GM Service Manual Online
For 1990-2009 cars only
Table 1: Radio-C1
Table 2: Radio-C2

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

OG

1044

Radio Class 2 Serial Data

A2

--

--

Not Used

A3

PU

493

Rear Seat Audio Enable Signal (GMT 800 lux only, Radio On Signal)

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

B4-B7

--

--

Not Used

B8

BN

599

Left Rear Low Level Audio Signal (+)

B9

D-GN/WH

1547

Rear Low Level Audio Signal (-)

B10

OG/BK

1546

Front Low Level Audio Signal (-)

B11

L-GN

512

Right Front Low Level Audio Signal (+)

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-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 (+)