Hi Louage, I did indeed upgrade from sync 2. I removed my sync 2 gpsm as the ipc compass was doing crazy things too. I removed the a pillar trim and took the module out and while I was there i put the sync 3 gps in the same place and run the fakra lead behind ipc to the sync 3 apim. Was any forscan changes needed for gps? I didn’t make any as I didn’t think it needed it. Thanks