IDATALINK HRN-RR-GM4 +ADS-MRR MAESTRO GM4 / GM VEHICLES HARNESS W/CHIME FOR · 16:9 aspect ratio

· 16:9 aspect ratio

GM Data Interface 2014-Up

B (7 times) - starts flashing on and off slow then speeds up

· Mounting bracket

Before installing you must program the adapter at the iDatalink site to work with your particular vehicle

IDATALINK HRN-RR-GM4 +ADS-MRR MAESTRO GM4 / GM VEHICLES HARNESS W/CHIME FOR · 16:9 aspect ratioIDATALINK HRN RR GM4 Keep your GM factory features iDatalink's HRN RR GM4 wiring adapter allows you to connect an iDatalink ready car stereo in select 2016 up Chevrolet and GMC trucks with 7" screens, working in conjunction with iDatalink's Maestro ADS MRR module. Once connected, you'll retain the use of your steering wheel audio controls in these vehicles, as well as your warning chimes and backup camera. You'll still retain OnStar service and