PAC – AP4-GM61


Amplifier Integration Interface for Select GM vehicles with Bose systems.

SKU: PAC - AP4-GM61 Category:


Eliminates the GM head unit from the signal path – acts as Digital-to-Analog converter and remote-controlled preamp!


  • Upgrade solution for factory, fixed level, data-bus controlled sound systems
  • Prevents need for summing and audio correction devices
  • Variable volume, fade, balance, bass, mid, and treble audio settings
  • Retains OnStar, Bluetooth, navigation, safety systems, and all warning chimes
  • Front, rear, sub , and center channel preamp outputs (5 volt RMS)
  • Provides full range, flat audio output for a solid audio foundation
  • Customized OE bass, mid, and treble center frequency selection
  • Plug-n-play installation
  • Remote sub level controller INCLUDED
  • TOSLINK optical output INCLUDED


  • AmpPRO module
  • Harness
  • Bass knob
  • Knob harness
  • Manual

Also available: APH-GM02 speaker harness (sold separately)