GM Service Manual Online
For 1990-2009 cars only
Table 1: Audio Amplifier (U85)
Table 2: Digital Radio Receiver (U2K)
Table 3: Radio, C1
Table 4: Radio, C2 (U2K)
Table 5: Speaker - LF Tweeter (U85)
Table 6: Speaker - LF (U85)
Table 7: Speaker - LF (UQ8)
Table 8: Speaker - LR (UQ8)
Table 9: Speaker - LR (U85)
Table 10: Speaker - RF Tweeter (U85)
Table 11: Speaker - RF (UQ8)
Table 12: Speaker - RF (U85)
Table 13: Speaker - RR (U85)
Table 14: Speaker - RR (UQ8)

Audio Amplifier (U85)


Object Number: 73222  Size: CH

Connector Part Information

    • 12110115
    • 32-Way F Micro-Pack 100 Series (DK BLU)

Pin

Wire Color

Circuit No.

Function

E1

LT GRN

200

Right Front Speaker Output (+)

E2

TAN

201

Left Front Speaker Output (+)

E3

GRY

118

Left Front Speaker Output (-)

E4

LT BLU

115

Right Rear Speaker Output (-)

E5

DK BLU

46

Right Rear Speaker Output (+)

E6

BRN

199

Left Rear Speaker Output (+)

E7

YEL

116

Left Rear Speaker Output (-)

E8

BLK

750

Ground

E9

BLK

750

Ground

E10

DK GRN

145

Amplifier Control

E11

ORN

1040

Battery Positive Voltage - Coupe

ORN/

BLK

1040

Battery Positive Voltage - Sedan

E12

ORN

1040

Battery Positive Voltage - Coupe

ORN/

BLK

1040

Battery Positive Voltage - Sedan

E13

BLK

1856

Left Front Tweeter Speaker Output (+)

E14

YEL

1956

Left Front Tweeter Speaker Output (-)

E15

DK BLU

1857

Left Front Midrange Speaker Output (+)

E16

LT BLU

1957

Left Front Midrange Speaker Output (-)

F1

DK GRN

117

Right Front Speaker Output (-)

F2

LT GRN

1852

Right Front Tweeter Speaker Output (+)

F3

PPL

1952

Right Front Tweeter Speaker Output (-)

F4

PPL

1958

Left Rear Tweeter Speaker Output (-)

F5

RED

1858

Left Rear Tweeter Speaker Output (+)

F6

DK GRN

1953

Right Front Midrange Speaker Output (-)

F7

ORN

1853

Right Front Midrange Speaker Output (+)

F8

PPL

1672

Gain Control Signal

F9

--

--

Not Used

F10

YEL

1949

Right Rear Tweeter Speaker Output (-)

F11

WHT

1854

Right Rear Tweeter Speaker Output (+)

F12

--

--

Not Used

F13

LT BLU/

BLK

315

Right Subwoofer Speaker Output (-)

F14

DK GRN

1795

Right Subwoofer Speaker Output (+)

F15

DK BLU/

WHT

346

Left Rear Subwoofer Speaker Output (+)

F16

LT GRN/

BLK

1794

Left Rear Subwoofer Speaker Output (-)

Digital Radio Receiver (U2K)


Object Number: 823325  Size: CH

Connector Part Information

    • 15394150
    • 16-Way F Micro-Pack 64  Series (BLK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

BRN/WHT

367

Remote Radio Left Audio Signal

3

DK GRN/WHT

368

Remote Radio Right Audio Signal

4-8

--

--

Not Used

9

BLK/WHT

151

Ground

10

BLK/WHT

372

Audio Commoon

11

BARE

1705

Drain Wire

12-14

--

--

Not Used

15

PPL

1807

Class 2 Serial Data

16

ORN

1740

Battery Positive Voltage

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

PPL

1807

Class 2 Serial Data

A2-A5

--

--

Not Used

A6

PNK

314

Radio On Signal

A7

LT GRN

1011

Remote Radio Control Signal

A8

TAN

201

Left Front Speaker Output (+)

A9

GRY

118

Left Front Speaker Output (-)

A10

LT BLU

115

Right Rear Speaker Output (-)

A11

DK BLU

46

Right Rear Speaker Output (+)

A12

BLK/WHT

151

Ground

B1

ORN

1740

Battery Positive Voltage

B2

--

--

Not Used

B3

DK GRN

145

Amplifier Control

B4

GRY

8

Instrument Panel Lamp Supply Voltage 1

B5

BLK

250

Ground

B6

PPL

1672

Gain Control Signal

B7

--

--

Not Used

B8

BRN

199

Left Rear Speaker Output (+)

B9

YEL

116

Left Rear Speaker Output (-)

B10

DK GRN

117

Right Front Speaker Output (-)

B11

LT GRN

200

Right Front Speaker Output (+)

B12

BRN

9

Park Lamp Supply Voltage

Radio, C2 (U2K)


Object Number: 73151  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A-G

--

--

Not Used

H

DK GRN/WHT

368

Remote Radio Right Audio Signal

J

BRN/WHT

367

Remote Radio Left Audio Signal

K

BLK/WHT

372

Remote Radio Audio Output (-)

L-M

--

--

Not Used

Speaker - LF Tweeter (U85)


Object Number: 35441  Size: CH

Connector Part Information

    • 12059250
    • 2-Way M Metri-Pack 150 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

YEL

1956

Left Front Tweeter Speaker Output (-)

B

BLK

1856

Left Front Tweeter Speaker Output (+)

Speaker - LF (U85)


Object Number: 130724  Size: CH

Connector Part Information

    • 12064869
    • 2-Way F Metri-Pack 150 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

LT BLU

1957

Left Front Midrange Speaker Output (-)

B

DK BLU

1857

Left Front Midrange Speaker Output (+)

Speaker - LF (UQ8)


Object Number: 82383  Size: CH

Connector Part Information

    • 12047662
    • 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 (+)

Speaker - LR (UQ8)


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 (U85)


Object Number: 130637  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

PPL

1958

Left Rear Tweeter Speaker Output (-)

B

RED

1858

Left Rear Tweeter Speaker Output (+)

C

LT GRN/

BLK

1794

Left Rear Subwoofer Speaker Output (-)

D

DK BLU/

WHT

346

Left Rear Subwoofer Speaker Output (+)

Speaker - RF Tweeter (U85)


Object Number: 35441  Size: CH

Connector Part Information

    • 12059250
    • 2-Way M Metri-Pack 150 Series (NAT)

Pin

Wire Color

Circuit No.

Function

A

PPL

1952

Right Front Tweeter Speaker Output (-)

B

LT GRN

1852

Right Front Tweeter Speaker Output (+)

Speaker - RF (UQ8)


Object Number: 82383  Size: CH

Connector Part Information

    • 12047662
    • 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 (+)

Speaker - RF (U85)


Object Number: 130724  Size: CH

Connector Part Information

    • 12064869
    • 2-Way F Metri-Pack 150 Series (BLU)

Pin

Wire Color

Circuit No.

Function

A

DK GRN

1953

Right Front Midrange Speaker Output (-)

B

ORN

1853

Right Front Midrange Speaker Output (+)

Speaker - RR (U85)


Object Number: 130637  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

YEL

1949

Right Rear Tweeter Speaker Output (-)

B

WHT

1854

Right Rear Tweeter Speaker Output (+)

C

LT BLU/

BLK

315

Right Subwoofer Speaker Output (-)

D

DK GRN

1795

Right Subwoofer Speaker Output (+)

Speaker - RR (UQ8)


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 (+)