GM Service Manual Online
For 1990-2009 cars only
Table 1: Vehicle Communication Interface Module (VCIM) C1
Table 2: Vehicle Communication Interface Module (VCIM) C2
Table 3: Vehicle Communication Interface Module (VCIM) C3
Table 4: Vehicle Communication Interface Module (VCIM) C4

Vehicle Communication Interface Module (VCIM) C1


Object Number: 814530  Size: CH

Connector Part Information

    • OEM: 917981-1
    •  16-Way M MK11 Hybrid (WH)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

BN/WH

2517

Keypad Red LED

3

YE/BK

2516

Keypad Green LED

4-5

--

--

Not Used

6

L-GN/BK

2515

Keypad Supply Voltage

7

BK

1050

Ground

8-10

--

--

Not Used

11

D-GN/WH

2514

Keypad Signal

12-14

--

--

Not used

15

RD/WH

2240

Battery Positive Voltage

16

--

--

Not Used

Vehicle Communication Interface Module (VCIM) C2


Object Number: 814532  Size: CH

Connector Part Information

    • OEM: 917975-1
    •  12-Way M MKII Hybrid (WH)

Pin

Wire Color

Circuit No.

Function

1

D-BU

658

Cellular Telephone Voice Signal (w/YQ2/YQ3/YQ4)

2

L-BU/BK

659

Cellular Telephone Voice Low Reference (w/YQ2/YQ3/YQ4)

3-7

--

--

Not Used

8

BARE

814

Drain Wire (w/YQ2/YQ3/YQ4)

9

GY

655

Cellular Telephone Microphone Signal

10

BARE

1782

Drain Wire

11-12

--

--

Not Used

Vehicle Communication Interface Module (VCIM) C3


Object Number: 814531  Size: CH

Connector Part Information

    • OEM: 917983-2
    •  16-Way M MKII Hybrid (BK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

PK

5149

Voice Recognition Audio Signal

3

--

--

Not Used

4

PK/BK

5152

Voice Recognition Audio Low Reference

5

BARE

1792

Drain Wire

6-16

--

--

Not Used

Vehicle Communication Interface Module (VCIM) C4


Object Number: 1412985  Size: CH

Connector Part Information

    • OEM: 638695-2
    •  12-Way F Tyco MK11 (BK)

Pin

Wire Color

Circuit No.

Function

1

D-GN

5060

Low Speed GMLAN Serial Data

2

TN/BK

2500

High Speed GMLAN Serial Data (+) (1)

3

TN

2501

High Speed GMLAN Serial Data (-) (1)

4-7

--

--

Not Used

8

TN/BK

2500

High Speed GMLAN Serial Data (+) (1)

9

TN

2501

High Speed GMLAN Serial Data (-) (1)

10-12

--

--

Not Used