GM Service Manual Online
For 1990-2009 cars only
Table 1: Cigar Lighter
Table 2: Floor Console Accessory Power Receptacle
Table 3: Power Drop Connector
Table 4: Underhood Accessory Wiring Junction Block C1
Table 5: Underhood Accessory Wiring Junction Block C2
Table 6: Underhood Accessory Wiring Junction Block C3
Table 7: Underhood Accessory Wiring Junction Block C4
Table 8: Underhood Accessory Wiring Junction Block C5
Table 9: Underhood Accessory Wiring Junction Block C6

Cigar Lighter


Object Number: 38228  Size: CH

Connector Part Information

    • 12047699
    • 1-Way M SLV & 1 C/LTR Pull to Seat (GRY)

Pin

Wire Color

Circuit No.

Function

A

ORN

440

Fused Output - Battery

B

BLK

1450

Ground

Floor Console Accessory Power Receptacle


Object Number: 258167  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

ORN

440

Fused Output - Battery

B

BLK

150

Ground

Power Drop Connector


Object Number: 68737  Size: CH

Connector Part Information

    • 12129490
    • 3-Way M Metri-Pack 480 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

ORN

440

Fuse Output - Battery

B

PNK

239

Fuse Output - Ignition 1

C

BLK

1450

Ground

Underhood Accessory Wiring Junction Block C1


Object Number: 280784  Size: CH

Connector Part Information

    • 15303513
    • 68 Way F Metri-Pack 280 Series Flex Lock (BLK)

Pin

Wire Color

Circuit No.

Function

A1

DK GRN

35

Hot Engine Coolant Indicator Control

A2

LT GRN

1058

Fuel Pump Resistor Feed (w/RPO L67)

A3

LT GRN

465

Fuel Pump Speed Control (Relay Control) (w/RPO L67)

A4

--

--

Not Used (w/RPO L67)

A2-A4

--

--

Not Used (w/o RPO L67)

A5

DK GRN/WHT

465

Fuel Pump Relay (Coil) Control

A6-A7

--

--

Not Used

A8

ORN

840

Fused Battery Feed

A9

PNK

339

Fused Ignition 1 Feed HO2S

A10

GRY

532

Engine Coolant Fan 1 Return

A11

--

--

Not Used

A12

PNK

639

Fused Ignition Feed

B1

--

--

Not Used (w/RPO L67)

B2

GRY

120

Fuel Pump Feed (w/RPO L67)

B3-B4

--

--

Not Used (w/RPO L67)

B1-B4

--

--

Not Used (w/o RPO L67)

B5

BLK/WHT

451

Oil Indicator Switch Ground

B6

--

--

Not Used

B7

PNK

1339

Fused Ignition 1 Feed

B8

--

--

Not Used

B9

PNK

339

Fuse Ignition 1 Feed

B10

YEL/BLK

68

Low Coolant Indicator Control

B11

--

--

Not Used

B12

PNK

639

Fused Ignition Feed (VIN K & VIN 1)

C1

BRN/WHT

419

MIL Control

C2-3

--

--

Not Used

C4

BLK/WHT

451

PCM & Sensor Ground

C5-9

--

--

Not Used

C10

DK BLU

473

Coolant Fan 2 Relay Control

C11

BLK

1050

Ground

C12

PNK

639

Fused Ignition Feed (VIN K % VIN 1)

D1

--

--

Not Used

D2

ORN/BLK

434

Park/Neutral Input

D3

BRN

436

Air Injection Reaction Pump Motor Relay Output - Coil (w/RPO L67)

D3

--

--

Not Used (w/o RPO L67)

D4

BLK/ WHT

451

PCM & Sensor Ground

D5

BLK/ WHT

451

PCM & Sensor

D8-D9

--

--

Not Used

D10

YEL

772

Transaxle Range (TR) Switch B

D11

PNK

439

Fused Ignition 1 Feed

D12

TAN

31

Engine Oil Pressure Indicator Lamp Feed

E1

PNK

339

Fused Ignition 1 Feed (w/RPO L67)

E1

--

--

Not Used (w/o RPO L67)

E2

ORN

540

Fused Battery Feed

E3

PPL

420

Stoplamp Switch - TCC Control

E4

LT GRN

275

Transaxle Range Switch Feed - PARK

E5

DK GRN

389

Vehicle Speed Signal - 4000 Pulses per Mile

E6

GRY

773

Transaxle Range (TR) Switch C

E7

--

--

Not Used

E8

PNK

1239

Fused Ignition 1 Feed

E9-E11

--

--

Not Used

E12

ORN

2740

Fused Battery Feed

F1

BRN/WHT

1173

Oil Level Indicator Control

F2

WHT

504

Engine Coolant Fan 1 Feed

F3

DK GRN

335

Coolant Fan Relay Output - Coil

F4

WHT

776

Parity Input

F5

BRN

25

Charge Indicator Lamp Feed

F6

WHT

121

Tachometer Signal

F7

DK GRN/WHT

459

A/C Compressor Relay Output (Coil)

F8

DK GRN

59

A/C Compressor Clutch Solenoid Feed

F9

PNK

239

Fused Ignition 1 Feed

F10

DK GRN

135

Engine Coolant Temperature Gauge Input

F11

LT BLU

409

Engine Coolant Fan Motor 2 Feed

F12

BLK/ WHT

771

Transaxle Range (TR) Switch A

Underhood Accessory Wiring Junction Block C2


Object Number: 280786  Size: CH

Connector Part Information

    • 15303514
    • 68 Way F Metri-Pack 280 Series Flex Lock (BRN)

Pin

Wire Color

Circuit No.

