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GM OnStar Interface (OS3)
This plug and play interface will allow the retention of OnStar® in GMLAN equipped vehicles. Door chimes, audible blinker indication and Rear Park Assist (RPA) is all retained when this interface is used!
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Great Product
The PAC OS-3 is a must have product when adding an after market stereo to your GM vehicle. I highly recommend it. It keeps all of the factory features such as chimes, on star and it also has the steering wheel control wires so you don't have to look for them behind the steering wheel (Must add Optional harness). Its simple to install I did myself in about 1 hour and it works great. HIGHLY RECOMMENDED.
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good product
works good installed a clarion nx409 to it.. it has its own speaker which is the only thing i dislike
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.