PAC GM1A-RS — Serialized*** RadioPRO Advanced Radio installation Adapter for GM Class-2 Vehicles. Retains Chimes Steering wheel
Key features
- RadioPRO Advanced replacement-radio adapter for GM Class II applications
- Retains supported steering-wheel controls and factory amplifier
- Retains compatible audio fade and rear-seat entertainment
- Warning-chime speaker included
- USB connection for firmware updates and setting adjustments
PAC GM1A-RS — Serialized*** RadioPRO Advanced Radio installation Adapter for GM Class-2 Vehicles. Retains Chimes Steering wheel is backordered and will ship as soon as it is back in stock.
Description
Description
The PAC GM1A-RS RadioPRO Advanced interface supports aftermarket radio installation in select GM Class-2 vehicles while retaining compatible factory audio functions.
Retained features
- Steering-wheel audio controls
- Warning chimes through an external speaker
- Standard and premium Bose amplifier operation
- Audio-fade adjustment through the configuration application
- USB connection for supported settings and firmware updates
Check the exact vehicle
Listed applications include 2003–2006 Chevrolet Silverado, Tahoe and Suburban and 2003–2006 GMC Yukon. Fit depends on the vehicle and original equipment, not just the GM badge. Confirm the application and use instructions matching the module revision.

