• Retains Onstar w/adjustable volume output
  • Retains chime
  • Retains RAP feature
  • USB update interface compatible

The GMOS-12 interface is designed to allow the user to replace the OEM radio with an aftermarket unit in 2004-2005 Saturn vehicles and retain full functionality of the OnStar system as well as all safety and warning chimes. The GMOS-12 will also retain the retained accessory power convenience features. This interface also has the capability of adjusting the OnStar volume.