---
product_id: 15788507
title: "PAC OS2-GM32 OnStar Radio Replacement Interface for Select Cadillac Vehicles"
brand: "pac"
price: "€ 189.79"
currency: EUR
in_stock: true
reviews_count: 6
url: https://www.desertcart.sk/products/15788507-pac-os2-gm32-onstar-radio-replacement-interface-for-select-cadillac
store_origin: SK
region: Slovakia
---

# 5.1 Digital Audio Plug & Play Vehicle Compatibility PAC OS2-GM32 OnStar Radio Replacement Interface for Select Cadillac Vehicles

**Brand:** pac
**Price:** € 189.79
**Availability:** ✅ In Stock

## Summary

> 🎉 Upgrade Your Ride with Effortless Sound!

## Quick Answers

- **What is this?** PAC OS2-GM32 OnStar Radio Replacement Interface for Select Cadillac Vehicles by pac
- **How much does it cost?** € 189.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/15788507-pac-os2-gm32-onstar-radio-replacement-interface-for-select-cadillac)

## Best For

- pac enthusiasts

## Why This Product

- Trusted pac brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful Sound:** On-board amplifier drives two 4W speakers in stereo for an immersive audio experience.
- • **Seamless Integration:** Effortlessly replaces factory radio while retaining OnStar functionality.
- • **Noise-Free Experience:** Communicates directly with OnStar to eliminate unwanted audio noise.
- • **Versatile Compatibility:** Works with or without Bose systems, ensuring a perfect fit for your audio needs.
- • **Hassle-Free Installation:** No cutting or splicing required—just plug and play!

## Overview

The PAC OS2-GM32 OnStar Radio Replacement Interface is designed for select Cadillac vehicles, allowing for a seamless transition from factory radio to a modern audio experience. It retains OnStar functionality, supports both Bose and non-Bose systems, and features a plug-and-play installation process, making it the ideal choice for audiophiles looking to enhance their driving experience.

## Description

The PAC OS-5 is a plug and play interface that all for the replacement of a GM GMLAN Factory radio. It maintains the operation of OnStar in vehicles with Bose sound systems, amplified audio systems, and also audio systems without an external amplifier. The OS-5 has on-board switching that allows audio from the OnStar system to play through the two front factory speakers. This interface retains all factory warning chimes, audible turn signal indicators, factory XM Radio, and rear parking assist system. This is an all-in-one interface that eliminates the needed for multiple harnesses in specific GM LAN Vehicles.

## Features

- Replacement interface for select GM Vehicles with OnStar, Bose, and GM LAN Data Bus
- Compatible with or without factory amplified audio system
- Can be used if the vehicle does not have OnStar
- Compatible with or without Bose systems
- Retains the 5.1 Digital audio system in select GM Vehicles
- Replaces factory radio in 2003¿2006 GM SUVs and trucks while retaining OnStar
- Plug and play, no cutting or splicing into factory plug
- PACOS2/PACOS2 Bose communicate directly with the OnStar module to prevent false triggering and eliminating unwanted audio noise
- On-board amplifier will drive two 4W speakers in stereo
- Use with the existing factory speakers or external speakers

## Images

![PAC OS2-GM32 OnStar Radio Replacement Interface for Select Cadillac Vehicles - Image 1](https://m.media-amazon.com/images/I/812q60k9bqL.jpg)

## Available Options

This product comes in different **Customer Package Type** options.

## Customer Reviews

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    GM adapter
  

*by O***0 on Reviewed in the United States on July 4, 2010*

works greats, had a few problems as no instructions come with it,  but call and email PAC very helpful and answered every question i had,  would recommend this product and anybody wanting to change radio in there GM truck and keep onstar and back-up sensors and turn clicking

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Four Stars
  

*by A***. on Reviewed in the United States on January 8, 2018*

Provides fluid opersti M to my updated radio head in my 02 Deville.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works Great
  

*by K***R on Reviewed in the United States on November 16, 2011*

This interface installed easy - I forgot to order the steering wheel control interface, but once I got that, it all went well.  When you use the OnStar, the relay shuts off the aftermarket stereo.  The door chime sounds really funny (compared to the OEM sound), but works fine.  Excellent product.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sk/products/15788507-pac-os2-gm32-onstar-radio-replacement-interface-for-select-cadillac](https://www.desertcart.sk/products/15788507-pac-os2-gm32-onstar-radio-replacement-interface-for-select-cadillac)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-31*