GM Service Manual Online
For 1990-2009 cars only
Table 1: Amplifier C1 (U65)
Table 2: Amplifier C2 (U65)
Table 3: Digital Radio Receiver (U2K)
Table 4: Radio C1
Table 5: Radio C2
Table 6: Speaker - LF
Table 7: Speaker - LF (Tweeter)
Table 8: Speaker - LR
Table 9: Speaker - RF
Table 10: Speaker - RF (Tweeter)
Table 11: Speaker - RR
Table 12: Speaker - Subwoofer (U65)
Table 13: Steering Wheel Control Switch - Left (K34 w/o UK3)
Table 14: Steering Wheel Control Switch - Left (K34/UK3)
Table 15: Steering Wheel Control Switch - Right (K34 w/o UK3)
Table 16: Steering Wheel Control Switch - Right (K34/UK3)

Amplifier C1 (U65)


Object Number: 130690  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

D-GN

117

Right Front Speaker Output (-)

A2

L-GN

200

Right Front Speaker Output (+)

A3

L-BU

115

Right Rear Speaker Output (-)

A4

D-BU

46

Right Rear Speaker Output (+)

A5

OG

360

Amplifier Control

A6

PU

5747

Amplifier Sense Signal

A7-A8

--

--

Not Used

A9

L-GN

117

Right Front Speaker Output (-)

A10

D-GN

200

Right Front Speaker Output (+)

A11

TN

115

Right Rear Speaker Output (-)

A12

D-BU

46

Right Rear Speaker Output (+)

B1

GY

118

Left Front Speaker Output (-)

B2

TN

201

Left Front Speaker Output (+)

B3

YE

116

Left Rear Speaker Output (-)

B4

BN

199

Left Rear Speaker Output (+)

B5-B8

--

--

Not Used

B9

D-GN

118

Left Front Speaker Output (-)

B10

TN

201

Left Front Speaker Output (+)

B11

BN

116

Left Rear Speaker Output (-)

B12

BN/WH

199

Left Rear Speaker Output (+)

Amplifier C2 (U65)


Object Number: 73158  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A

L-GN/BK

1794

Subwoofer Speaker Coil 2 Output (-)

B

D-BU/WH

346

Subwoofer Speaker Coil 2 Output (+)

C

BK

850

Ground

D

RD/WH

2340

Battery Positive Voltage

E-F

--

--

Not Used

G

D-GN

1795

Subwoofer Speaker Coil 1 Output (+)

H

L-BU/BK

315

Subwoofer Speaker Coil 1 Output (-)

Digital Radio Receiver (U2K)


Object Number: 850856  Size: CH

Connector Part Information

    • OEM Assembly: 15394150
    • OEM Connector Body: 15411434
    • Service: See Catalog
    • 16-Way F Micro-Pack 64 Series (BK)

Pin

Wire Color

Circuit No.

Function

1

--

--

Not Used

2

BN/WH

367

Radio Left Audio Signal (+)

3

D-GN/WH

368

Radio Right Audio Signal (+)

5-8

--

--

Not Used

9

BK

750

Ground

10

YE/WH

372

Audio Common

11

GY

813

Drain Wire

12-14

--

--

Not Used

15

PU

1807

Class 2 Serial Data

16

RD/WH

440

Battery Positive Voltage

Radio C1


Object Number: 130690  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

A1

GY

118

Left Front Speaker Output (-)

A2

TN

201

Left Front Speaker Output (+)

A3

L-BU

115

Right Rear Speaker Output (-)

A4

D-BU

46

Right Rear Speaker Output (+)

A5

BN

199

Left Rear Speaker Output (+)

A6

YE

116

Left Rear Speaker Output (-)

A7

L-GN

200

Right Front Speaker Output (+)

A8

D-GN

117

Right Front Speaker Output (-)

A9

D-BU

1796

Steering Wheel Controls Signal (UK3)

A10

WH/BK

644

10-Volt Reference (UK3)

A11

--

--

Not Used

A12

BK/WH

151

Ground

B1

RD/WH

2140

Battery Positive Voltage

B2

PU

5747

Amplifier Sense Signal (U65)

B3-B5

--

--

Not Used

B6

OG

360

Amplifier Feed (U65)

B7-B8

--

--

Not Used

B9

PU

1807

Class 2 Serial Data

B10-B12

--

--

Not Used

Radio C2


Object Number: 73151  Size: CH

Connector Part Information

    • OEM: 12064799
    • Service: 15305996
    • 12-Way F Micro-Pack 100 Series (BK)

Pin

Wire Color

Circuit No.

