GM1A-RS

RadioPRO Advanced Radio replacement interface installation Adapter for GM Class II Databus w/o OnStar. Retains chimes, factory amplifier, and steering wheel controls.
RadioPRO Advanced features improved sound quality of warning chimes through a provided speaker and direct USB connection for quick and easy product setting adjustments and firmware updates. It also saves you time installing a streamlined harness design, smaller housing, and easier adjustment of chimes and factory amplifier gain.