Axxess GMOS-04 GMOS-04 Class 2 Data Interface for 2000 and Up GM

Provides accessory (12V 10A)

Retains RAP and chimes

Provides NAV outputs (parking brake/reverse/speed sense)

Retains OnStar(R)/OE Bluetooth(R)

Adjustable OnStar(R) level and chime volume

Designed for amplified models

Retains balance and fade

High-level speaker input

USB updateable

Includes prewired ASWC-1 harness (ASWC-1 sold separately)