PAC OS2-GM32X User manual

Radio Replacement Interface with OnStar Retention for
select General Motors Vehicles with 32-Pin Connector
© 2017 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
P ifi A C ti
Page 1
Rev. 051517
OS2-GM32X
Introduction & Features
Important Notes
Wiring Connection Chart
Illustration / Schematic
The OS2-GM32X interface allows the replacement of a factory radio in select General Motors vehicles with Class II radios. Using
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Green 3DUNLQJ%UDNH2XWSXW
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Brown 0XWH2XWSXW
Brown / White
Loop
Mute Loop
Interface Connector
Yellow %DWWHU\Y
%ODFN Ground
Blue $QWHQQD2Q,QSXW
White )URQW/LQSXW
:KLWH%ODFN Front L - input
Gray )URQW5LQSXW
*UD\%ODFN )URQW5LQSXW
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Vehicle Connector
Aftermarket Radio
Connections
To Vehicle
Connector
Connect to SWC Interface. Program for Version 2.
To optional SWC interface
Acc On
LED
* These wires may not be present in
all vehicle harnesses.

Radio Replacement Interface with OnStar Retention for
select General Motors Vehicles with 32-Pin Connector
© 2017 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
P ifi A C ti
Page 2
Rev. 051517
OS2-GM32X
Installation Steps
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PLEASE NOTE: If you cut the mute loop be sure to insulate these wires properly as they are part of a 12v circuit. Do
not connect either side of this loop to your aftermarket radio.
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vehicle.
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Steering Wheel Control Output Connector
1. The harness has a SWC output connector. For ease of
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2. When using this SWC output connector with the
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3. When using this SWC output connector with an SWI-
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Aftermarket Radio
Connections
Connect to SWC Interface. Program for Version 2.
To optional SWC interface
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1
4
2
3
Chime Volume Adjustment
Pacific Accessory Corporation
Solid Accessory On
Rapid Blink OnStar Active
Slow Blink SWC Button Pressed
Off Accessory Off
LED Legend
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