Thread: Aftermarket radio Interface adapter for '98 gtp coupe

I have 1998 Grand Prix GTP coupe with the 8 speaker system. I haven't been able to find an adapter that lets me keep my Heads Up Display. Stearing wheel controls, chimes or anything else I lose is not that important to me. Also not using any of the factory stock audio. And I'm wondering, if I'll have issues with the factory security alarm.

Check Crutchfield for the adapters. Pretty sure they have all that stuff.