While driving: radio will shut off, warning lights come on, fuel gauge goes crazy, car remains running. When you shut car off, it will not restart. Will restart after it sits a while. Sometimes will not start after a while; everything explained above acting the same. Headlights always work though.
Electrical problems on 2001 Buick LeSabre
same issue, replaced PATS moudle, fixed
I had a Dodge do that once. The car acted possesed but it turned out to be the "brain". Your mechanic or dealer can diagnose that easily. You have to take it in if you don't have the diagnostics, ets. Hope that helps.
had same problem with mine turns out it was the ignition switch