HRN-RR-GM3 MAESTRO RR GM HARNESS

Product highlights:

• 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 and warning chimes
• retains OnStar (with Bluetooth), factory backup cam, vehicle customization options
• displays engine performance data on touchscreen