Radio Wire Harness and Antenna Adapter. Use to add an aftermarket radio to the factory vehicle wiring. Important Compatibility Notes: Will not retain some features that go through the radio like vehicle warning chimes, OnStar, rear DVD, steering audio controls, etc. Very Important- All vehicles required to run a separate 12 volt ignition power wire to the new radio wire harness since that wire is not available on the factory harness. The new radio's red ignition wire needs to be connected separately to the vehicle's ignition wire which might be a cigarette lighter power wire, etc. Not compatible with factory premium stereo system vehicles. Only works with factory standard systems (no Bose, etc.). No 7 inch screen vehicles- measured diagonally. Compatible vehicles: No Bose or premium amp vehicles: Only for 4" and 8" screen radio vehicles- no 7" screen vehicles: Made for Chevrolet: 2015-2018 Colorado (No 7 inch factory radio vehicles), 2016-2017 Malibu (No 7 inch factory radio vehicles), 2014-2018 Silverado 1500 (No 7 inch factory radio vehicles), 2015-2019 Silverado 2500/3500 (No 7 inch factory radio vehicles), 2015-2017 Suburban ,2015-2017 Tahoe; Made for GMC: 2015-2018 Canyon (No 7 inch factory radio vehicles), 2014-2018 Sierra 1500 (No 7 inch factory radio vehicles), 2015-2019 Sierra 2500/3500 (No 7 inch factory radio vehicles) , 2015-2016 Yukon / Yukon XL