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Wiring harness with interface module, black connectors and circuit board

iDatalink

iDatalink HRN-HRR-GM2 Harness with ADS-MRR Module

SKU CH-Y89M-HQAEM

Radio-replacement harness and interface module that installs an aftermarket receiver in 2010-newer GM vehicles while keeping steering-wheel controls, OnStar, factory amplifier and warning chimes

  • Product typeHarness
  • Key featuresEnables installation of an aftermarket receiver
  • Installs an aftermarket radio in select 2010+ GM vehicles
  • Keeps steering wheel audio controls working with the new head unit
  • Preserves factory OnStar, amplifier and warning chimes
  • Retains Bluetooth, USB and backup camera with iDatalink-ready radios
  • Supports Retained Accessory Power for continued accessory operation

GM Radio Replacement Harness

The iDatalink HRN-HRR-GM2 harness enables installation of an aftermarket receiver in select GM vehicles from 2010 and newer. It provides a universal connector on the radio side for plug-and-play use with compatible Maestro adapters. The harness retains steering wheel audio controls, factory OnStar, amplifier, and warning chimes. It also maintains Bluetooth, USB port, and backup camera functions with iDatalink-ready radios.

Vehicles Needing Maestro ADS-MRR

This harness suits owners of compatible GM vehicles who want to keep factory features while upgrading the head unit. It requires a separate Maestro ADS-MRR or ADS-MRR2 module to function. Builders who need a harness for non-GM vehicles or for GM models before 2010 should look at other options. Installers without the required Maestro module cannot complete the installation.

Requires Separate Maestro Module

The single specification that decides fitment is the requirement for a Maestro ADS-MRR or ADS-MRR2 interface module, which is sold separately. Without this module the harness cannot communicate with the vehicle data bus. The module supports select 2006-up vehicles across multiple brands but must be paired with this vehicle-specific harness. Confirm the correct module before purchase.

How it compares

Measured against everything we stock in Car Stereos & Multimedia Receivers, at today’s prices. Recalculated every night.

Price $191.99
Cheaper than about 56% of the 3,253 comparable items (median $212.99).

Specifications

Product
Brand nameiDatalink
Product typeHarness

Questions about this item

Does the GM2 harness include the Maestro ADS-MRR module or must it be purchased separately?

The product is sold as a bundle containing both the HRN-HRR-GM2 harness and the ADS-MRR interface module.

Should I choose the ADS-MRR or the newer ADS-MRR2 module for my GM vehicle?

The included module is the ADS-MRR; the harness is compatible with either ADS-MRR or ADS-MRR2, so the bundled unit works for supported GM models.

Will the harness keep my steering wheel audio controls and factory OnStar working after I fit an aftermarket receiver?

Yes, the harness retains steering wheel audio controls, factory OnStar, the amplifier and warning chimes when used with an iDatalink-ready radio.

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