GM Service Manual Online
For 1990-2009 cars only
Table 1: Audio Amplifier C1 w/Class 2
Table 2: Audio Amplifier C1 w/o Class 2
Table 3: Audio Amplifier C2 w/o Class 2
Table 4: Audio Amplifier C2 w/Class 2
Table 5: Noise Cancellation Microphone w/ Class 2 Amplifier
Table 6: Radio C1 w/o Navigation
Table 7: Radio C2 w/o Navigation
Table 8: Rear Seat Audio (RSA) Controller
Table 9: Speaker - LF Door
Table 10: Speaker - LF Tweeter
Table 11: Speaker - LR Door
Table 12: Speaker - RF Door
Table 13: Speaker - RF Tweeter
Table 14: Speaker - RR Door
Table 15: Speaker - LR Twiddler
Table 16: Speaker - RR Twiddler
Table 17: Speaker - Subwoofer
Table 18: Steering Wheel Controls - Left Lower (Fuel/Trip)
Table 19: Steering Wheel Controls - Right Lower (Personalization/Select)
Table 20: Steering Wheel Controls - Upper Left (Radio-Program/Source)
Table 21: Steering Wheel Controls - Upper Right (Radio-Seek/Volume)

Audio Amplifier C1 w/Class 2


Object Number: 73156  Size: CH

Connector Part Information

    • 12110088
    • 24-Way F Micro-Pack 100 Series (L-GY)

Pin

Wire Color

Circuit No.

Function

A1

WH

1854

Right Rear Twiddler Speaker Output (+)

A2

YE

1949

Right Rear Twiddler Speaker Output (-)

A3

BN

199

Left Rear Speaker Output (+)

A4

YE

116

Left Rear Speaker Output (-)

A5

TN

201

Left Front Speaker Output (+)

A6

GY

118

Left Front Speaker Output (-)

A7

D-BU

46

Right Rear Speaker Output (+)

A8

L-BU

115

Right Rear Speaker Output (-)

A9

L-GN

200

Right Front Speaker Output (+)

A10

D-GN

117

Right Front Speaker Output (-)

A11-A12

--

--

Not Used

B1

L-GN/BK

1354

Noise Reduction Microphone Supply Voltage

B2

D-GN

1488

Noise Reduction Microphone Signal

B3

OG/BK

1546

Right Front Low Level Audio Signal (-)

B4

D-GN

1947

Left Front Low Level Audio Signal (-)

B5

TN

511

Left Front Low Level Audio Signal (+)

B6

L-GN

512

Right Front Low Level Audio Signal (+)

B7

BARE

2011

Drain Wire

B8-B9

--

--

Not Used

B10

D-BU

2272

Amplifier Class 2 Serial Data

B11-B12

--

--

Not Used

Audio Amplifier C1 w/o Class 2


Object Number: 73156  Size: CH

Connector Part Information

    • 12110088
    • 24-Way F Micro-Pack 100 Series (L-GY)

Pin

Wire Color

Circuit No.

Function

A1-A4

--

--

Not Used

A5

BN

199

Left Rear Speaker Output (+)

A6

YE

116

Left Rear Speaker Output (-)

A7

D-BU

46

Right Rear Speaker Output (+)

A8

L-BU

115

Right Rear Speaker Output (-)

A9

TN

201

Left Front Speaker Output (+)

A10

GY

118

Left Front Speaker Output (-)

A11

L-GN

200

Right Front Speaker Output (+)

A12

D-GN

117

Right Front Speaker Output (-)

B1

GY/BK

2334

Remote Amplifier Sense Signal

B2

PU

493

Rear Seat Audio Enable Signal

B3

BK

1946

Right Rear Low Level Audio Signal (-)

B4

D-BU

546

Right Rear Low Level Audio Signal (+)

B5

D-GN/WH

1547

Left Rear Low Level Audio Signal (-)

B6

BN

599

Left Rear Low Level Audio Signal (+)

B7

OG/BK

1546

Right Front Low Level Audio Signal (-)

B8

L-GN

512

Right Front Low Level Audio Signal (+)

B9

D-GN

1947

Left Front Low Level Audio Signal (-)

B10

TN

511

Left Front Low Level Audio Signal (+)

B11

PK

314

Radio On Signal

B12

BARE

2099

Drain Wire

Audio Amplifier C2 w/o Class 2


Object Number: 73158  Size: CH

Connector Part Information

    • 12110626
    • 8-Way F Metri-Pack 280 Series Flexlock (L-GY)

Pin

Wire Color

Circuit No.

