So I was driving home from work at about 80mph and without warning, the car just died. No electronics work(dash, engine, ignition, interior lighting, etc.). I’ve checked grounds, alternator wire, swapped a known good battery out of my truck, made sure ECM was still there, tried jumping the original battery, and unplugged and plugged back in PCM/ECM.

Not too too sure what else to check. Certain things get power like the Hazard lights, cigarette lighter plug, headlights, tailights, and the unlock/lock buttons on my fob work, just don’t actually actuate the locks.

Alternator was rebuilt by a reputable company a month or two ago, and battery is 3 months old and tested good at autozone today.

Any ideas on something else to check?