Radio Replacement Interface with Onstar Retention for Class II General Motors Vehicles

$179.95 OS-2X
Radio Replacement Interface With OnStar Retention for Select GM Class II Vehicles with or without BOSE Sound System


Radio Replacement Interface with Onstar Retention for Class II General Motors Vehicles

Installation Instructions

If not updated, download and install the latest version of the PAC-UP firmware. It is VERY important that you use the latest version of Interface Updater. Not doing so may damage the interfaces software. 

Detailed Instructions

  • If this is the first time, run and install "Interface Updater Setup". This will install "Interface Updater" onto the computer. The "Interface Updater" will update the files from the computer to RP Interface.
  • Download the file
  • Connect the PAC-UP to the computer using supplied USB cable. Connect the PAC-UP to the RP Interface.
  • Open the Interface Updater Program by going to Start >All Programs >AAMP of America > Interface Updater.
  • Click "Connect" button to establish connection between the PAC-UP and the computer. The "Connected" check box will be checked if successful. If unsuccessful, reconnect PAC-UP to the computer and restart the software.
  • Select your RP Interface from the "Interface select" pull down menu.
  • Click "Update firmware". The new firmware can be found where you saved it before beginning.
  • Once the files are chosen the update will begin. When successful it will show the text "End Update".

IMPORTANT: It is very important that the second and third digit of the revision number on your module matches the second and third digit of the new firmware file revision number. If your numbers do not match, please contact our tech support department.

  • Firmware Download, Version V6 (Released on November 6th, 2018)
    Release Notes
    • Fixes issues seen with accessory output turning off and on randomly
  • Firmware Download, Version (Released on January 19th, 2017)
    Release Notes
    • Adds support for SWI-CP2

  • Firmware Download, Version v1.1.3 (Released on April 24th, 2015)
    Release Notes
    • Fixes issue with SWC output not working
  • Utility/Other, Version 2.6 (Released on July 21st, 2017)
    Release Notes
    PAC-UP Interface Updater

Retains the function of OnStar® when the factory radio is replaced. Generates all safety warning chimes.

  • Rear Seat Entertainment activation
  • Plug-in-connection for steering wheel control module (SWI-CP2, SWI-RC or SWI-RC-1)
  • In-field updateable firmware via USB
  • Chime Module Included, with 4 level adjustability
  • Retains OnStar® when the factory radio is replaced
  • Retains Bose amplified audio system (if equipped)
  • Provides 10 Amp 12-volt accessory output
  • Retains all safety warning chimes
  • Navigation radio ready
  • Maintains a “healthy” status on the Class II data bus
  • Retains Rear Seat Radio Controls
  • Retains Rear Seat Audio (connects to aftermarket radio AUX input)
  • Plug-in installation for vehicles with 24-pin harness

Product Revision History

Current Revision #: Description: Fixes issues seen with accessory output turning off and on randomly Release Date: 11/6/18

Revision #: Description: Adds support for SWI-CP2 Release Date: 1/19/17

Revision #: 1.1.3 Description: Fixes issues with SWC output not working Release Date: 4/24/15

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