GM Service Manual Online
For 1990-2009 cars only
Table 1: Auxiliary Power Outlet
Table 2: Cigar Lighter
Table 3: Ignition Switch C1
Table 4: Ignition Switch C2
Table 5: LH IP Junction Block C1
Table 6: LH IP Junction Block C2
Table 7: LH IP Junction Block C3
Table 8: RH IP Junction Block C1
Table 9: RH IP Junction Block C2
Table 10: RH IP Junction Block C3
Table 11: Underhood Junction Block C1 (LD9 Only)
Table 12: Underhood Junction Block C1 (V6 Only)
Table 13: Underhood Junction Block C2
Table 14: Underhood Junction Block C3
Table 15: Underhood Junction Block C4
Table 16: Underhood Junction Block C5
Table 17: Underhood Junction Block C6
Table 18: Underhood Junction Block C7

Auxiliary Power Outlet


Object Number: 287951  Size: CH

Connector Part Information

    • 12176836
    • 3-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

40

Fuse Output, Battery

B

--

--

Not Used

C

BLK

250

Ground

Cigar Lighter


Object Number: 287951  Size: CH

Connector Part Information

    • 12176836
    • 3-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

40

Fuse Output, Battery

B

--

--

Not Used

C

BLK

250

Ground

Ignition Switch C1


Object Number: 258183  Size: CH

Connector Part Information

    • 12110075
    • 6-Way F Metri-Pack Mixed Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

RED

242

Fuse Output, Battery

B

YEL

5

Ignition Switch Output (CRANK)

C

ORN

300

Ignition Switch Output (Ignition 3)

D

LT GRN

80

Key Reminder Switch Signal

E

DK GRN

500

Ignition Switch Output (Ignition 0)

F

--

--

Not Used

Ignition Switch C2


Object Number: 258182  Size: CH

Connector Part Information

    • 12162229
    • 6-Way F Metri-Pack Mixed Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED

842

Fuse Output, Battery

B

PNK

3

Ignition Switch Output (Ignition 1)

C

BRN

4

Ignition Switch Output (ACCY)

D

--

--

Not Used

E

BLK/WHT

151

Power Mirror Motor Ground (Clean)

F

--

--

Not Used

LH IP Junction Block C1


Object Number: 287970  Size: CH

Connector Part Information

    • 12177208
    • 68-Way F Metri-Pack 280 Series (BRN)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

BRN

4

Ignition Switch (ACCY)

A3

PPL

1807

Serial Data Signal, Class B, 10400 Baud (Primary)

A4

PNK

3

Ignition Switch Output (Ignition 1)

A5-A6

--

--

Not Used

A7

DK GRN

500

Ignition Switch Output (Ignition 0)

A8-A11

--

--

Not Used

A12

ORN

1440

Fuse Output, Battery

B1

YEL

43

Fuse Output, ACCY

B2

YEL

143

Fuse Output, ACCY

B3

--

--

Not Used

B4

PNK

739

Fuse Output, Ignition 1

B5

--

--

Not Used

B6

YEL

1139

Fuse Output, Ignition 1, SIR

B7

PPL

1500

Fuse Output, Ignition 0

B8-B10

--

--

Not Used

B11

ORN

1440

Fuse Output, Battery

B12

--

--

Not Used

C1

--

--

Not Used

C2

YEL

143

Fuse Output, ACCY

C3

ORN

1040

Fuse Output, Battery

C4

DK GRN/WHT

817

Vehicle Speed Signal (4000 Pulses per Mile)

C5

RED

442

Fuse Output, Battery

C8

--

--

Not Used

C9

PPL

1600

Fuse Output, Ignition 0

C10-C11

--

--

Not Used

C12

ORN

1140

Fuse Output, Battery

D1

--

--

Not Used

D2

PPL

1807

Serial Data Signal, Class B, 10400 Baud (Primary)

D3

--

--

Not Used

D4

BLK

1576

Trunk Release Switch Output

D5-D12

--

--

Not Used

E1-E2

--

--

Not Used

E3

PPL

1807

Serial Data Signal, Class B, 10400 Baud (Primary)

