PAC OS-4 Factory Integration Adapter
Connect a new car stereo and retain safety warning chimes, OnStar®, rear seat controls, the factory amp and XM tuner in select 2006-up GM vehicles
Our take on the PAC OS-4 Factory Integration Adapter
PAC's OS-4 interface lets you replace the factory radio in select 2006-up GM vehicles with premium or Bose® audio systems, while retaining use of OnStar®, all factory warning chimes, and audible turn signal indicators. You'll also retain the use of your factory-installed XM satellite radio, as well as the 5.1 audio system in equipped Cadillac vehicles. Warranty: 1 year.
Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this adapter will work with your vehicle.
Note: Most vehicles will require additional installation parts please identify your vehicle if you haven’t done so, then check here for a list of parts. You can also call an Advisor for more information.
What's in the box?
Download owner's manual
- OS-4 GM LAN OnStar Retention Radio Replacement interface
- CM-X Chime module
- B-BAA20 GM antenna adapter (9.5")
- OS-NAV harness (8.5")
- OS-GMLAN29 harness (9.5")
- OS-RADPWRAUDIO harness
- Harness with center/sub RCA plugs (31")
- Installation instructions
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Overview: The PAC OS-4 allows you to replace your vehicle's original factory radio with an upgraded aftermarket radio. It interfaces seamlessly with the vehicle's computer data bus system.
The interface will maintain operation of the OnStar system in vehicles with Bose Audio Systems, amplified audio systems, and systems without amplifiers. The OS-4 has on-board switching that allows
audio from the OnStar system to play through the two front factory speakers. All warning chimes, audible turn signals, Bluetooth, and the Vehicle Rear Parking Assist system (if equipped) will be
Compatibility: The OS-4 is compatible with the following General Motors vehicles
(as of 1/4/2012):
|Vibe (for OnStar retention only)
Note: Please consult the
Crutchfield Car Selector for your vehicle's compatibility.
Compatibility Notes: When the OS-4 is installed, the following conditions will be applied:
- The OS-4 will retain the use of the factory-installed XM receiver. Factory RSE (rear-seat entertainment) controls must be present for this feature.
- This interface can be used to interface with the Bose amplifier even
if the vehicle does not have OnStar.
- The interface will work in amplified or non-amplified audio systems.
- This interface retains the 5.1 audio system in equipped Cadillac vehicles.
- Built-in Smart Mute circuitry will play OnStar through the front speakers and allow the RSE audio jacks continue playing the audio source selected by the RSE controls.
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PAC OS-4 Factory Integration Adapter
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