Provides accessory power (12-volt 10-amp) Retains R.A.P. (Retained Accessory Power) Retains OnStar®/OEM Bluetooth® Retains chimes Adjustable volume for OnStar® Provides NAV outputs (parking brake, reverse, mute and speed sense) Retains audio controls on the steering wheel Retains factory satellite radio Can be used in non-amplified or amplified models High level speaker input Retains balance Micro-B USB updatable