Function

A

BK/WH

1851

Ground

B

D-BU/WH

1346

Left Subwoofer Speaker Output (+)

C

D-GN

1795

Right Subwoofer Speaker Output (+)

D

--

--

Not Used

E

BARE

2011

Drain Wire

F

L-BU/BK

315

Right Subwoofer Speaker Output (-)

G

L-GN/BK

1794

Left Subwoofer Speaker Output (-)

H

OG

3740

Battery Positive Voltage

Audio Amplifier C2 w/Class 2


Object Number: 73158  Size: CH

Connector Part Information

    • 12110626
    • 8-Way F Metri-Pack 280 Series Flexlock (L-GY)

Pin

Wire Color

Circuit No.

Function

A

BK/WH

1851

Ground

B

D-GN

1795

Right Subwoofer Speaker Output (+)

C

RD

1858

Left D Pillar Twiddler Speaker Output (+)

D

L-GN/BK

1794

Left Subwoofer Speaker Output (-)

E

D-BU/WH

346

Left Subwoofer Speaker Output (+)

F

PU

1958

Left Rear Twiddler Speaker Output (-)

G

L-BU/BK

315

Right Subwoofer Speaker Output (-)

H

OG

3740

Battery Positive Voltage

Noise Cancellation Microphone w/ Class 2 Amplifier


Object Number: 35441  Size: CH

Connector Part Information

    • 12047663
    • 2-Way M Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

D-GN

1488

Noise Reduction Microphone Supply Voltage

B

L-GN

1354

Drain Wire

Radio C1 w/o Navigation


Object Number: 73156  Size: CH

Connector Part Information

    • 12110088
    • 24-Way F Micro-Pack 100 Series (GY)

Pin

Wire Color

Circuit No.

Function

A1

OG

1044

Radio Class 2 Serial Data

A2

--

--

Not Used

A3

D-GN

493

Rear Seat Audio Enable Signal w/o Class 2 Amplifier

A4-A7

--

--

Not Used

A8

TN

511

Left Front Low Level Audio Signal (+)

A9

D-GN

1947

Left Front Low Level Audio Signal (-)

A10

BK

1946

Right Rear Low Level Audio Signal (-)

A11

D-BU

546

Right Rear Low Level Audio Signal (+)

A12

BK/WH

1851

Ground

B1

OG

340

Battery Positive Voltage

B2

--

--

Not Used

B3

PK

314

Radio On Signal w/o Class 2 Amplifier

B4-B5

--

--

Not Used

B6

GY/BK

2334

Radio Mute Signal w/o Class 2 Amplifier

B7

--

--

Not Used

B8

BN

599

Left Rear Low Level Audio Signal (+)

B9

D-GN/WH

1547

Left Rear Low Level Audio Signal (-)

B10

OG/BK

1546

Right Front Low Level Audio Signal (-)

B11

L-GN

512

Right Front Low Level Audio Signal (+)

B12

--

--

Not Used

Radio C2 w/o Navigation


Object Number: 73151  Size: CH

Connector Part Information

    • 12064799
    • 12-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

A-D

--

--

Not Used

E

D-GN/WH

817

Vehicle Speed Signal

F-K

--

--

Not Used

L

OG/BK

2061

Navigation Mono Audio Signal (-)

M

PK/BK

2062

Navigation Mono Audio Signal (+)

Rear Seat Audio (RSA) Controller


Object Number: 130690  Size: CH

Connector Part Information

    • 12110206
    • 24-Way F Micro-Pack 100 Series (L-BU)

Pin

Wire Color

Circuit No.

Function

A1

L-BU

2288

RSA Class 2 Serial Data

A2

OG

340

Battery Positive Voltage

A3

--

--

Not Used

A4

BK/WH

1851

Ground

A5

BARE

2099

Drain Wire

A6

BN

1547

Left Rear Low Level Audio Signal (-) w/o Class 2 Amplifier

A7

BK

1946

Right Rear Low Level Audio Signal (-)

A8

D-GN/WH

1547

Left Rear Low Level Audio Signal (-) w/o Class 2 Amplifier

A9

BK

1946

Right Rear Low Level Audio Signal (-) w/o Class 2 Amplifier

A10-A12

--

--

Not Used

B1-B4

--

--

Not Used

B5

BARE

2099

Drain Wire w/o Class 2 Amplifier

B6

BN

599

Left Rear Low Level Audio Signal (+)

B7

D-BU

546

Right Rear Low Level Audio Signal (+)

B8

BN

599

Left Rear Low Level Audio Signal (+) w/o Class 2 Amplifier

B9

D-BU

546

Right Rear Low Level Audio Signal (+) w/o Class 2 Amplifier

B10-B12

--

--

Not Used

Speaker - LF Door


Object Number: 280768  Size: CH

Connector Part Information

    • 12052832
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

GY

118

Left Front Speaker Output (-)

B

TN

201

Left Front Speaker Output (+)

Speaker - LF Tweeter


Object Number: 795623  Size: CH

Connector Part Information

    • 12110131
    • 2-Way M Metri-Pack 280 Series (WH)

Pin

Wire Color

Circuit No.

