GM Service Manual Online
For 1990-2009 cars only
Table 1: Audio Amplifier -- C1
Table 2: Audio Amplifier -- C2
Table 3: Radio -- C1
Table 4: Radio -- C2
Table 5: Rear Seat Audio Control
Table 6: Speaker -- LF Door
Table 7: Speaker - LR Door
Table 8: Speaker - LR (UQ3 Only)
Table 9: Speaker - RF Door
Table 10: Speaker - RR Door
Table 11: Speaker - RR (UQ3 Only)
Table 12: Steering Wheel Controls-Left
Table 13: Steering Wheel Controls-Right
Table 14: Tailgate Audio Controls
Table 15: Tweeter -- LF Door
Table 16: Tweeter -- RF Door

Audio Amplifier -- C1


Object Number: 73158  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

DK BLU

926

Amplifier Present Signal

C-D

--

--

Not Used

E

PPL

493

Rear Seat Audio Enable Signal

PPL

493

Rear Seat Audio Enable Signal

F

PPL

927

Amplifier Control

G

ORN

2040

Battery Positive Voltage

H

BLK/WHT

351

Ground

BLK/WHT

351

Ground

Audio Amplifier -- C2


Object Number: 73156  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

LT GRN/BLK

1794

Left Rear Subwoofer Speaker Output (-)

A2

DK BLU/

WHT

346

Left Rear Subwoofer Speaker Output (+)

A3

LT BLU/BLK

315

Right Rear Subwoofer Speaker Output (-)

A4

DK GRN

1795

Right Rear Subwoofer Speaker Output (+)

A5

WHT

1959

Left Rear Midrange Speaker Output (-)

A6

TAN

1859

Left Rear Midrange Speaker Output (+)

A7

RED

1955

Right Rear Midrange Speaker Output (-)

A8

TAN

1855

Right Rear Midrange Speaker Output (+)

A9

DK BLU

46

Right Rear Speaker Output (+)

A10

LT BLU

115

Right Rear Speaker Output (-)

A11

BRN

199

Left Rear Speaker Output (+)

A12

YEL

116

Left Rear Speaker Output (-)

B1

BLK

1946

Right Rear Low Level Audio Signal (-)

B2

DK BLU

546

Right Rear Low Level Audio Signal (+)

B3

BRN

1999

Left Rear Low Level Audio Signal (-)

B4

BRN

599

Left Rear Low Level Audio Signal(+)

B5

LT GRN

1948

Right Front Low Level Audio Signal (-)

B6

LT GRN

512

Right Front Low Level Audio Signal(+)

B7

DK GRN

1947

Left Front Low Level Audio Signal (-)

B8

TAN

511

Left Front Low Level Audio Signal(+)

B9

LT GRN

200

Right Front Speaker Output (+)

B10

DK GRN

117

Right Front Speaker Output (-)

B11

TAN

201

Left Front Speaker Output (+)

B12

GRY

118

Left Front Speaker Output (-)

Radio -- C1


Object Number: 73156  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

ORN

1044

Radio Class 2 Serial Data

A2

--

--

Not Used

A3

PPL

493

Rear Seat Audio Enable Signal

A4-A5

--

--

Not Used

A6

PPL

1375

Remote Radio Control Supply Voltage

A7

DK BLU

1796

Steering Wheel Controls Signal

A8

TAN

201

Left Front Speaker Output (+) (w/o UQ3)

TAN

511

Left Front Speaker Output (+) (w/UQ3)

A9

GRY

118

Left Front Speaker Output (-) (w/o UQ3)

DK GRN

1947

Left Front Speaker Output (-) (w/UQ3)

A10

LT BLU

115

Right Rear Speaker Output (-) (w/o UQ3)

BLK

1946

Right Rear Speaker Output (-) (w/UQ3)

A11

DK BLU

46

Right Rear Speaker Output (+) (w/o UQ3)

DK BLU

546

Right Rear Speaker Output (+) (w/UQ3)

A12

BLK/WHT

351

Ground

B1

ORN

5640

Battery Positive Voltage

B2

--

--

Not Used

B3

PPL

927

Amplifier Control (w/UQ3)

B4

GRY

8

Instrument Panel Lamp Supply Voltage - 1

B5

BLK

1450

Ground

B6

DK BLU

926

Amplifier Present Signal (w/UQ3)

B7

LT GRN

1011

Remote Radio Control Signal (w/RSA)

B8

BRN

199

Left Rear Speaker Output (+)(w/o UQ3)

BRN

599

Left Rear Speaker Output (+)(w/UQ3)

B9

YEL

116

Left Rear Speaker Output (-) (w/o UQ3)

BRN

1999

Left Rear Speaker Output (-) (w/UQ3)

B10

DK GRN

117

Right Front Speaker Output (-) (w/o UQ3)

LT GRN

1948

Right Front Speaker Output (-) (w/UQ3)

B11

LT GRN

200

Right Front Speaker Output (+) (w/o UQ3)

LT GRN

512

Right Front Speaker Output (+) (w/UQ3)

B12

--

--

Not Used

Radio -- C2


Object Number: 73151  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A-F

--

--

Not Used

G

GRY

2289

Rear HVAC/Audio Class 2 Serial Data

H-J

--

--

Not Used

L

BLK/WHT

372

Remote Radio Audio Output (-)

M

BRN/WHT

367

Remote Radio Left Audio Signal

Rear Seat Audio Control


Object Number: 73152  Size: CH

Connector Part Information

    • 12110259
    • 16-Way F Micro-Pack 100 Series (GRN)

Pin

Wire Color

Circuit No.

