Park Avenue Analog OnStar
Despite GM'* insistence that their analog OnStar can't be upgraded to digital under any circumstances, I recently discovered that the 2000-2002 Bonneville, Aurora, and LeSabre can be upgraded now. I entered some 2000/1 Aurora and LeSabre VINs on the OnStar website to verify and yes, it'* true!
But not the premium GM sedans like DeVille, Seville, and Park Avenue. And no GMT 900s, GMT 360s, N-bodies, or W-bodies.