E4

WHT

156

Courtesy Lamp Output

E5

--

--

Not Used

E6

DK GRN/WHT

817

Vehicle Speed Signal (4000 Pulses per Mile)

E7

ORN

1540

Fuse Output, Battery

E8

--

--

Not Used

E9

ORN

1732

Inadvertent Power Control (12 V)

E10

BLK

150

Ground

E11

--

--

Not Used

E12

RED

642

Fuse Output, Battery

F1-F2

--

--

Not Used

F3

YEL

1737

Transaxle Mounted Neutral Safety Switch Output

F4-F5

--

--

Not Used

F6

DK GRN/WHT

817

Vehicle Speed Signal (4000 Pulses per Mile)

F7-F12

--

--

Not Used

LH IP Junction Block C2


Object Number: 287971  Size: CH

Connector Part Information

    • 12176739
    • 30-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

BLK

470

Sensor Return

A2-A11

--

--

Not Used

A12

LT BLU

1134

Park Brake Switch Signal

B1

GRY

120

Fuel Pump Motor Feed

B2

PPL

30

Fuel Gauge Sensor Signal

B3

--

--

Not Used

B4

LT GRN/BLK

394

Door Handle Switch Signal, Left Front

B5

TAN

201

Speaker Feed, Left Front

B8-B11

--

--

Not Used

B12

PPL

420

Brake Pedal Switch Output (TCC)

C1

PPL

293

Rear Defogger Element Feed

C2

BRN

241

Fuse Output, Ignition 3

C3

WHT

156

Courtesy Lamp Output

C4

DK GRN/WHT

1135

Brake Transaxle Shift Interlock Solenoid Feed

C5

GRY

118

Speaker Return, Left Front

C8

--

--

Not Used

C9

ORN

1732

Inadvertent Power Control (12 V)

C10-C11

--

--

Not Used

C12

LT BLU

1134

Park Brake Switch Signal

LH IP Junction Block C3


Object Number: 287972  Size: CH

Connector Part Information

    • 12176740
    • 30-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

ORN

140

Fuse Output, Battery

A2

GRY

295

Power Door Lock Motor Feed (LOCK)

A3

LT BLU

195

Power Door Lock Motor Feed (UNLOCK)

A4

TAN

294

Power Door Lock Motor Feed (UNLOCK)

A5

WHT

194

Power Door Lock Relay Feed (UNLOCK)

A8

ORN

540

Fuse Output, Battery

A9 (-AUO)

BLK/WHT

56

Trunk Release Motor Feed

A9

GRY

382

Trunk Release Enable Relay Output (Common Contact)

A10

YEL

1737

Transaxle Mounted Neutral Safety Switch Output

A11

ORN

1040

Fuse Output, Battery

A12

BLK/WHT

470

Sensor Return

B1

PPL

420

Brake Pedal Switch Output (TCC)

B2

GRY

295

Power Door Lock Motor Feed (LOCK)

B3

LT BLU

195

Power Door Lock Relay Feed (LOCK)

B4

TAN

294

Power Door Lock Motor Feed (UNLOCK)

B5

WHT

194

Power Door Lock Relay Feed (UNLOCK)

B8

TAN

201

Speaker Feed, Left Front

B9

LT GRN/BLK

394

Door Handle Switch Signal, Left Front

B10

ORN

1840

Fuse Output, Battery

B11

PPL

30

Fuel Gauge Sensor Signal

B12

GRY

120

Fuel Pump Motor Feed

C1

LT BLU

1134

Park Brake Switch Signal

C2

--

--

Not Used

C3

ORN

1732

Inadvertent Power Control (12 V)

C4

ORN

1732

Inadvertent Power Control (12 V)

