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PAC OS2-GM32X Wiring Interface

Retains OnStar®, Bose® amplifier, and warning chimes when replacing factory radio in select 1998-2005 Cadillac vehicles

Item # 541OSGM32X

This PAC OS2-GM32X interface allows you to connect your new radio to the existing wiring in your vehicle and keep...

Read more from Crutchfield writer, Bob B.

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About the PAC OS2-GM32X Wiring Interface

PAC OS2-GM32X

This PAC OS2-GM32X interface allows you to connect your new radio to the existing wiring in your vehicle and keep your factory features working. You'll keep the features you've become accustomed to such as safety warning chimes, the Bose amplified audio system, Retained Accessory Power (RAP), and the OnStar® system. If you have a standard Bose system, you'll be able to fade from the front to rear speakers with your new car stereo; if you have the Premium Bose system, you'll lose that ability.

PAC OS2-GM32X

This PAC OS2-GM32X interface allows you to connect your new radio to the existing wiring in your vehicle and keep your factory features working. You'll keep the features you've become accustomed to such as safety warning chimes, the Bose amplified audio system, Retained Accessory Power (RAP), and the OnStar® system. If you have a standard Bose system, you'll be able to fade from the front to rear speakers with your new car stereo; if you have the Premium Bose system, you'll lose that ability.

The steering wheel controls for OnStar will still work, but you'll need a steering wheel control adapter (sold separately) to connect your new stereo to the Cadillac's steering wheel controls. This interface features a connector that plugs directly into PAC steering wheel control adapters, saving you some time and effort. You'll also lose the factory XM receiver.

Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this interface is compatible with your vehicle. Warranty: 1 year.

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What's in the box:

  • Radio replacement interface module
  • Wiring harness
  • Installation Instructions

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PAC OS2-GM32X Wiring Interface Reviews

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More details on the PAC OS2-GM32X Wiring Interface

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Features

Radio Replacement Interface: The PAC OS2-GM32X radio replacement interface allows your to replace the factory stereo in select Cadillac vehicles with an aftermarket head unit and maintain operation of factory features such as OnStar, Bose amplifier, RAP, and warning chimes. It also supports PAC steering wheel control adapters (sold separately).

Vehicle Compatibility: The PAC OS2-GM32X is compatible with select 2000-2005 Cadillac vehicles with GM Class II data-bus system and 32-pin connector (with or without OnStar, and with Bose)

Make  Model Year
Cadillac Deville 2000-2005
Eldorado 2000-2002
Seville 2000-2003

Retained Features: The PAC OS2-GM32X radio replacement interface retains the following factory features of your vehicle.

  • OnStar: The OS2-GM32X retains your vehicle's factory OnStar system. It allows audio from the OnStar system to play through the vehicle's two front speakers when OnStar is active, and mutes the output of your new aftermarket radio.
  • Bose Amplifier: The PAC radio replacement interface lets you retain your vehicle's factory Bose amplifier. Standard Bose amplifiers will continue to fade front to rear. Due to the design of Premium Bose amplifier systems, there is currently no way of fading from front to rear with an aftermarket radio.
  • RAP: Your aftermarket head unit will continue to operate with the vehicle's RAP (Retained Accessory Power) system. The aftermarket radio will stay on after the vehicle's key is turned off and then stays on for approximately 10 minutes or until a door is opened.
  • Safety & Warning Chimes: The vehicle's factory safety and warning chimes are also fully retained.
Note: The OS2-GM32X does not retain the factory XM Satellite Radio receiver; you will lose this option when the factory radio is replaced with an aftermarket stereo.

+12V/10A Accessory Output: The OS2-GM32X provides a +12V/10A switched accessory output; no more searching for switched +12-volts in the fuse box or kick panel.

Navigation Outputs: The PAC OS2-GM32X provides navigation outputs (VSS, Parking Brake, and Reverse) to help ease the installation process of an aftermarket navigation radio.

Optional Steering Wheel Control Adapter: The OS2-GM32X radio replacement interface supports PAC's SWI-CP2 or SWI-RC steering wheel control adapter (both sold separately), allowing you to retain your vehicle's factory steering wheel controls. The included wiring harness plugs directly into the compatible SWC adapter. You will need to program the SWC adapter.

Wiring Connection Chart: The included harness features the following wires which will need to be hardwired (solder or crimped) to your aftermarket head unit's wiring harness.

Wire Color Function
Red +12 Volt Accessory (10A)
Yellow +12 Volt Constant
Black Ground
Blue Power Antenna
Orange Illumination
White Left Front Speaker +
White/Black Left Front Speaker -
Gray Right Front Speaker +
Gray/Black Right Front Speaker -
Green Left Rear Speaker +
Green/Black Left Rear Speaker -
Purple Right Rear Speaker +
Purple/Black Right Rear Speaker -
Pink VSS (Vehicle Speed Signal)
Violet/White Reverse Output (-)
Green Parking Brake (-)
Brown Mute (-)
Note: Installation tools, hardware, & accessories are not included & sold separately.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
necessary for install [ Erik  Jan 08, 2019 ]
A
Recommended by your adviser JC [ HELDER  Jan 07, 2019 ]
A
To retain the factory BOSE system. [ Shaun  Dec 18, 2018 ]
A
I need this interface to get everything wired up and enjoy the features that I would have lost if I didn't have this item [ James  Jun 12, 2018 ]
A
Upgrade to my existing PAC adapter. [ MIKE  Dec 09, 2017 ]
SHOW MORESHOW LESS

3 questions already asked

Q
I seem to be missing something, where do the rear speaker wires connect from the aftermarket head unit?
[ Matthew  Oct 25, 2017 ]
2 answers
A
I also received the PAC OS2-GM32X. The green and purple wires Larry mentioned do not exist on this interface. Its documentation states that fader will not work. Does this mean that the rear speakers on your vehicle won't work, since there is no way to connect them from your radio through this interface?
[ Gus I  Nov 03, 2017 ]
A
The PAC OS2-GM32X Interface includes the following wires for rear speaker connections: Green=Left Rear Speaker + Green/Black=Left Rear Speaker - Purple=Right Rear Speaker + Purple/Black=Right Rear Speaker - These will need to be connected to the corresponding rear speaker wires from your aftermarket head unit's harness. For more details or to discuss further, please feel free to contact an Advisor directly by phone (888.955.6000) or online chat. Thanks!
[ Larry  Oct 30, 2017 ]  Staff
Q
is this a standalone to connecting the aftermarket radio to the stock radio plug? like without any ampm bypass or anything?
[ Travis  Oct 24, 2017 ]
1 answer
A
This integration harness is designed to retain the stock Bose amplifier in compatible vehicles: Cadillac Deville 2000-2005 Eldorado 2000-2002 Seville 2000-2003
[ Ryan  Oct 25, 2017 ]  Staff
Q
I ordered the previous model that came with the awsc1 steering wheel control wiring. Will I need a different wiring set?
[ Robert  Oct 15, 2017 ]
1 answer
A
The PAC OS2-GM32X does not have the ability to retain factory steering wheel controls so you will need a separate adapter (like the Axxess ASWC-1 or PAC SWI-CP2) and a compatible aftermarket stereo for this capability.
[ Ryan  Oct 20, 2017 ]  Staff

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