Provides accessory power (12-volt 10-amp)
Retains R.A.P. (Retained Accessory Power)
Used in non-amplified systems or when replacing amplified systems
Retains chimes
Provides NAV outputs (parking brake, reverse, mute and speed sense)
Retains OnStar®/OE Bluetooth®
Adjustable gain control for chimes and OnStar®
High-level speaker input
Retains balance and fade
Micro-B USB updatable