Weird stuff here, once my car (1998 Grand Prix 3800, non super) gets
the engine temp over the 180 mark, the ABS light, the Low Trac light
both come on and the power steering fades (almost like the highspeed
variable steer is set to on even at low speed).

No Check Engine light at all.

ABS Does not work. I suppose low trac is failing too but have not
tested.

My thoughts are this is an electrical signal failing somewhere. But
what and where?

Any mechanics out there familiar with the circuitry on these cars that
can lend a hint.

Again, it goes away when shut off and cool and the problem reappears
when over 180 engine temp.