GM Service Manual Online
For 1990-2009 cars only
Table 1: Cellular Telephone Interface Board
Table 2: Cellular Telephone Module
Table 3: Vehicle Communication Interface Module (VCIM) C1
Table 4: Vehicle Communication Interface Module (VCIM) C2
Table 5: Vehicle Communication Interface Module (VCIM) C3

Cellular Telephone Interface Board


Object Number: 62435  Size: CH

Connector Part Information

    • 12047531
    • 10-Way F Micro-Pack 100 Series (BLK)

Pin

Wire Color

Circuit No.

Function

1

RED

2526

Handset Ground

2

BRN

1941

Ignition 3 Voltage

3

GRY/BLK

1798

Handset Data Low Reference

4

PPL

1156

Handset Keypad Data Signal

5

PPL

679

Handset Display Data Signal

6

PNK

1155

Handset Audio Low Reference

7

LT BLU/WHT

1153

Handset Mouthpiece Audio Signal

8

LT BLU

1235

Handset Earpiece Audio Signal

9-10

--

--

Not Used

Cellular Telephone Module


Object Number: 73222  Size: CH

Connector Part Information

    • 12110115
    • 32-Way F Micro-Pack 100 Series (DK BLU)

Pin

Wire Color

Circuit No.

Function

E1

BLK

1051

Ground

E2

PPL

1807

Class 2 Serial Data

E3

--

--

Not Used

E4

PPL

679

Handset Display Data Signal

E5

GRY/BLK

1798

Ground

E6

PPL

1156

Handset Keypad Data Signal

E7

BRN/WHT

367

Remote Radio Left Audio Signal

E8

BRN

1941

Ignition 3 Voltage

E9

GRY

2535

Cellular Telephone RF Boost Control Signal

E10

--

--

Not Used

E11

DK BLU

658

Cellular Telephone Voice Signal

E12

LT BLU

1235

Handset Earpiece Audio Signal

E13

LT BLU

1153

Handset Mouthpiece Audio Signal

E14

BARE

814

Drain Wire

E15

GRY

655

Cellular Microphone Signal

E16

ORN

2240

Battery Positive Voltage

F1

--

--

Not Used

F2

PPL

1807

Class 2 Serial Data

F3

ORN/BLK

2360

Modem Audio Low Reference (w/U45)

F4

TAN/BLK

2388

Modem Audio Return Signal (w/U45)

F5

BRN/WHT

2387

Modem Audio Transmit Signal (w/U45)

F6-F7

--

--

Not Used

F8

RED

2526

Handset Ground

F9

BARE

814

Drain Wire

F10

BARE

814

Drain Wire

F11

LT BLU/BLK

659

Cellular Telephone Voice Low Reference

F12

BARE

814

Drain Wire

F13

PNK

1155

Handset Audio Low Reference

F14

BARE

814

Drain Wire (w/U45 or U3R)

F15

TAN

2610

Cellular Microphone Signal (w/U45 or U3R)

F16

GRY

655

Cellular Telephone Microphone Signal

Vehicle Communication Interface Module (VCIM) C1


Object Number: 655810  Size: CH

Connector Part Information

    • 917981 - 1
    • 16 - Way F (WHT)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

BRN/WHT

2517

Keypad Red LED Signal

3

YEL/BLK

2516

Keypad Green LED Signal

4-5

--

--

Not Used

6

LT GRN/BLK

2515

Keypad Supply Voltage

7

BLK

1051

Ground

8

BLK

1051

Ground

9-10

--

--

Not Used

11

DK GRN/WHT

2514

Keypad Signal

12-14

--

--

Not Used

15

ORN

2240

Battery Positive Voltage

16

ORN

2240

Battery Positive Voltage

Vehicle Communication Interface Module (VCIM) C2


Object Number: 697023  Size: CH

Connector Part Information

    • 917981 - 1
    • 12 - Way F (WHT)

Pin

Wire Color

Circuit No.

Function

1

DK BLU

658

Cellular Telephone Voice Signal (w/o UV8)

BRN/WHT

367

Cellular Telephone Voice Signal (w/ UV8)

2

BLK/WHT

659

Cellular Telephone Voice Low Reference

3-4

--

--

Not Used

5

PPL

1807

Class 2 Serial Data

6-7

--

--

Not Used

8

BARE

814

Drain Wire

9

GRY

655

Cellular Microphone Signal (w/o UV8)

GRY/BLK

655

Cellular Microphone Signal (w/ UV8)

10

BARE

814

Drain Wire

11-12

--

--

Not Used

Vehicle Communication Interface Module (VCIM) C3


Object Number: 655810  Size: CH

Connector Part Information

    • 917983 - 2
    • 16 - Way F (BLK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

TAN

2610

Cellular Microphone Signal (w/U45 or U3R w/o UV8)

3-4

--

--

Not Used

5

BARE

814

Drain Wire (w/U45 or U3R w/o UV8)

6-16

--

--

Not Used