

--

Not Used

F4

RED

42

Battery Positive Voltage

F6-F8

--

--

Not Used

G1

ORN

1740

Battery Positive Voltage

G3

ORN

340

Battery Positive Voltage

G5

ORN

240

Battery Positive Voltage

G7

ORN

40

Battery Positive Voltage

H2

RED

142

Battery Positive Voltage

H4

--

--

Not Used

H6

PNK

3

Battery Positive Voltage

H8

--

--

Not Used

J1

ORN

1540

Battery Positive Voltage

J3

PNK

139

Ignition 1 Voltage

J5

YEL

1139

Ignition 1 Voltage

J7

PNK

39

Ignition 1 Voltage

K2-K4

--

--

Not Used

K6

BRN

4

Accessory Voltage

K8

RED

142

Battery Positive Voltage

L1

--

--

Not Used

L3

YEL

43

Battery Positive Voltage

L5

YEL

143

Accessory Voltage

L7

ORN

1040

Battery Positive Voltage

M2

--

--

Not Used

M4

ORN

300

Ignition 3 Voltage

M6-M8

--

--

Not Used

N1

BRN

341

Ignition 3 Voltage

N3

BRN

441

Ignition 3 Voltage

N5

BRN

141

Ignition 3 Voltage

N7

BRN

41

Ignition 3 Voltage

BRN

41

Ignition 3 Voltage

Rear Fuse Block - Y91


Object Number: 781216  Size: CH

Connector Part Information

    • 64008
    • 22F Fuseblock

Pin

Wire Color

Circuit No.

Function

1

PPL

34

Front Fog Lamps Supply Voltage

2

RED/WHT

2140

Battery Positive Voltage

3

ORN

192

Front Fog Lamp Switch Signal

4

--

--

Not Used

5

BLK

150

Ground

6

YEL/BLK

1029

Amplifier Supply Voltage

7

YEL

243

Accessory Voltage

8

DK GRN

1001

Amplifier Relay Control

9

--

--

Not Used

10

BLK

150

Ground

11

YEL

243

Accessory Voltage

12

RED/BLK

1042

Battery Positive Voltage

13

RED/WHT

2140

Battery Positive Voltage

14

RED

842

Battery Positive Voltage

15

RED/WHT

2040

Battery Positive Voltage

16

RED

842

Battery Positive Voltage

17-18

--

--

Not Used

19

RED/WHT

1940

Battery Positive Voltage

20

RED

842

Battery Positive Voltage

21

RED/WHT

1840

Battery Positive Voltage

22

RED

842

Battery Positive Voltage

Underhood Fuse-Relay Center Connector-Gas


Object Number: 68800  Size: CH

Connector Part Information

    • 12146281
    • Electrical Center (BLK)

Pin

Wire Color

Circuit No.

