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iDatalink HRN-HRR-GM3 harness and ADS-MRR2 module in plastic housings with multi-pin connectors

iDatalink

iDatalink HRN-HRR-GM3 Radio Replacement Harness with ADS-MRR2 Module

SKU CH-9VEN-WP0WH

Radio replacement harness for select GM vehicles from 2014 that retains steering wheel controls, warning chimes, OnStar and the factory backup camera

  • Product typeHarness
  • Key featuresRequires Maestro ADS-MRR or ADS-MRR2 module for full functio
  • Retains steering wheel controls and factory warning chimes
  • Maintains OnStar with Bluetooth functionality
  • Preserves factory backup camera
  • Keeps vehicle customization settings intact
  • Displays real-time engine performance data on compatible touchscreens

GM vehicle integration harness

The iDatalink HRN-HRR-GM3 is an installation harness and chime speaker built for select GM vehicles from 2014 and newer. It works with both non-amplified and amplified factory audio systems and requires a Maestro ADS-MRR or ADS-MRR2 module to operate. This combination lets owners replace the factory radio while keeping key vehicle functions.

Capacity and headroom

The harness retains steering wheel controls, factory warning chimes, OnStar with Bluetooth functionality, and the factory backup camera. It also preserves vehicle customization settings and can display real-time engine performance data on compatible touchscreens. The factory amplifier is not retained and must be bypassed during installation, which limits use in systems that require that amplifier to stay active.

Thermals noise and power

As a passive wiring harness and chime speaker, the HRN-HRR-GM3 draws no significant power and generates no measurable heat or noise during normal operation. The ADS-MRR2 module supports a wide range of vehicles from 2006 and newer across multiple brands, but the harness itself is specific to the listed GM applications. No active cooling or additional power supply considerations are needed.

How it compares

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

Price $273.99
Pricier than about 82% of the 3,253 comparable items (median $212.99).

Specifications

Product
Brand nameiDatalink
Product typeHarness

Questions about this item

Will the HRN-HRR-GM3 work with my 2014 GM vehicle's existing steering wheel controls and warning chimes?

Yes, the harness retains steering wheel controls and factory warning chimes when used with the required Maestro ADS-MRR2 module in select GM vehicles from 2014 and newer.

How can I verify the ADS-MRR2 module is functioning correctly after installation?

The module displays real-time engine performance data on compatible touchscreens and maintains OnStar with Bluetooth functionality, confirming proper operation.

Does the box include the Maestro ADS-MRR2 module or must I purchase it separately?

The product includes both the HRN-HRR-GM3 harness and the ADS-MRR2 interface module in one package, so no separate module purchase is needed.

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