GM Service Manual Online
For 1990-2009 cars only
Connector 1: Audio Amplifier C1 (Premium-UQA)
Connector 2: Audio Amplifier C2 (Premium-UQA)
Connector 3: Audio Amplifier C3 (Premium-UQA)
Connector 4: Inflatable Restraint Steering Wheel Module Coil C4
Connector 5: Noise Compensation Microphone (Premium-UQA)
Connector 6: Radio Antenna Module
Connector 7: Radio C1
Connector 8: Speaker Assembly - LF Door (Base Radio)
Connector 9: Speaker - LF Door (Premium Radio-UQA)
Connector 10: Speaker - LF Door Midrange (Premium-UQA)
Connector 11: Speaker - LR
Connector 12: Speaker Assembly - RF Door (Base Radio)
Connector 13: Speaker - RF Door (Premium-UQA)
Connector 14: Speaker - RF Door Midrange (Premium-UQA)
Connector 15: Speaker - RR
Connector 16: Steering Wheel Controls - Left
Connector 17: Steering Wheel Controls - Right

Audio Amplifier C1 (Premium-UQA)


Object Number: 73158  Size: CH

Connector Part Information

  • OEM: 12110626
  • Service: 12110626
  • Description: 8-Way F Metri-Pack 280 Series, Flexlock (GY)

Audio Amplifier C1 (Premium-UQA)

Pin

Wire Color

Circuit No.

Function

A

BK

1450

Ground

B

--

--

Not Used

C

D-GN

117

Right Front Speaker Output (-)

D

TN

201

Left Front Speaker Output (+)

E

GY

118

Left Front Speaker Output (-)

F

L-GN

200

Right Front Speaker Output (+)

G

--

--

Not Used

H

OG

3740

Battery Positive Voltage

Audio Amplifier C2 (Premium-UQA)


Object Number: 280764  Size: CH

Connector Part Information

  • OEM: 12064993
  • Service: 12102485
  • Description: 6-Way F Micro-Pack 100 Series (BK)

Audio Amplifier C2 (Premium-UQA)

Pin

Wire Color

Circuit No.

Function

5

D-BU

2272

Amplifier Class 2 Serial Data

6

--

--

Not Used

7

L-GN/BK

1354

Drain Wire

8

D-GN

1488

Noise Compensation Microphone Supply Voltage

9-10

--

--

Not Used

Audio Amplifier C3 (Premium-UQA)


Object Number: 73156  Size: CH

Connector Part Information

  • OEM: 12110088
  • Service: See Catalog
  • Description: 24-Way F Micro-Pack 100 Series (GY)

Audio Amplifier C3 (Premium-UQA)

Pin

Wire Color

Circuit No.

Function

A1

BARE

1573

Drain Wire

A2

BN

199

Left Rear Speaker Output (+)

A3

YE

116

Left Rear Speaker Output (-)

A4

D-BU

1857

Left Front Midrange Speaker Output (+)

A5

L-BU

1957

Left Front Midrange Speaker Output (-)

A6-A7

--

--

Not Used

A8

D-GN

1953

Right Front Midrange Speaker Output (-)

A9

OG

1853

Right Front Midrange Speaker Output (+)

A10

L-BU

115

Right Rear Speaker Output (-)

A11

D-BU

46

Right Rear Speaker Output (+)

A12

--

--

Not Used

B1

BARE

2012

Drain Wire

B2

BARE

2011

Drain Wire

B3-B7

--

--

Not Used

B8

OG/BK

1546

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

L-GN

512

Right Front Low Level Audio Signal (+)

B12

--

--

Not Used

Inflatable Restraint Steering Wheel Module Coil C4


Object Number: 62434  Size: CH

Connector Part Information

  • OEM: 12045688
  • Service: 12101827
  • Description: 8-Way M Micro-Pack 150 Series (BK)

Inflatable Restraint Steering Wheel Module Coil C4

Pin

Wire Color

Circuit No.

Function

A

YE

1327

DIC Fuel Signal

B

D-BU

894

DIC Toggle Switch Signal

C

D-GN

1358

DIC Switch Signal

D

OG

1816

DIC Set/Reset Switch Signal

E

WH

2283

12-Volt Reference

F

BK

230

Instrument Panel Lamps Dimming Control

BK

230

Instrument Panel Lamps Dimming Control

G

L-GN

1011

Remote Radio Control Signal

H

BK

2250

Ground

BK

2250

Ground

Noise Compensation Microphone (Premium-UQA)


Object Number: 35441  Size: CH

Connector Part Information

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

Noise Compensation Microphone (Premium-UQA)

Pin

Wire Color

Circuit No.

Function

A

D-GN

1488

Noise Compensation Microphone Supply Voltage

B

L-GN/BK

1354

Drain Wire

Radio Antenna Module


Object Number: 611495  Size: CH

Connector Part Information

  • OEM: 12047683
  • Service: 12101828
  • Description: 1-Way M Metri-Pack 150 Series (BK)

Radio Antenna Module

Pin

Wire Color

Circuit No.

Function

A

GY

1698

Antenna Select Supply Voltage

Radio C1


Object Number: 73156  Size: CH

Connector Part Information

  • OEM: 12110088
  • Service: See Catalog
  • Description: 24-Way F Micro-Pack 100 Series (L-GY)

Radio C1

Pin

Wire Color

Circuit No.

