About the PAC OS2-GM32X Wiring Interface
PAC OS2-GM32X
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.
What's in the box:
PAC OS2-GM32X Wiring Interface owner's manual
- Radio replacement interface module
- Wiring harness
- Installation Instructions
Featured review
Worked great instruction made it easy to install
Kenneth from Chicago, IL
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REVIEWS
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PAC OS2-GM32X Wiring Interface reviews
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PAC OS2-GM32X Wiring Interface
Crutchfield customer from San Antonio, TX on 6/11/2019
Plug and play real easy set up anything else would be uncivilized, Superb product totally recommend it
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0 of 0 found this helpful
PAC OS2-GM32X Wiring Interface
Crutchfield customer from Jacksonville, FL on 3/18/2019
2004 Cadillac DeVille
0 of 0 found this helpful
Mostly happy
Crutchfield customer from Shrewsbury, PA on 1/25/2019
2004 Cadillac DeVille
When replacing an original stereo unit in an 04 Deville, the wiring directions are not very clear. After a phone call to Crutchfield it was explained to use only the front speaker leads from the Sony Stereo unit and cap the rear leads off. Everything works great except you can not fade from front to rear unless you add another set of speakers for the back and connect the rear leads to those speakers.
Pros: all is pro except for the 1 con
Cons: Can not use fader.
0 of 0 found this helpful
Fit exactly 2002 Deville DTS
Michael from Loveland, OH on 1/14/2019
2002 Cadillac DeVille
Fit exactly 2002 Deville DTS. I was surprised by the two speaker wiring, but a quick tech call cleared that up. Bose system is only using two channels out to the amp. Only difficulty was my fault with not understanding the mute loop. I just removed my mute wire from the radio to harness and then everything worked great.
Pros: Plug and play. Help line is very helpful.
Cons: The chime is just pathetic. It is annoying. But that is it's purpose.
0 of 0 found this helpful
Works as advertised
Kenneth from Chicago, IL on 11/22/2018
2002 Cadillac DeVille
Worked great instruction made it easy to install
Pros: Easy to install directions easy to understand retained all features
Cons: Non
0 of 0 found this helpful
PAC OS2-GM32X Wiring Interface
Crutchfield customer from N Charleston, SC on 10/15/2018
2004 Cadillac Seville
Everything works! Except for the steering wheel volume control so that was disappointing.
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0 of 0 found this helpful
PAC OS2-GM32X Wiring Interface
Crutchfield customer from Pickens, SC on 8/6/2018
2002 Cadillac DeVille
The interface works great and is a good product. The installation instructions are very limited and vague. A wiring diagram would have been helpful to determine which wires were not needed.
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1 of 1 found this helpful
Works Great
Allison from Oxon Hill, MD on 7/11/2018
2003 Cadillac DeVille
It was exactly what I needed and was delivered as promised! Love it!
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0 of 0 found this helpful
PAC OS2-GM32X Wiring Interface
Mike from Linden, TN on 7/5/2018
2002 Cadillac Seville
Will work fine unless your factory amp is bad. Then you will have to run wires to your factory amp and bypass it.
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0 of 0 found this helpful
Clean install
Preston from Chandler, IN on 6/15/2018
2003 Cadillac DeVille
Pretty straight forward install.
Pros: Straight forward install on all of the items.
Cons: None
0 of 0 found this helpful
PAC OS2-GM32X Wiring Interface
Crutchfield customer from South Jordan, UT on 3/26/2018
1999 Cadillac Seville
It works however, the wiring diagram sent with the module isn't intuitive enough to label the color code and functionality of each wire. Also, the chime function is cheap sounding and not genuine. Otherwise this product would be rated better had it not been for those minor issues.
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0 of 1 found this helpful
Best Customer Support
Andrea from MI on 2/9/2018
2004 Cadillac Seville
I had installed a Kenwood BT HD receiver into my husband's 05 Cadillac. After installing and modifying the dash, the receiver would not work. I called Crutchfield and spoke to Dolly, who explained to me that certain vehicles require an interface to communicate with the vehicles command system. I received the interface in 2 days, soldiered it in, and to my surprise, perfection! I have purchased all of our car audio components from Crutchfield and always will. They provide excellent instructions and have the best tech support. Thank you again Crutchfield Team!
Pros: Easy install Clear instructions
Cons: None
0 of 0 found this helpful
PAC OS2-GM32X Wiring Interface
Robert from Muncie, IN on 2/7/2018
2002 Cadillac DeVille
0 of 0 found this helpful
PAC OS2-GM32X Wiring Interface
Benjamin from Jacksonville, NC on 1/9/2018
2000 Cadillac DeVille
This item made the stereo install so simple and great.. .. ..
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0 of 0 found this helpful
PAC OS2-GM32X Wiring Interface
Crutchfield customer from Cedar Park, TX on 11/21/2017
Seamless with new audio system, works great very satisfied. Replaced a 16 yr old audio system many thumbs up on the product.
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0 of 0 found this helpful
More details on the PAC OS2-GM32X Wiring Interface
Product Research
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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