Function

A1

TAN/WHT

551

Ground

A3

GRY

120

Fuel Pump Supply Voltage

A4

BLK

150

Ground

A6

RED

242

Battery Positive Voltage

A7-A9

--

--

Not Used

B1

ORN

440

Battery Positive Voltage

B2

--

--

Not Used

B3

DK GRN/

WHT

465

Fuel Pump Relay Control

B4

PPL

6

Starter Solenoid Crank Voltage

B5

--

--

Not Used

B6

YEL

1737

Neutral Safety Switch Park/Neutral Signal

B7-B9

--

--

Not Used

C1

DK GRN/

WHT

459

A/C Clutch Relay Control

C3

ORN

1240

Battery Positive Voltage

C4

BLK

28

Horn Relay Control

C6

ORN

740

Battery Positive Voltage

D1

DK GRN

59

A/C Compressor Clutch Supply Voltage

D2

--

--

Not Used

D3

PNK

639

Ignition 1 Voltage

D4

DK GRN

29

Horn Control

D5

--

--

Not Used

D6

ORN

740

Battery Positive Voltage

D7

BRN

436

AIR Pump Relay Control - w/K18

D9

RED

842

Battery Positive Voltage - w/K18

E7

RED

78

AIR Pump Supply Voltage - w/K18

E8

--

--

Not Used

E9

PNK

539

Ignition 1 Voltage - w/K18

F1-G6

--

--

Not Used

G8

PNK

639

Ignition 1 Voltage

G10

--

--

Not Used

G12

ORN

440

Battery Positive Voltage

H1-H3

--

--

Not Used

H5

RED

542

Battery Positive Voltage

H7

PNK

3

Battery Positive Voltage

H9

--

--

Not Used

H11

RED

2

Battery Positive Voltage

J6

RED

1542

Battery Positive Voltage

J8

PNK

439

Ignition 1 Voltage

J10

--

--

Not Used

J12

ORN

740

Battery Positive Voltage

K1

PPL

680

ABS Pressure Differential Sensor Signal

K3

DK GRN

59

A/C Compressor Clutch Supply Voltage

DK GRN

59

A/C Compressor Clutch Supply Voltage

K5

PNK

3

Ignition 1 Voltage

K7-K11

--

--

Not Used

L2

TAN/WHT

33

Brake Warning Indicator Control

L4

BLK

150

Ground

L6

PNK

1339

Ignition 1 Voltage

PNK

1339

Ignition 1 Voltage

L8

PNK

539

Ignition 1 Voltage

L10

--

--

Not Used

L12

ORN

1240

Battery Positive Voltage

M1-M2

--

--

Not Used

M3

RED

542

Battery Positive Voltage

RED

542

Battery Positive Voltage

M4

RED

442

Battery Positive Voltage

M5

RED

342

Battery Positive Voltage

M6

RED

242

Battery Positive Voltage

RED

242

Battery Positive Voltage

M7

RED

142

Battery Positive Voltage

M8

RED

42

Battery Positive Voltage

N1-N8

--

--

Not Used

Underhood Fuse-Relay Center Connector-Diesel


Object Number: 68800  Size: CH

Connector Part Information

    • 12146281
    • Electrical Center (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK/WHT

451

Ground

A3

GRY

120

Fuel Pump Supply Voltage

A4

BLK

150

Ground

A6

RED

242

Battery Positive Voltage

A7-A9

--

--

Not Used

B1

ORN

440

Battery Positive Voltage

B2

--

--

Not Used

B3

DK GRN/

WHT

465

Fuel Pump Relay Control

B4

PPL

6

Starter Solenoid Crank Voltage

B5

--

--

Not Used

B6

YEL

1737

Neutral Safety Switch Park/Neutral Signal

B7-B9

--

--

Not Used

C1

DK GRN/

WHT

459

A/C Clutch Relay Control

C3

ORN

1240

Battery Positive Voltage

C4

BLK

28

Horn Relay Control

C6

ORN

740

Battery Positive Voltage

D1

DK GRN

59

A/C Compressor Clutch Supply Voltage

D2

--

--

Not Used

D3

PNK

639

Ignition 1 Voltage

D4

DK GRN

29

Horn Control

D5

--

--

Not Used

D6

ORN

740

Battery Positive Voltage

D7-G6

--

--

Not Used

G8

PNK

639

Ignition 1 Voltage

G10

--

--

Not Used

G12

ORN

440

Battery Positive Voltage

H1-H3

--

--

Not Used

H5

RED

542

Battery Positive Voltage

H7-H9

--

--

Not Used

H11

RED

2

Battery Positive Voltage

J2-J4

--

--

Not Used

J6

RED

1542

Battery Positive Voltage

J8

PNK

339

Ignition 1 Voltage

J10

--

--

Not Used

J12

ORN

740

Battery Positive Voltage

K1

PPL

680

ABS Pressure Differential Sensor Signal

K3

DK GRN

59

A/C Compressor Clutch Supply Voltage

DK GRN

59

A/C Compressor Clutch Supply Voltage

K5

--

--

Not Used

K7

PNK

3

Battery Positive Voltage

K9-K11

--

--

Not Used

L2

TAN/WHT

33

Brake Warning Indicator Control

L4

BLK

150

Ground

L6

--

--

Not Used

L8

PNK

539

Ignition 1 Voltage

L10

--

--

Not Used

L12

ORN

1240

Battery Positive Voltage

M1-M2

--

--

Not Used

M3

RED

542

Battery Positive Voltage

M4

RED

442

Battery Positive Voltage

M5

RED

342

Battery Positive Voltage

M6

RED

242

Battery Positive Voltage

M7

RED

142

Battery Positive Voltage

M8

RED

42

Battery Positive Voltage

N1-N8

--

--

Not Used

Underhood Fuse-Relay Center Connector-Export


Object Number: 68800  Size: CH

Connector Part Information

    • 12146281
    • Electrical Center (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BLK/WHT