Function

A1

OG

1044

Radio Class 2 Serial Data

A2-A7

--

--

Not Used

A8

TN

511

Left Front Low Level Audio Signal (+) (Premium)

TN

201

Left Front Speaker Output (+) (Base)

A9

D-GN

1947

Left Front Low Level Audio Signal (-) (Premium)

GY

118

Left Front Speaker Output (-) (Base)

A10

--

--

Not Used (Premium)

L-BU

115

Right Rear Speaker Output (-) (Base)

A11

--

--

Not Used (Premium)

D-BU

46

Right Rear Speaker Output (+) (Base)

A12

BK/WH

751

Signal Ground

B1

OG

340

Battery Positive Voltage

B2

--

--

Not Used

B3

GY

1698

Antenna Select Supply Voltagel

B4

BN/WH

230

Instrument Panel Lamps Dimming Control

B5

BK

2250

Ground

B6-B7

--

--

Not Used

B8

--

--

Not Used (Premium)

BN

199

Left Rear Speaker Output (+) (Base)

B9

--

--

Not Used (Premium)

YE

116

Left Rear Speaker Output (-) (Base)

B10

OG/BK

1546

Front Low Level Audio (-) (Premium)

D-GN

117

Right Front Speaker Output (-) (Base)

B11

L-GN

512

Right Front Low Level Audio Signal (Premium)

L-GN

200

Right Front Speaker Output (+) (Base)

B12

--

--

Not Used

Speaker Assembly - LF Door (Base Radio)


Object Number: 130687  Size: CH

Connector Part Information

  • OEM: 12064867
  • Service: 88987981
  • Description: 2-Way F Metri-Pack 150 Series (WH)

Speaker Assembly - LF Door (Base Radio)

Pin

Wire Color

Circuit No.

Function

A

GY

118

Left Front Speaker Output (-)

B

TN

201

Left Front Speaker Output (+)

Speaker - LF Door (Premium Radio-UQA)


Object Number: 130687  Size: CH

Connector Part Information

  • OEM: 12064867
  • Service: 88987981
  • Description: 2-Way F Metri-Pack 150 Series (WH)

Speaker - LF Door (Premium Radio-UQA)

Pin

Wire Color

Circuit No.

Function

A

GY

118

Left Front Speaker Output (-)

B

TN

201

Left Front Speaker Output (+)

Speaker - LF Door Midrange (Premium-UQA)


Object Number: 280768  Size: CH

Connector Part Information

  • OEM: 12052832
  • Service: 12101825
  • Description: 2-Way F Metri-Pack 150 Series (BK)

Speaker - LF Door Midrange (Premium-UQA)

Pin

Wire Color

Circuit No.

Function

A

L-BU

1957

Left Front Midrange Speaker Output (-)

B

D-BU

1857

Left Front Midrange Speaker Output (+)

Speaker - LR


Object Number: 280768  Size: CH

Connector Part Information

  • OEM: 12052832
  • Service: 12101825
  • Description: 2-Way F Metri-Pack 150 Series (BK)

Speaker - LR

Pin

Wire Color

Circuit No.

Function

A

YE

116

Left Rear Speaker Output (-)

B

BN

199

Left Rear Speaker Output (+)

Speaker Assembly - RF Door (Base Radio)


Object Number: 130687  Size: CH

Connector Part Information

  • OEM: 12064867
  • Service: 88987981
  • Description: 2-Way F Metri-Pack 150 Series (WH)

Speaker Assembly - RF Door (Base Radio)

Pin

Wire Color

Circuit No.

Function

A

D-GN

117

Right Front Speaker Output (-)

B

L-GN

200

Right Front Speaker Output (+)

Speaker - RF Door (Premium-UQA)


Object Number: 130687  Size: CH

Connector Part Information

  • OEM: 12064867
  • Service: 88987981
  • Description: 2-Way F Metri-Pack 150 Series (WH)

Speaker - RF Door (Premium-UQA)

Pin

Wire Color

Circuit No.

Function

A

D-GN

117

Right Front Speaker Output (-)

B

L-GN

200

Right Front Speaker Output (+)

Speaker - RF Door Midrange (Premium-UQA)


Object Number: 280768  Size: CH

Connector Part Information

  • OEM: 12052832
  • Service: 12101825
  • Description: 2-Way F Metri-Pack 150 Series (BK)

Speaker - RF Door Midrange (Premium-UQA)

Pin

Wire Color

Circuit No.

Function

A

GN

1953

Right Front Midrange Speaker Output (-)

B

OG

1853

Right Front Midrange Speaker Output (+)

Speaker - RR


Object Number: 280768  Size: CH

Connector Part Information

  • OEM: 12052832
  • Service: 12101825
  • Description: 2-Way F Metri-Pack 150 Series (BK)

Speaker - RR

Pin

Wire Color

Circuit No.

Function

A

L-BU

115

Right Rear Speaker Output (-)

B

D-BU

46

Right Rear Speaker Output (+)

Steering Wheel Controls - Left


Object Number: 1333392  Size: CH

Connector Part Information

  • OEM: 50-57-9407
  • Service: See Catalog
  • Description: 7-Way F (BK)

Steering Wheel Controls - Left

Pin

Wire Color

Circuit No.

Function

1

YE

1327

DIC Fuel Signal

2

OG

1816

DIC Set/Reset Switch Signal

3

BK

230

Instrument Panel Lamps Dimming Control

4

BK

2250

Ground

5

D-GN/WH

1358

DIC Switch Signal

6

D-BU

894

DIC Toggle Switch Signal

7

--

--

Not Used

Steering Wheel Controls - Right


Object Number: 605507  Size: CH

Connector Part Information

  • OEM: 50-57-9406
  • Service: 89046732
  • Description: 6-Way F (BK)

Steering Wheel Controls - Right


Object Number: 605507  Size: CH

Connector Part Information

    • 50-57-9406
    • 6-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

WH

2283

12-Volt Reference

2

--

--

Not Used

3

BK

230

Instrument Panel Lamps Dimming Control

4

--

--

Not Used

5

BK

2250

Ground

6

L-GN

1011

Remote Radio Control Signal