C5

ORN

1240

Fuse Output, Battery

C8

GRY

118

Speaker Return, Left Front

C9

DK GRN/WHT

1135

Brake Transaxle Shift Interlock Solenoid Feed

C10

WHT

156

Courtesy Lamp Output

C11

BRN

241

Fuse Output, Ignition 3

C12

BLK

293

Rear Defogger Element Feed

RH IP Junction Block C1


Object Number: 287970  Size: CH

Connector Part Information

    • 12177208
    • 68-Way F Metri-Pack 280 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A1

ORN

1740

Fuse Output, Battery

A2

ORN

340

Fuse Output, Battery

A3-A4

--

--

Not Used

A5

BRN

641

Fuse Output, Ignition 3

A6-A12

--

--

Not Used

B1

--

--

Not Used

B2

RED

1042

Fuse Output, Battery

B3

--

--

Not Used

B4

BRN

341

Fuse Output, Ignition 3

B5

--

--

Not Used

B6

BRN

441

Fuse Output, Ignition 3

B7-B12

--

--

Not Used

C1-C3

--

--

Not Used

C4

BRN

341

Fuse Output, Ignition 3

C5

ORN

300

Ignition Switch Output (Ignition 3)

C8-C12

--

--

Not Used

D1-D12

--

--

Not Used

E1

--

--

Not Used

E2

LT BLU

14

Turn Signal Lamp Feed, Left Front

E3

PPL

34

Fog Lamp Feed

E4

PPL

34

Fog Lamp Feed

E5-E10

--

--

Not Used

E11

GRY

8

IP Lamp Feed

E12

BRN/WHT

230

IP Lamps Dimmer Module Output

F1

--

--

Not Used

F2

DK BLU

15

Turn Signal Lamp Feed, Right Front

F3

DK GRN/WHT

1317

Fog Lamp Relay Output

F4

PPL

34

Fog Lamp Feed

F5-F11

--

--

Not Used

F12

GRY

8

IP Lamp Feed

RH IP Junction Block C2


Object Number: 287978  Size: CH

Connector Part Information

    • 12176741
    • 30-Way F Metri-Pack 280 Series (BRN)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