Function

A1

BRN/WHT

1173

Oil Level Indicator Control

A2-A3

--

--

Not Used

A4

WHT

776

Parity Input

A5

BRN

25

Charge Indicator Lamp Feed

A6

WHT

121

Tachometer Signal

A7-A9

--

--

Not Used

A10

DK GRN

135

Engine Coolant Temperature Gauge Input

A11

--

--

Not Used

A12

BLK/ WHT

771

Transaxle Range (TR) Switch A

B1-B2

--

--

Not Used

B3

ORN/ BLK

434

Park/Neutral Input

B4

LT GRN

275

Transaxle Range Switch Feed-PARK

B5

GRY

120

Fuel Pump Motor Feed

B6

GRY

773

Transaxle Range (TR) Switch C

B7-B9

--

--

Not Used

B10

YEL

772

Transaxle Range (TR) Switch B

B11-C2

--

--

Not Used

C3

PPL

420

Stoplamp Switch-TCC Control

C4

LT GRN

275

Transaxle Range Switch Feed-PARK

C5-C7

--

--

Not Used

C8

DK GRN

389

Vehicle Speed Signal - 4000 Pulses per Mile

C9

--

--

Not Used

C10

PNK

439

Fused Ignition 1 Feed

C11-D2

--

--

Not Used

D3

DK GRN

35

Engine Coolant Temperature Input

D4

--

--

Not Used

D5

PNK

1339

Fused Ignition 1 Feed

D8-D9

--

--

Not Used

D10

YEL/BLK

68

Low Coolant Indicator Control

D11

TAN

31

Engine Oil Pressure Indicator Lamp Feed

D12

--

--

Not Used

E1

ORN

1340

Fused Battery Feed

E2

--

--

Not Used

E3

BRN/WHT

419

MIL Control

E4

--

--

Not Used

E5

YEL

317

Fog Lamp Relay Feed-Coil

E6

--

--

Not Used

E7

BLK

28

Horn Relay Output-Coil

E8

DK GRN

389

Vehicle Speed Signal - 4000 Pulses Per Mile (w/RPO CJ2)

E8-E10

--

--

Not Used

E11

BLK/ WHT

174

Low Washer Fluid Indicator Lamp Feed

E12-F3

--

--

Not Used

F4

LT GRN

11

Hi Beam Indicator Lamp Feed

F5-F6

--

--

Not Used

F7

ORN

640

Fused Battery Feed

F8

TAN

12

Low Beam Headlamp Feed

F9

LT BLU

14

Turn Signal Lamp Feed-Right Front

F10

DK BLU

15

Turn Signal Lamp Feed-Right Front

F11

BRN

9

Parklamp Feed

F12

RED

228

Windshield Washer Pump Motor Feed

Underhood Accessory Wiring Junction Block C3


Object Number: 280787  Size: CH

Connector Part Information

    • 15303512
    • 68-Way F Metri-Pack 280 Series Flex Lock (GRY)

Pin

Wire Color

Circuit No.

Function

A1

ORN

3040

Fuse Output - Battery

A2-A3

--

--

Not Used

A4

LT GRN

11

High Beam Headlamp Feed

A5

PPL

34

Fog Lamp Feed

A6

--

--

Not Used

A7

DK GRN

29

Horn Feed

A8

TAN

12

Low Beam Headlamp feed

A9

LT BLU

14

Turn Signal Lamp Feed - Left Front

A10

DK BLU

15

Turn Signal Lamp Feed - Right Front

A11

BRN

9

Parklamp Feed

A12

RED

228

Windshield Washer Pump Motor Feed

B1-B3

--

--

Not Used

B4

LT GRN

11

High Beam Headlamp Feed

B5

PPL

34

Fog Lamp Feed

B6-B7

--

--

Not Used

B8

TAN

12

Low Beam Headlamp Feed

B9

LT BLU

14

Turn Signal Lamp Feed - Left Front

B10

DK BLU

15

Turn Signal Lamp Feed - Right Front

B11

BRN

9

Parklamp Feed

C1-C8

--

--

Not Used

C9

PNK

339

Fuse Output - Ignition 1

C10

--

--

Not Used

C11

BRN

9

Parklamp Feed

C12-D8

--

--

Not Used

D9

BRN

436

Air Injection Reaction Pump Motor Relay Output - Coil

D10

--

--

Not Used

D11

BRN

9

Parklamp Feed

D12-E8

--

--

Not Used

E9

PNK

339

Fuse Output - Ignition 1

E10

--

--

Not Used

E11

BLK/WHT

174

Low Windshield Washer Fluid Indicator Lamp Feed

E12-F8

--

--

Not Used

F9

PNK

339

Fuse Output - Ignition 1

F10-F12

--

--

Not Used

Underhood Accessory Wiring Junction Block C4


Object Number: 280788  Size: CH

Connector Part Information

    • 12146038
    • 2-Way F MaxiFuse (GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

242

Fused Battery Feed

B

RED

142

Fused Battery Feed (with RAP)

Underhood Accessory Wiring Junction Block C5


Object Number: 258677  Size: CH

Connector Part Information

    • 12146037
    • 2-Way F MaxiFuse (BLK)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

RED

42

Fused Battery Feed

Underhood Accessory Wiring Junction Block C6


Object Number: 280790  Size: CH

Connector Part Information

    • 12160605
    • 2-Way F MaxiFuse (GRN)

Pin

Wire Color

Circuit No.

Function

A

RED

642

Fused Battery Feed

B

RED

742

Fused Battery Feed