Function

A

GY

118

Left Front Speaker Output (-)

B

TN

201

Left Front Speaker Output (+)

Speaker - LR Door


Object Number: 280768  Size: CH

Connector Part Information

    • 12052832
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

YE

116

Left Rear Speaker Output (-)

B

BN

199

Left Rear Speaker Output (+)

Speaker - RF Door


Object Number: 280768  Size: CH

Connector Part Information

    • 12052832
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

D-GN

117

Right Front Speaker Output (-)

B

L-GN

200

Right Front Speaker Output (+)

Speaker - RF Tweeter


Object Number: 795623  Size: CH

Connector Part Information

    • 12110131
    • 2-Way M Metri-Pack 280 Series (WH)

Pin

Wire Color

Circuit No.

Function

A

D-GN

117

Right Front Speaker Output (-)

B

L-GN

200

Right Front Speaker Output (+)

Speaker - RR Door


Object Number: 280768  Size: CH

Connector Part Information

    • 12052832
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

L-BU

115

Right Rear Speaker Output (-)

B

D-BU

46

Right Rear Speaker Output (+)

Speaker - LR Twiddler


Object Number: 280768  Size: CH

Connector Part Information

    • 12052832
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

YE

116

Left Rear Speaker Output (-)

B

BN

199

Left Rear Speaker Output (+)

Speaker - RR Twiddler


Object Number: 280768  Size: CH

Connector Part Information

    • 12052832
    • 2-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

L-BU

115

Right Rear Speaker Output (-)

B

D-BU

46

Right Rear Speaker Output (+)

Speaker - Subwoofer


Object Number: 130637  Size: CH

Connector Part Information

    • 12064760
    • 4-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

1794

Left Subwoofer Speaker Output (-)

B

D-BU/WH

346

Left Subwoofer Speaker Output (+)

C

D-GN

1795

Right Subwoofer Speaker Output (+)

D

L-BU/BK

315

Right Subwoofer Speaker Output (-)

Steering Wheel Controls - Left Lower (Fuel/Trip)


Object Number: 605502  Size: CH

Connector Part Information

    • 50579404
    • 4-Way F Molex (BK)

Pin

Wire Color

Circuit No.

Function

1

BN

230

Steering Wheel Switch Dimming Control

2

YE

1327

DIC Fuel Signal

3

D-BU

894

DIC Toggle Switch Signal

4

BK

1851

Ground

Steering Wheel Controls - Right Lower (Personalization/Select)


Object Number: 605511  Size: CH

Connector Part Information

    • 50579405
    • 5-Way F Molex (BK)

Pin

Wire Color

Circuit No.

Function

1

BN

230

Steering Wheel Switch Dimming Control

2

D-GN

1358

DIC Switch Signal

3

OG

1816

DIC Set/Reset Switch Signal

4

BK

1851

Ground

5

--

--

Not Used

Steering Wheel Controls - Upper Left (Radio-Program/Source)


Object Number: 605511  Size: CH

Connector Part Information

    • 50579405
    • 5-Way F Molex (BK)

Pin

Wire Color

Circuit No.

Function

1

L-GN

1011

Remote Radio Control Signal

2

BN

230

Steering Wheel Switch Dimming Control

3

BK

1851

Ground

4

--

--

Not Used

5

L-GN

1011

Remote Radio Control Signal

Steering Wheel Controls - Upper Right (Radio-Seek/Volume)


Object Number: 605507  Size: CH

Connector Part Information

    • 50579406
    • 6-Way F Molex (BK)

Pin

Wire Color

Circuit No.

Function

1

WH

2283

12-Volt Reference

2

L-GN

1011

Remote Radio Control Signal

3

BN

230

Steering Wheel Switch Dimming Control

4

--

--

Not Used

5

BK

1851

Ground

6

L-GN

1011

Remote Radio Control Signal