451

Ground

A3

GRY

120

Fuel Pump Supply Voltage

A4

BLK

150

Ground

A6

RED

242

Battery Positive Voltage

A7

BLK/WHT

451

Ground

A9

LT GRN

867

ABS Indicator Failure Control

LT GRN

867

ABS Indicator Failure Control

B1

ORN

440

Battery Positive Voltage

B2

--

--

Not Used

B3

DK GRN/

WHT

465

Fuel Pump Relay Control - Primary

B4

PPL

6

Starter Solenoid Crank Voltage

B5

--

--

Not Used

B6

YEL

1737

Neutral Safety Switch Park/Neutral Signal

B7

--

--

Not Used

B8

BLK

150

Ground

B9

BRN

441

Ignition 3 Voltage

C1

DK GRN/

WHT

459

A/C Clutch Relay Control

C3

ORN

1240

Battery Positive Voltage

C4

BLK

28

Horn Relay Control

C6

ORN

740

Battery Positive Voltage

D1

DK GRN

59

A/C Compressor Clutch Supply Voltage

D2

--

--

Not Used

D3

PNK

639

Ignition 1 Voltage

D4

DK GRN

29

Horn Control

D5

--

--

Not Used

D6

ORN

740

Battery Positive Voltage

D7-E9

--

--

Not Used

F1

TAN

12

Headlamp Low Beam Supply Voltage

F3

LT GRN

11

Headlamp High Beam Supply Voltage

F5-F11

--

--

Not Used

G2

TAN

12

Headlamp Low Beam Supply Voltage

G4

LT GRN

11

Headlamp High Beam Supply Voltage

G6

--

--

Not Used

G8

PNK

639

Ignition 1 Voltage

G10

--

--

Not Used

G12

ORN

440

Battery Positive Voltage

H1-H3

--

--

Not Used

H5

RED

542

Battery Positive Voltage

H7

PNK

3

Battery Positive Voltage

H9

--

--

Not Used

H11

RED

2

Battery Positive Voltage

J2

TAN

12

Headlamp Low Beam Supply Voltage

J4

LT GRN

11

Headlamp High Beam Supply Voltage

J6

RED

1542

Battery Positive Voltage

J8

PNK

439

Ignition 1 Voltage

J10

--

--

Not Used

J12

ORN

740

Battery Positive Voltage

K1

PPL

680

ABS Pressure Differential Sensor Signal

K3

DK GRN

59

A/C Compressor Clutch Supply Voltage

DK GRN

59

A/C Compressor Clutch Supply Voltage

K5-K11

--

--

Not Used

L2

TAN/WHT

33

Brake Warning Indicator Control

L4

BLK

150

Ground

L6

--

--

Not Used

L8

PNK

539

Ignition 1 Voltage

L10

--

--

Not Used

L12

ORN

1240

Battery Positive Voltage

M1-M2

--

--

Not Used

M3

RED

542

Battery Positive Voltage

M4

RED

442

Battery Positive Voltage

M5

RED

342

Battery Positive Voltage

M6

RED

242

Battery Positive Voltage

M7

RED

142

Battery Positive Voltage

M8

RED

42

Battery Positive Voltage

N1-N8

--

--

Not Used

Upfitter Provisions Relay Connector


Object Number: 68749  Size: CH

Connector Part Information

    • 12124169
    • 4-Way F Mixed Series (BLK)

Pin

Wire Color

Circuit No.

Function

30

RED

1042

Battery Positive Voltage

85

BLK

150

Ground

86

YEL

43

Accessory Voltage

87

RED

1042

Battery Positive Voltage