Function

A-G

--

--

Not Used

H

D-GN/WH

368

Right Audio Signal (+)

J

BN/WH

367

Left Audio Signal (+)

K

YE/WH

372

Audio Common

L

OG/BK

2061

Navigation Audio Mono Signal (-) (UE1)

M

PK/BK

2062

Navigation Audio Mono Signal (+) (UE1)

Speaker - LF


Object Number: 1282875  Size: CH

Connector Part Information

    • OEM: 12186719
    • Service: See Catalog
    •  2-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

GY

118

Left Front Speaker Output (-)

2

TN

201

Left Front Speaker Output (+)

Speaker - LF (Tweeter)


Object Number: 1282877  Size: CH

Connector Part Information

    • OEM: 15305566
    • Service: See Catalog
    •  2-Way F (NA)

Pin

Wire Color

Circuit No.

Function

1

GY

118

Left Front Speaker Output (-)

2

TN

201

Left Front Speaker Output (-)

Speaker - LR


Object Number: 1282875  Size: CH

Connector Part Information

    • OEM: 12186719
    • Service: See Catalog
    •  2-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

YE

116

Left Rear Speaker Output (-)

2

BN

199

Left Rear Speaker Output (+)

Speaker - RF


Object Number: 1282875  Size: CH

Connector Part Information

    • OEM: 12186719
    • Service: See Catalog
    •  2-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

GY

117

Right Front Speaker Output (-)

2

TN

200

Right Front Speaker Output (+)

Speaker - RF (Tweeter)


Object Number: 1282877  Size: CH

Connector Part Information

    • OEM: 15305566
    • Service: See Catalog
    •  2-Way F (NA)

Pin

Wire Color

Circuit No.

Function

1

GY

117

Right Front Speaker Output (-)

2

TN

200

Right Front Speaker Output (+)

Speaker - RR


Object Number: 1282875  Size: CH

Connector Part Information

    • OEM: 12186719
    • Service: See Catalog
    •  2-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

YE

115

Right Rear Speaker Output (-)

2

BN

46

Right Rear Speaker Output (+)

Speaker - Subwoofer (U65)


Object Number: 130637  Size: CH

Connector Part Information

    • OEM: 12064760
    • Service: 12085208
    • 4-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A

D-BU/WH

346

Subwoofer Speaker Coil 2 Output (+)

B

L-GN/BK

1794

Subwoofer Speaker Coil 2 Output (-)

C

D-GN

1795

Subwoofer Speaker Coil 1 Output (+)

D

L-BU/BK

315

Subwoofer Speaker Coil 1 Output (-)

Steering Wheel Control Switch - Left (K34 w/o UK3)


Object Number: 605502  Size: CH

Connector Part Information

    • OEM: 50-57-9404
    • Service: See Catalog
    •  4-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

BK/WH

151

Ground

2

GY

8

Instrument Panel Lamp Supply Voltage

3

PK

1339

Ignition 1 Voltage

4

GY

397

Cruise Control On Switch Signal

Steering Wheel Control Switch - Left (K34/UK3)


Object Number: 605507  Size: CH

Connector Part Information

    • OEM: 50-57-9406
    • Service: See Catalog
    •  6-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

L-GN

1011

Remote Radio Control Signal

2

GY

8

Instrument Panel Lamp Supply Voltage

3

BK/WH

151

Ground

4

D-BU

1796

Steering Wheel Controls Signal

5

PK

1339

Ignition 1 Voltage

6

OG

397

Cruise Control On Switch Signal

Steering Wheel Control Switch - Right (K34 w/o UK3)


Object Number: 605511  Size: CH

Connector Part Information

    • OEM: 50-57-9405
    • Service: See Catalog
    •  5-Way F (BK)

Pin

Wire Color

Circuit No.

Function

1

BK/WH

151

Ground

2

GY

8

Instrument Panel Lamp Supply Voltage

3

GY

397

Cruise Control On Switch Signal

4

GY

1884

Cruise Control Set/Coast/Resume/Accelerate Switch Signal

5

--

--

Not Used

Steering Wheel Control Switch - Right (K34/UK3)


Object Number: 1333392  Size: CH

Connector Part Information

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

Pin

Wire Color

Circuit No.

Function

1

WH/BK

644

10-Volt Reference

2

GY

8

Instrument Panel Lamp Supply Voltage

3

BK/WH

151

Ground

4

D-BU

1796

Steering Wheel Controls Signal

5

L-GN

1011

Remote Radio Control Signal

6

OG

397

Cruise Control On Switch Signal

7

GY

1884

Cruise Control Set/Coast/Resume/Accelerate Switch Signal