DK BLU

15

Turn Signal Lamp Feed, Right Front

A3

DK GRN

117

Speaker Return, Right Front

A4-A8

--

--

Not Used

A9

BRN

9

Parklamp Feed

A10

--

--

Not Used

A11

LT BLU

20

Stoplamp Feed

A12

GRY

8

IP Lamp Feed

B1

BLK/WHT

238

Seat Belt Switch Signal

B2

LT BLU

14

Turn Signal Lamp Feed, Left Front

B3

DK BLU

46

Speaker Feed, Right Rear

B4

YEL

116

Speaker Return, Left Rear

B5

--

--

Not Used

B8

LT BLU

395

Door Handle Switch Signal, Right Front

B9

BRN

9

Parklamp Feed

B10

--

--

Not Used

B11

LT GRN

24

Backup Lamp Feed

B12

GRY

8

IP Lamp Feed

C1

LT GRN

200

Speaker Feed, Right Front

C2

--

--

Not Used

C3

LT BLU

115

Speaker Return, Right Rear

C4

BRN

199

Speaker Feed, Left Rear

C5

BLK

28

Horn Relay Output

C8

--

--

Not Used

C9

BRN

9

Fuse Output, IP Lamps

C10

BRN

9

Parklamp Feed

C11

--

--

Not Used

C12

GRY

8

IP Lamp Feed

RH IP Junction Block C3


Object Number: 287972  Size: CH

Connector Part Information

    • 12176740
    • 30-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

GRY

8

IP Lamp Feed

A2

LT BLU

20

Stoplamp Feed

A3

--

--

Not Used

A4

BRN

9

Parklamp Feed

A5

--

--

Not Used

A8

BRN

141

Fuse Output, Ignition 3

A9

BRN

341

Fuse Output, Ignition 3

A10

DK GRN

117

Speaker Return, Right Front

A11

DK BLU

15

Turn Signal Lamp Feed, Right Front

A12

BRN

541

Fuse Output, Ignition 3

B1

GRY

8

IP Lamp Feed

B2

LT GRN

24

Backup Lamp Feed

B3

--

--

Not Used

B4

BRN

9

Parklamp Feed

B5

LT BLU/BLK

395

Door Handle Switch Signal, Right Front

B8

--

--

Not Used

B9

YEL

116

Speaker Return, Left Rear

B10

DK BLU

46

Speaker Feed, Right Rear

B11

LT BLU/BLK

14

Turn Signal Lamp Feed, Left Front

B12

BLK/WHT

238

Seat Belt Switch Signal

C1

GRY

8

IP Lamp Feed

C2

LT GRN

24

Backup Lamp Feed

C3

--

--

Not Used

C4

BRN

9

Lamp Feed

C5

LT BLU

395

Door Handle Switch Signal, Right Front

C8

BLK

28

Horn Relay Output

C9

BRN

199

Speaker Feed, Left Rear

C10

LT BLU

115

Speaker Return, Right Rear

C11

--

--

Not Used

C12

LT GRN

200

Speaker Feed, Right Front

Underhood Junction Block C1 (LD9 Only)


Object Number: 73172  Size: CH

Connector Part Information

    • 12161045
    • 68-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

ORN

855

Fuse Output, ABS

A2

DK GRN/WHT

459

A/C Compressor Control Relay Output

A3

PNK

1632

ABS Relay Control

A4

PNK

1039

Fuse Output, Ignition 1

A5

--

--

Not Used

A6

GRY

729

A/C Compressor Clutch Solenoid Output

A7

--

--

Not Used

A8

WHT

121

Tachometer Signal

A9-A10

--

--

Not Used

A11

YEL

5

Ignition Switch Output (CRANK)

A12

LT BLU

20

Stoplamp Feed

B1

ORN

855

Fuse Output, ABS

B2

--

--

Not Used

B3

RED

1633

ABS Relay Output

B4

--

--

Not Used

B5

PNK

139

Fuse Output, Ignition 1

B6

DK GRN

59

A/C Compressor Clutch Solenoid Feed

B7

--

--

Not Used

B8

BLK

450

Ground

B9-B12

--

--

Not Used

C1-C2

--

--

Not Used

C3

DK GRN

83

Cruise Control Signal (Disengage)

C4-C5

--

--

Not Used

C8

PNK

639

Fuse Output, Ignition 1

C9

--

--

Not Used

C10

GRY

532

Coolant Fan Motor Feed (Secondary)

C11

LT BLU/BLK

396

Cruise Control Signal (Engaged)

C12

--

--

Not Used

D1-D2

--

--

Not Used

D3

DK GRN

335

Coolant Fan Relay Output

D4

--

--

Not Used

D5

PNK

239

Fuse Output, Ignition 1

D8-D9

--

--

Not Used

D10

BLK

450

Ground

D11

DK BLU

473

Coolant Fan Relay Output (Secondary)

D12

--

--

Not Used

E1

ORN

1640

Fuse Output, Battery

E2

--

--

Not Used

E3

PPL

420

Brake Pedal Switch Output (TCC)

E4-E5

--

--

Not Used

E6

ORN

480

Fuse Output, Electronic Control Unit

E7

ORN

840

Fuse Output, Battery

E8

DK GRN/WHT

465

Fuel Pump Relay Feed

E9

BRN

241

Fuse Output, Ignition 3

E10-E12

--

--

Not Used

F1-F2

--

--

Not Used

F3

LT BLU

409

Coolant Fan Motor Feed

F4

--

--

Not Used

F5

PNK

539

Fuse Output, Ignition 1

F6-F8

--

--

Not Used

F9

BRN

241

Fuse Output, Ignition 3

F10

--

--

Not Used

F11

WHT

504

Coolant Fan Motor Output

F12

--

--

Not Used

Underhood Junction Block C1 (V6 Only)


