Check the listing for details. Add An Amp Amplifier Car Stereo Adapter Interface for some Chevrolet GMC w/Bose. Condition: New. Listed at 46.95 USD. Brand New Add an Amp Audio Output Adapter Product Details:Use this adapter to make your installation of an amplifier to the factory system faster with a cleaner install.Use this plug and play adapter so you don't have to cut or splice into the factory wiring.For adding a bass amp for woofer/subwoofer.Adjustable gain output. Compatibility Notes:Only works with premium systems/Bose that have the factory external amp usually located in the back area of the vehicle. Not compatible with standard systems.Vehicle has to have a factory subwoofer.Connection is done at the factory amplifier. Works with the following vehicles: For vehicles equipped with a factory subwoofer and has a Bose/premium system with the factory external amp. Chevrolet:Colorado 2015-2018 Silverado 1500 2014-2018Silverado 2500/3500 2015-2019 Suburban 2015-2020Tahoe 2015-2020 GMC:Canyon 2015-2018 Sierra 1500 2014-2018 Sierra 2500/3500 2015-2019 Yukon / Yukon XL 2015-2020