Radio Replacement Interface with Onstar Retention for Class II General Motors Vehicles
Radio Replacement Interface With OnStar Retention for Select GM Class II Vehicles with or without BOSE Sound System
Year(s) | Make | Model | Trim Level | Additional Info |
---|---|---|---|---|
2005-2007 | BUICK | LACROSSE | ALL TRIM LEVELS | — |
2004-2007 | BUICK | RAINIER | ALL TRIM LEVELS | — |
2003-2007 | BUICK | RENDEZVOUS | ALL TRIM LEVELS | — |
2005-2007 | BUICK | TERRAZA | ALL TRIM LEVELS | — |
2003-2006 | CADILLAC | ESCALADE | ALL TRIM LEVELS | — |
2003-2006 | CADILLAC | ESCALADE ESV | ALL TRIM LEVELS | — |
2003-2006 | CADILLAC | ESCALADE EXT | ALL TRIM LEVELS | — |
2003-2006 | CHEVROLET | AVALANCHE | ALL TRIM LEVELS | — |
2004-2012 | CHEVROLET | COLORADO | ALL TRIM LEVELS | — |
2005-2013 | CHEVROLET | CORVETTE | ALL TRIM LEVELS | — |
2003-2007 | CHEVROLET | EXPRESS VAN | ALL TRIM LEVELS | — |
2000-2005 | CHEVROLET | IMPALA | ALL TRIM LEVELS | — |
2001-2003 | CHEVROLET | MALIBU | ALL TRIM LEVELS | — |
2000-2005 | CHEVROLET | MONTE CARLO | ALL TRIM LEVELS | — |
2003-2004 | CHEVROLET | S-10 PICKUP | ALL TRIM LEVELS | — |
2003-2006 | CHEVROLET | SILVERADO | ALL TRIM LEVELS | — |
2007 | CHEVROLET | SILVERADO | CLASSIC | — |
2003-2006 | CHEVROLET | SSR | ALL TRIM LEVELS | — |
2003-2006 | CHEVROLET | SUBURBAN | ALL TRIM LEVELS | — |
2003-2006 | CHEVROLET | TAHOE | ALL TRIM LEVELS | — |
2002-2009 | CHEVROLET | TRAILBLAZER | ALL TRIM LEVELS | — |
2005-2009 | CHEVROLET | UPLANDER | ALL TRIM LEVELS | — |
2003-2005 | CHEVROLET | VENTURE | ALL TRIM LEVELS | — |
2004-2012 | GMC | CANYON | ALL TRIM LEVELS | — |
2002-2009 | GMC | ENVOY | ALL TRIM LEVELS | — |
2003-2007 | GMC | SAVANA | ALL TRIM LEVELS | — |
2003-2006 | GMC | SIERRA | ALL TRIM LEVELS | — |
2007 | GMC | SIERRA | CLASSIC | — |
2003-2006 | GMC | YUKON | ALL TRIM LEVELS | — |
2003-2006 | GMC | YUKON XL | ALL TRIM LEVELS | — |
2003-2007 | HUMMER | H2 | ALL TRIM LEVELS | — |
2005-2010 | HUMMER | H3 | ALL TRIM LEVELS | — |
2009-2010 | HUMMER | H3T | ALL TRIM LEVELS | — |
2001-2004 | OLDSMOBILE | ALERO | ALL TRIM LEVELS | — |
2002-2004 | OLDSMOBILE | BRAVADA | ALL TRIM LEVELS | — |
2000-2004 | OLDSMOBILE | SILHOUETTE | ALL TRIM LEVELS | — |
2001-2005 | PONTIAC | GRAND AM | ALL TRIM LEVELS | — |
2004-2008 | PONTIAC | GRAND PRIX | ALL TRIM LEVELS | — |
2001-2006 | PONTIAC | MONTANA | ALL TRIM LEVELS | — |
2000-2005 | PONTIAC | SUNFIRE | ALL TRIM LEVELS | — |
2005-2008 | SAAB | 9-7X | ALL TRIM LEVELS | — |
2005-2007 | SATURN | RELAY | ALL TRIM LEVELS | — |

OS-2X
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 3.1.1.6 (Released on July 1st, 2019)DownloadRelease Notes
***No download available, harness update only***
- Changed OS-RADPWRAUDIO to OS-RAD-HAR. Harness includes the following updates:
- Shortened chime cable
- Removed blue power antenna input
- Extended harness length by 2"
- Removed constant 12v and ground connections from relay to module
- Changed OS-RADPWRAUDIO to OS-RAD-HAR. Harness includes the following updates:
- Firmware Download, Version 2.1.1.6 (Released on June 1st, 2019)DownloadRelease Notes
***No download available, harness update only***
- OS-RADPWRAUDIO modification to fix accessory drop out issue
- Firmware Download, Version V6 (Released on November 6th, 2018)DownloadRelease Notes
- Fixes issues seen with accessory output turning off and on randomly
- Firmware Download, Version 1.1.1.5 (Released on January 19th, 2017)DownloadRelease Notes
- Adds support for SWI-CP2
- Adds support for SWI-CP2
- Firmware Download, Version v1.1.3 (Released on April 24th, 2015)DownloadRelease Notes
- Fixes issue with SWC output not working
- Utility/Other, Version 2.6 (Released on July 21st, 2017)DownloadRelease NotesPAC-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 updatable 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 a 24-pin harness
- OS-2X Instruction Manual
- Download (668.13k)
- Loss of Acc 12v+
- If accessory 12v+ drops out at high volume, follow the procedure in this document.
Download (1.14M)