Object Number: 73172  Size: CH

Connector Part Information

    • 12161045
    • 68-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

ORN

855

Fuse Output, ABS

A2

DK GRN/WHT

459

A/C Compressor Control Relay Output

A3

PNK

1632

ABS Relay Control

A4

PNK

1039

Fuse Output, Ignition 1

A5

--

--

Not Used

A6

GRY

729

A/C Compressor Clutch Solenoid Output

A7

PNK

839

Fuse Output, Ignition 1

A8-A10

--

--

Not Used

A11

YEL

5

Ignition Switch Output (CRANK)

A12

LT BLU

20

Stoplamp Feed

B1

ORN

855

Fuse Output, ABS

B2

--

--

Not Used

B3

RED

1633

ABS Relay Output

B4

--

--

Not Used

B5

PNK

139

Fuse Output, Ignition 1

B6

DK GRN

59

A/C Compressor Clutch Solenoid Feed

B7

--

--

Not Used

B8

BLK

450

Ground

B9-B11

--

--

Not Used

B12

BLK

450

Ground

C1-C2

--

--

Not Used

C3

DK GRN

83

Cruise Control Signal (Disengage)

C4-C5

--

--

Not Used

C8

PNK

639

Fuse Output, Ignition 1

C9

--

--

Not Used

C10

GRY

532

Coolant Fan Motor Feed (Secondary)

C11

LT BLU/BLK

396

Cruise Control Signal (Engaged)

C12

BLK

450

Ground

D1-D2

--

--

Not Used

D3

DK GRN

335

Coolant Fan Relay Output

D4

--

--

Not Used

D5

PNK

239

Fuse Output, Ignition 1

D8

PNK

639

Fuse Output, Ignition 1

D9

BRN

241

Fuse Output, Ignition 3

D10

BLK

450

Ground

D11

DK BLU

473

Coolant Fan Relay Output (Secondary)

D12

--

--

Not Used

E1

ORN

840

Fuse Output, Battery

E2

BRN

436

AIR Pump Relay Control

E3

PPL

420

Brake Pedal Switch Output (TCC)

E4-E5

--

--

Not Used

E6

ORN

480

Fuse Output, Electronic Control Unit

E7

ORN

1640

Fuse Output, Battery

E8

DK GRN/WHT

465

Fuel Pump Relay Feed

E9

BRN

241

Fuse Output, Ignition 3

E10-E12

--

--

Not Used

F1-F2

--

--

Not Used

F3

LT BLU

409

Coolant Fan Motor Feed

F4

--

--

Not Used

F5

PNK

539

Fuse Output, Ignition 1

F6-F8

--

--

Not Used

F9

BRN

241

Fuse Output, Ignition 3

F10

--

--

Not Used

F11

WHT

504

Coolant Fan Motor Output

F12

--

--

Not Used

Underhood Junction Block C2


Object Number: 73167  Size: CH

Connector Part Information

    • 12161046
    • 68-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

BRN

341

Fuse Output, Ignition 3

A2-A3

--

--

Not Used

A4

ORN

740

Fuse Output, Battery

A5-A9

--

--

Not Used

A10

DK BLU

15

Turn Signal Lamp Feed, Right Front

A11-A12

--

--

Not Used

B1-B4

--

--

Not Used

B5

BRN

9

Parklamp Feed

B6-B9

--

--

Not Used

B10

DK BLU

15

Turn Signal Lamp Feed, Right Front

B11

LT BLU

14

Turn Signal Lamp Feed, Left Front

B12

LT BLU

20

Stoplamp Feed

C1-C3

--

--

Not Used

C4

ORN

740

Fuse Output, Battery

C5

BRN

9

Parklamp Feed

C8-C9

--

--

Not Used

C10

LT BLU

14

Turn Signal Lamp Feed, Left Front

C11

--

--

Not Used

C12

DK GRN

29

Horn Feed

D1-D4

--

--

Not Used

D5

BRN

9

Parklamp Feed

D8-D10

--

--

Not Used

D11

GRY

589

DRL Resistor Feed

D12

--

--

Not Used

E1-E2

--

--

Not Used

E3

RED

78

AIR Pump Motor

E4

DK GRN

83

Cruise Control Signal (Disengage)

