---
product_id: 60765709
title: "Maestro HRN-RR-GM4 Plug and Play T-Harness for GM4 Vehicles, with Speaker"
brand: "maestro"
price: "$108.92"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/60765709-maestro-hrn-rr-gm4-plug-and-play-t-harness-gm4
store_origin: US
region: United States of America
---

# Steering Control Bluetooth Ready Plug & Play Maestro HRN-RR-GM4 Plug and Play T-Harness for GM4 Vehicles, with Speaker

**Brand:** maestro
**Price:** $108.92
**Availability:** ✅ In Stock

## Summary

> 🎉 Elevate Your Drive with Maestro!

## Quick Answers

- **What is this?** Maestro HRN-RR-GM4 Plug and Play T-Harness for GM4 Vehicles, with Speaker by maestro
- **How much does it cost?** $108.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/60765709-maestro-hrn-rr-gm4-plug-and-play-t-harness-gm4)

## Best For

- maestro enthusiasts

## Why This Product

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

## Key Features

- • **Easy Installation:** Designed for a hassle-free setup in select GM vehicles.
- • **Bluetooth Hands-Free:** Stay connected without distractions.
- • **OnStar Compatibility:** Retain OnStar functionality for safety and convenience.
- • **Seamless Integration:** Effortlessly connect your iDatalink-compatible stereo.
- • **Steering Wheel Control:** Keep your hands on the wheel while managing audio.

## Overview

The Maestro HRN-RR-GM4 Plug and Play T-Harness is engineered for select GM vehicles, allowing you to seamlessly connect an iDatalink-compatible car stereo while retaining essential features like steering wheel controls, OnStar, and Bluetooth hands-free operation. Experience a modern audio upgrade without sacrificing functionality.

## Description

Maestro HRN-RR-GM4 Plug and Play T-Harness for GM4 Vehicles, with Speaker

## Features

- Connect an iDatalink-compatible car stereo and retain steering wheel controls and other features in select GM-made vehicles
- Allows installation of a new receiver with an iDatalink port in select GM vehicles (also requires the Maestro ADS-MRR module)
- Retains the use of your steering wheel audio controls
- Retains OnStar and Bluetooth hands-free operation

## Images

![Maestro HRN-RR-GM4 Plug and Play T-Harness for GM4 Vehicles, with Speaker - Image 1](https://m.media-amazon.com/images/I/71+DlTQGaML.jpg)

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**Shop now:** [https://www.desertcart.us/products/60765709-maestro-hrn-rr-gm4-plug-and-play-t-harness-gm4](https://www.desertcart.us/products/60765709-maestro-hrn-rr-gm4-plug-and-play-t-harness-gm4)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-22*