Axxess GMOS-01 02-Up Onstar Harness Adapter with Chime: $100 if the add is still up its still for sale will remove add when sold email or message me you number to be called back and i do not text pick up only in transcona Provides accessory (12 volt 10 amp) Retains R A P (retained accessory power) Retains chimes Provides NAV outputs (parking brake - reverse - speed sense) Provides accessory power (12-volt 10-amp) Retains R.A.P. (retained accessory power) Provides NAV outputs (parking brake, reverse, speed sense) Pre-wired ASWC-1 harness (ASWC-1 sold separately) Retains chimes to the factory speaker Adjustable chime level Retains OnStar / OE Bluetooth Adjustable OnStar level Designed for non-amplified models, or when bypassing a factory amp * Retains balance and fade USB-CAB updatable (sold separately) *If the vehicle is amplified, either use the GMOS-04 interface, or bypass the amplifier. If bypassing the amplifier, follow the Axxess Interface Amp Bypass Schematic in the documents section.