E5

BRN

9

Parklamp Feed

E6

PNK

1200

Headlamp Lamp Output (High Beam)

E7

--

--

Not Used

E8

ORN

640

Fuse Output, Battery

E9

LT BLU/BLK

396

Cruise Control Signal (Engaged)

E10-E11

--

--

Not Used

E12

DK BLU

1201

Headlamp Lamp Output (Low Beam)

F1-F3

--

--

Not Used

F4

PPL

420

Brake Pedal Switch Output (TCC)

F5

--

--

Not Used

F6

PNK

1200

Headlamp Lamp Output (High Beam)

F7

--

--

Not Used

F8

ORN

640

Fuse Output, Battery

F9-F11

--

--

Not Used

F12

DK BLU

1201

Headlamp Lamp Output (Low Beam)

Underhood Junction Block C3


Object Number: 73168  Size: CH

Connector Part Information

    • 12161047
    • 68-Way F Metri-Pack 280 Series (BRN)

Pin

Wire Color

Circuit No.

Function

A1

ORN

40

Fuse Output, Battery

A2-A3

--

--

Not Used

A4

PPL

420

Brake Pedal Switch Output (TCC)

A5

--

--

Not Used

A6

ORN

300

Ignition Switch Output (Ignition 3)

A7

BRN

241

Fuse Output, Ignition 3

A8-A9

--

--

Not Used

A10

BLK

150

Ground

A11

BRN

41

Fuse Output, Ignition 3

A12

DK BLU

1201

Headlamp Lamp Output (Low Beam)

B1

--

--

Not Used

B2

WHT

193

Rear Defogger Relay Control

B3

DK GRN

306

Headlamp Switch Output (Headlamps OFF)

B4-B6

--

--

Not Used

B7

PNK

1200

Headlamp Lamp Output (High Beam)

B8

WHT

1080

Parklamp Relay Output

B9

PPL

65

Blower Motor Feed

B10-B11

--

--

Not Used

B12

LT GRN/BLK

592

DRL Relay Output

C1-C3

--

--

Not Used

C4

PNK

439

Fuse Output, Ignition 1

C5

PPL

293

Rear Defogger Element Feed

C8

DK BLU

15

Turn Signal Lamp Feed, Right Front

C9

LT BLU

14

Turn Signal Lamp Feed, Left Front

C10

DK BLU

101

Blower Resistor Output

C11

PNK/WHT

1970

Headlamp Relay Output (Low Beam)

C12

BLK

28

Horn Relay Output

D1

--

--

Not Used

D2

BRN

341

Fuse Output, Ignition 3

D3-D4

--

--

Not Used

D5

PNK

3

Switched Ignition

D8

ORN

240

Fuse Output, Battery

D9

ORN

52

Blower Switch Output (HIGH)

D10-D12

--

--

Not Used

E1-E5

--

--

Not Used

E6

GRY

120

Fuel Pump Motor Feed

E7-F6

--

--

Not Used

F7

BRN

9

Parklamp Feed

F8-F10

--

--

Not Used

F11

YEL

5

Ignition Switch Output (CRANK)

F12

LT BLU

20

Stoplamp Feed

Underhood Junction Block C4


Object Number: 280788  Size: CH

Connector Part Information

    • 12146038
    • 2-Way F Metri-Pack 800 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

842

Fuse Output, Battery

B

RED

242

Fuse Output, Battery

Underhood Junction Block C5


Object Number: 280790  Size: CH

Connector Part Information

    • 12160605
    • 2-Way F Metri-Pack 800 Series (GRN)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

RED

442

Fuse Output, Battery

Underhood Junction Block C6


Object Number: 258677  Size: CH

Connector Part Information

    • 12146037
    • 2-Way F Metri-Pack 800 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

RED

642

Fuse Output, Battery

Underhood Junction Block C7


Object Number: 287983  Size: CH

Connector Part Information

    • 12160606
    • 2-Way F Metri-Pack 800 Series (BRN)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

RED

1042

Fuse Output, Battery