GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Relay Block
Table 2: IP Fuse Block
Table 3: Underhood Fuse Block (UFB ) - C1
Table 4: Underhood Fuse Block (UFB) - C2
Table 5: Underhood Fuse Block (UFB) - C3
Table 6: Underhood Fuse Block (UFB) - C4
Table 7: Underhood Fuse Block (UFB) - C5
Table 8: Underhood Fuse Block (UFB) - C6

Body Relay Block


Object Number: 365994  Size: CH

Connector Part Information

    • 12193905
    • 68-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1-A3

--

--

Not Used

A4

ORN

40

Fused Output Battery

A5

ORN

40

Fused Output Battery

A6-A10

--

--

Not Used

A11

WHT

1080

Park Lamp Relay

A12-B3

--

--

Not Used

B4

BLK/WHT

451

PCM Ground

B5

BLK/WHT

451

HTCM Ground

B6

BLK/WHT

451

PCM Ground

B7

BLK/WHT

451

HTCM Ground

B8-C3

--

--

Not Used

C4

DK BLU

1393

Inadvertent Power

C5

ORN

1732

Interior Lamp Request

C6-C7

--

--

Not Used

C8

BLK

1850

TBC Ground

C9

--

--

Not Used

C10

ORN

240

Fused Output Battery

C11

LT BLU

74

Park Lamp Switch Output

C12-D1

--

--

Not Used

D2

BRN

4

Ignition Switch Output Accessory

D3

--

--

Not Used

D4

WHT

156

Courtesy Lamp Output

D5-D12

--

--

Not Used

E1

RED

542

Battery Fused

E2

BLK

755

RAP Relay

E3

BRN

4

Ignition Switch Output Accessory

E4

WHT

156

Courtesy Lamp Output

E5

ORN

1732

Interior Lamp Request

E6-F2

--

--

Not Used

F3

DK BLU

75

Delayed Accessory Bus Relay Output Common Contact Accessory

F4

GRY/BLK

690

Courtesy Lamp Relay

F5-F12

--

--

Not Used

IP Fuse Block


Object Number: 39797  Size: CH

Connector Part Information

    • 12110746
    • 52-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A2-A7

--

--

Not Used

B2

RED

642

Fused Output Battery

B4-B8

--

--

Not Used

C1

ORN

340

Fused Output Battery

C3

ORN

1040

12 Volt Regulated

C5

ORN

840

Fused Output Battery

C7

ORN

1940

Fused Output Battery

D2

RED

642

Fused Output Battery

D4-E1

--

--

Not Used

E3

ORN

1740

Fused Output Battery

E5

ORN

40

Fused Output Battery

E7

ORN

640

Fused Output Battery

F2

ORN

300

Ignition

F4-G3

--

--

Not Used

G5

BRN

141

Fused Output Ignition 3

G7

BRN

41

IGN 3

H2

ORN

300

Ignition

H4-H6

--

--

Not Used

H8

PNK

3

Ignition Switch Output Ignition 1

J1

BRN

441

Fused Output Ignition 3

J3

YEL

1139

Fused Output Ignition 1

J5

PNK

139

Fused Output Ignition 1

J7

PNK

39

IGN 1

K2

BRN

4

Ignition Switch Output Accessory

K4

--

--

Not Used

K6

WHT

1390

Ignition Switch Output OFF/RUN/CRANK

K8

DK GRN

44

IP Lamps Dimmer Output

L1

--

--

Not Used

L3

YEL

143

Fused Output Accessory

L5

PNK

1020

Run 1

L7

GRY

1220

Dimming Pot

M2

DK BLU

75

Delayed Accessory Bus Relay Output Common Contact Accessory

M4

RED

642

Fused Output Battery

M6

LT BLU

74

Park Lamp Switch Output

M8

--

--

Not Used

N1

DK GRN

1301

Fused Output Retained Accessory Power

N3

ORN

1840

Fused Output Battery

N5

BRN

2409

Park Lamps

N7

--

--

Not Used

Underhood Fuse Block (UFB ) - C1


Object Number: 365994  Size: CH

Connector Part Information

    • 12193905
    • 68-Way F Metri-Pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

ORN

740

Fused Output Battery

A3

PPL

524

High Beam

A4

LT BLU

74

Park Lamp Switch Output

A5

--

--

Not Used

A6

LT GRN/BLK

592

DRL Relay

A7

BLK

350

Ground

A8

--

--

Not Used

A9

PNK

3

Ignition Switch Output Ignition 1

A10

BRN

541

Fused Output Ignition 3

A11-A12

--

--

Not Used

B1

YEL/BLK

895

CHMSL Relay Output Common Contact

B2-B5

--

--

Not Used

B6

YEL

10

Headlamp Switch Output

B7

BLK

350

Ground

B8-B10

--

--

Not Used

B11

RED

242

Fused Output Battery

B12

ORN

240

Fused Output Battery

C1-C4

--

--

Not Used

C5

WHT

352

Headlamp Relay

C6-C8

--

--

Not Used

C9

--

--

Not Used (Except Envoy)

