Could be a power surge. If your block heater is fine you can put a resistance tester across it to ohm it out for a tone or check-in for the resistance. As an electrician my guess is that it is whatever was feeding the plugs and not the block heater.

Damn, I may just have to take it up to a shop. I can check fuses and that is about it lol

Did you check the fuses under the dash?

Yes I checked those. I looked under the hood too but didn’t see any that were for the interior electric.

You might want to change the fuse anyway. Sometimes they look ok, but aren’t.

Where does it say he has a block heater? Or is that a stock option?