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

Inside Rearview Mirror (ISRVM)


Object Number: 872580  Size: CH

Connector Part Information

    • 917981-2
    • 16-Way M Amp .040/.070 Hybrid (BK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

BARE

1782

Drain Wire

3-4

--

--

Not Used

5

GY

1690

Automatic Day/Night Mirror Signal

6-7

--

--

Not Used

8

BK/WH

1051

Ground

9

L-GN

24

Backup Lamp Supply Voltage

10

GY

655

Cellular Microphone Signal (UE1)

11

PU

679

Keypad Signal (UE1)

12

BN

1941

Keypad Supply Voltage

13

PK

1339

Ignition 1 Voltage

14

GY/BK

1798

Keypad Green LED Signal (UE1)

15

PU

1156

Keypad Red LED Signal (UE1)

16

PK

1691

Automatic Day/Night Mirror Low Reference

Vehicle Communication Interface Module (VCIM), C1


Object Number: 814530  Size: CH

Connector Part Information

    • 917981-1
    • 16-Way M MKII Hybrid (WH)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

PU

1156

Keypad Red LED Signal

3

GY/BK

1798

Keypad Green LED Signal

4-5

--

--

Not Used

6

BN

1941

Keypad Supply Voltage

7

BK/WH

851

Ground

8-10

--

--

Not Used

11

PU

679

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

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

Pin

Wire Color

Circuit No.

Function

1

D-BU

658

Cellular Telephone Voice Signal

2

L-BU/BK

659

Cellular Telephone Voice Low Reference

3-5

--

--

Not Used

6

PU

1807

Class 2 Serial Data

7

--

--

Not Used

8

BARE

814

Shield

9

GY

655

Cellular 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

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

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

PK

5149

Voice In Signal

3

--

--

Not Used

4

PK/BK

5152

Return Voice In Signal

5

BARE

1792

Drain Wire

6-16

--

--

Not Used