C9

ORN

1640

Fused Output Battery

C10

DK GRN/WHT

1419

Turn Signal Switch Output Rear

C11-D8

--

--

Not Used

D9

PNK

639

Fused Output Ignition 1

D10

--

--

Not Used

D11

WHT

17

Stop Lamp Switch Output

D12

ORN

540

Fused Output Battery

E1

ORN

1140

Battery Power

E2

ORN

140

Fused Output Battery

E3

BLK

28

Horn Relay

E4-E6

--

--

Not Used

E7

BLK/WHT

451

EBCM / A/C Low Pressure

E8

BLK/WHT

451

HTCM / A/C High Pressure / IP

E9-F3

--

--

Not Used

F4

DK BLU/WHT

1415

RF Turn Signal

F5

LT BLU/WHT

1414

LF Turn Signal

F6

--

--

Not Used

F7

YEL

525

Headlamp Switch Output Low Beam

F8-F9

--

--

Not Used

F10

YEL/BLK

1418

Turn Signal Switch Output Rear

F11

LT BLU

1320

Fused Output CHMSL

F12

ORN

1540

Fused Output Battery

Underhood Fuse Block (UFB) - C2


Object Number: 362761  Size: CH

Connector Part Information

    • 12193906
    • 68-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1-A5

--

--

Not Used

A6

BRN

250

Ground

A7

BRN

241

Fused Output Ignition 3

A8-B2

--

--

Not Used

B3

DK BLU/WHT

925

FFH Relay - A/C

B4

TAN

913

IGN E - FFH Relay

B5-B8

--

--

Not Used

B9

PNK

239

Fused Output Ignition 1

B10

--

--

Not Used

B11

GRY

1524

Backup Lamp Feed

B12-E6

--

--

Not Used

E7

BLK/WHT

451

HTCM/IP

E8-F6

--

--

Not Used

F7

BLK

250

Ground

F8-F12

--

--

Not Used

Underhood Fuse Block (UFB) - C3


Object Number: 362759  Size: CH

Connector Part Information

    • 12193916
    • 32-Way F Metri-Pack 280 Series (RED)

Pin

Wire Color

Circuit No.

Function

A1-B2

--

--

Not Used

B3

LT GRN

1324

Backup Lamp Feed

B4-B6

--

--

Not Used

C1

BRN

2509

Park Lamp Feed

C2-C4

--

--

Not Used

C5

DK GRN

619

Stop, Turn Lamp Feed Rear

C6-D1

--

--

Not Used

D2

BRN/WHT

2609

Park Lamp Feed

D3-5

--

--

Not Used

D6

YEL

618

Stop, Turn Lamp Feed Rear

E1-F6

--

--

Not Used

Underhood Fuse Block (UFB) - C4


Object Number: 362760  Size: CH

Connector Part Information

    • 12193914
    • 32-Way F Metri-Pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A1

--

--

Not Used

A2

DK GRN/WHT

711

High Beam Headlamp Feed

A3-A5

--

--

Not Used (Except Envoy)

A6

DK GRN

1329

Horn Feed

B1

YEL/BLK

712

Low Beam Headlamp Feed

B2

DK BLU

198

Fused Output Headlamp

B3

YEL

525

Headlamp Switch Output Low Beam

B4

PPL

524

High Beam

B5

BRN

2309

Park Lamp Feed

B6-C4

--

--

Not Used

C5

BRN

2309

Park Lamp Feed

C6-E4

--

--

Not Used

E5

LT BLU

2114

Turn Signal Lamp Feed Front

E6-F3

--

--

Not Used

F4

DK BLU

2115

Turn Signal Lamp Feed Front

F5-F6

--

--

Not Used

Underhood Fuse Block (UFB) - C5


Object Number: 258677  Size: CH

Connector Part Information

    • 12146037
    • 2-Way F Maxi-Fuse (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED

542

Battery Fused

B

RED

342

Battery Fused

Underhood Fuse Block (UFB) - C6


Object Number: 280788  Size: CH

Connector Part Information

    • 12146038
    • 2-Way F Maxi-Fuse (GRY)

Pin

Wire Color

Circuit No.

Function

A

RED

442

Fused Output Battery

B

RED

642

Fused Output Battery