Metra Metra GM Data Bus Interface 2000-2005

* Provides accessory power (12-volt 10-amp) * Retains R.A.P. (retained accessory power) * Provides NAV outputs (parking brake, reverse, and speed sense) * Used in non-amplified models, or when bypassing a factory amplifier * Used in models without OnStar * Retains all warning chimes * High level speaker input * Retains balance and fade * Micro-B USB updatable