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

Cellular Telephone Microphone


Object Number: 35441  Size: CH

Connector Part Information

  • OEM: 12047663
  • Service: 12085481
  • Description: 2-Way M Metri-Pack 150 Series (BK)

Cellular Telephone Microphone

Pin

Wire Color

Circuit No.

Function

A

WH

1489

Cellular Microphone Low Reference

B

GY

655

Cellular Microphone Signal

Vehicle Communication Interface Module (VCIM) C1


Object Number: 814530  Size: CH

Connector Part Information

  • OEM: 917981-1
  • Service: 15306351
  • Description: 16-Way M MKII Hybrid (WH)

Vehicle Communication Interface Module (VCIM) C1

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

BN/WH

2517

Keypad Red LED Signal

3

YE/BK

2516

Keypad Green LED Signal

4-5

--

--

Not Used

6

L-GN/BK

2515

Keypad Supply Voltage

7

BK/WH

151

Ground

8-10

--

--

Not Used

11

D-GN/WH

2514

Keypad Signal

12-15

--

--

Not Used

16

RD/WH

1640

Battery Positive Voltage

Vehicle Communication Interface Module (VCIM) C2


Object Number: 814532  Size: CH

Connector Part Information

  • OEM: 917975-1
  • Service: 88952886
  • Description: 12-Way M MKII Hybrid (WH)

Vehicle Communication Interface Module (VCIM) C2

Pin

Wire Color

Circuit No.

Function

1

PK/BK

2062

Cellular Telephone Voice Signal

2

OG/BK

2061

Cellular Telephone Voice Low Reference

3-5

--

--

Not Used

6

PU

1807

Class 2 Serial Data

7

--

--

Not Used

8

GY

814

Drain Wire

9

GY

655

Cellular Microphone Signal

10

GY

1489

Cellular Microphone Low Reference

11-12

--

--

Not Used

Vehicle Communication Interface Module (VCIM) C3


Object Number: 1412985  Size: CH

Connector Part Information

  • OEM: 638695-2
  • Service: 88953373
  • Description: 12-Way F (BK)

Vehicle Communication Interface Module (VCIM) C3

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

TN/BK

2500

High Speed GMLAN Serial Data Bus (+)

3

TN

2501

High Speed GMLAN Serial Data Bus (-)

4-7

--

--

Not Used

8

TN/BK

2500

High Speed GMLAN Serial Data Bus (+)

9

TN

2501

High Speed GMLAN Serial Data Bus (-)

10-12

--

--

Not Used