Function

A1

LT BLU

115

Right Rear Speaker Output (-) (w/o UQ3)

BLK

1946

Right Rear Speaker Output (-) (w/UQ3)

A2

DK BLU

46

Right Rear Speaker Output (+) (w/o UQ3)

DK BLU

546

Right Rear Speaker Output (+) (w/UQ3)

A3

YEL

116

Left Rear Speaker Output (-) (w/o UQ3)

BRN

1999

Left Rear Speaker Output (-) (w/UQ3)

A4

BRN

199

Left Rear Speaker Output (+)(w/o UQ3)

BRN

599

Left Rear Speaker Output (+)(w/UQ3)

A5

LT GRN

1011

Remote Radio Control Signal

A6

GRY

8

Instrument Panel Lamp Supply Voltage - 1

A7

--

--

Not Used

A8

PPL

1375

Remote Radio Control Supply Voltage

B1

LT BLU

115

Right Rear Speaker Output (-) (Base Radio)

B2

DK BLU

46

Right Rear Speaker Output (+) (Base Radio)

B3

YEL

116

Left Rear Speaker Output (-) (Base Radio)

B4

BRN

199

Left Rear Speaker Output (+) (Base Radio)

B5

PPL

493

Rear Seat Audio Enable Signal

B6

BLK

650

Ground

B7

--

--

Not Used

B8

BRN

9

Park Lamp Supply Voltage

Speaker -- LF Door


Object Number: 365973  Size: CH

Connector Part Information

    • 12186847
    • 2-Way F Metri-Pack 150 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

GRY

118

Left Front Speaker Output (-)

B

TAN

201

Left Front Speaker Output (+)

Speaker - LR Door


Object Number: 280768  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

YEL

116

Left Rear Speaker Output (-)

B

BRN

199

Left Rear Speaker Output (+)

Speaker - LR (UQ3 Only)


Object Number: 130637  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

LT GRN/BLK

1794

[Left or Rear] Subwoofer Speaker Output (-)

B

DK BLU/

WHT

346

Left Subwoofer Speaker Output (+)

C

WHT

1959

Left Rear Midrange Speaker Output (-)

D

TAN

1859

Left Rear Midrange Speaker Output (+)

Speaker - RF Door


Object Number: 365973  Size: CH

Connector Part Information

    • 12186847
    • 2-Way F Metri-Pack 150 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

117

Right Front Speaker Output (-)

B

LT GRN

200

Right Front Speaker Output (+)

Speaker - RR Door


Object Number: 280768  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

LT BLU

115

Right Rear Speaker Output (-)

B

DK BLU

46

Right Rear Speaker Output (+)

Speaker - RR (UQ3 Only)


Object Number: 130637  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

LT BLU/BLK

315

Right Subwoofer Speaker Output (-)

B

DK GRN

1795

Right Subwoofer Speaker Output (+)

C

RED

1955

Right Rear Midrange Speaker Output (-)

D

TAN

1855

Right Rear Midrange Speaker Output (+)

Steering Wheel Controls-Left


Object Number: 605511  Size: CH

Connector Part Information

    • 50579405
    • 5-Way F (BLK)

Pin

Wire Color

Circuit No.

Function

1

DK BLU

1796

Steering Wheel Controls Signal

2

GRY/BLK

1491

I/P Lamps Supply Voltage

3

BLK

350

Ground

4

-

-

Not Used

5

DK BLU

1796

Steering Wheel Controls Signal

Steering Wheel Controls-Right


Object Number: 605507  Size: CH

Connector Part Information

    • 50579406
    • 6-Way F (BLK)

Pin

Wire Color

Circuit No.

Function

1

PPL

1375

Remote Radio Control Supply Voltage

2

DK BLU

1796

Steering Wheel Controls Signal

3

GRY/BLK

1491

I/P Lamps Supply Voltage

4

-

-

Not Used

5

BLK

350

Ground

6

DK BLU

1796

Steering Wheel Controls Signal

Tailgate Audio Controls


Object Number: 287981  Size: CH

Connector Part Information

    • 12092162
    • 4-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL

1375

Remote Radio Control Supply Voltage

B

--

--

Not Used

C

DK BLU

1796

Steering Wheel Controls Signal

D

--

--

Not Used

Tweeter -- LF Door


Object Number: 280768  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

GRY

118

Left Front Speaker Output (-)

B

TAN

201

Left Front Speaker Output (+)

Tweeter -- RF Door


Object Number: 280768  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

DK GRN

117

Right Front Speaker Output (-)

B

LT GRN

200

Right Front Speaker Output (+)